压力开关规格书
QYK-02B(211NC)双接口单极常闭压力开关
开关电压：0～250V AC/DC 5.1-15Kpa ±0.5Kpa 开关电流：0～0.5A 15.1-25Kpa ±1Kpa 绝缘电阻:50MΩ/DC,历时2s 25.1-80Kpa ±1Kpa 电气强度:1250V/AC,历时2s 适用压力性质：正压（吹气）或（真空）负压（吸气） 开关开启压力：1～100Kpa（任选设定点)压力可微调 开关关闭压力：小于设定开启压力立即断开（无压差） 适用系统压力：0～0.2Mpa 最高破裂压力：0.5Mpa(5bar) 适用介质:水、气、油或类似非有害物质介质 电气功能: 单极常开（SPST-NO）或单极常闭（SPST-NC）
双接口单极常闭式压力开关
重量
比例
QYK-02B(211NC)
电气控制原理图
审核 工艺
S
A 共
B 页 第
2:1
QYK-02B(211NC)
页
PCB安装孔图 请制作调试孔 调试孔
1Kpa=1000pa=100mmH2O=7.5mmHg=10mbar 1Psi=7Kpa 100Kpa=1kgf/cm2=1bar 1bar=100Kpa=0.1Mpa 1inHg=3.4Kpa
C 常闭
NC SPST-NC 正压 负压
产品技术规格书
标记 处数 更改文件号 签字 日期 设计 陈云志 标准化 审定 校对 王 洪 批准 徐志鸿 丁 海 日期 2008/03/02 图样标记
压力范围 动作误差 100-500pa ±30pa 500-1000pa ±100pa ±0.3Kpa
借通用件登记 描 写
描
校
旧底图总号
Hale Waihona Puke 底图总号 签 日 期 字QYK-02B(211NC)
压力开关规格书
工艺管 道材质
PIPE MAT'L
ITEM TAG No.
设定值 Setpoint 高 High 低 Low
℃
Mpa(G)
说明 NOTES：
编制
STRUMENT SPECIFICATION (PRESSURE SWITCH)
1 仪表名称 Instrument Name 类型 Type 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 型号 Model 测量元件类型 Senser Type 测量元件材质 Sensor Mat'l 设定值可调范围 Adjustable Set Point Range 精度 Accuracy 适用环境温度 Ambient Temperature 开关数量 Switch Quantity 开关触点形式 Switch Contact Form 触点容量 Contact Rating 负载 Load 电气连接 Elec. Conn. 过程连接形式 Process Conn. 连接规格 Size 法兰标准 Flange STR. 等级 Rating 法兰材质 Flange Mat'l 密封面形式 Facing 不灵敏区 Deadband 防护等级 Enclosure Protection 防爆等级 Explosion Proof 转换接头 Coverter Conn. 安装支架 Mounting Bracket
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压力开关 Pressure Switch
推荐制造商 Manufacturer
压力开关说明7页
操作手册压力继电器（压力开关）YSJ-340系列一、概述YSJ-340系列压力继电器是一种超小型压力控制仪表，用于液压、气动系统的压力显示与控制，可替代德国贺德克HYDAC(贺德克)EDS300系列压力继电器。
该仪表采用了高精度压力传感器，电路部分以高性能单片机微处理器为核心，具有3位LED数字显示及轻触开关输入的人机界面、具有开关量（报警）输出及4～20mA模拟输出，是在机械继电器无法胜任的条件（如压力剧烈波动、强环境振动、高精度高速度控制、小体积等）下可靠工作的理想选择。
二、性能指标◇测量范围：0～1.6—0～60MPa◇电源电压：16～36VDC◇输出信号：（RL≤250Ω）◇接口螺纹：G1/4◇环境条件：环境温度：-20℃～60℃介质温度：:-20℃～80℃存储温度:-40℃～125℃相对湿度：0～80%耐冲击：≤50g/ms耐振动：≤10g/（0～500HZ）◇输出信号精度：1.0◇过载压力：1.5%倍满量程压力◇最大功耗：≤3W触点容量：24VDC/1.2A（MAX）三、功能根据不同型号，装置可提供下列功能◇三位显示当前压力（正常工作）◇按压力、预设开关点输出开关量◇输出模拟量◇基本设定菜单◇提供四种不同输出模式：◇YSJ341带1路开关量输出（负载最大电流1.2A，无模拟量输出）◇YSJ342带2路开关量输出（负载最大电流1.2A，无模拟量输出）◇YSJ343带1路开关量输出（负载最大电流1.2A）和1路模拟量输出（4～20mA）◇YSJ344带2路开关量输出（负载最大电流1.2A）和1路模拟量输出（4～20mA）四、安装YSJ340可以通过压力管接头（DIN3852内螺纹G1/4），直接装在液压集成快上。
电气连接必须由国家认定合格的电工操作（参考中国电工国家标准规范）。
压力继电器的外壳必须同时良好的接地。
如安装在液压块里，块体通过液压系统接地时有保证的。
若用微型软管安装，客体必须单独接地。
高精度数字压力开关 56-ISE70 56-ISE75(H) 系列说明书
Instruction Manual56-ISE70 / 56-ISE75(H) series56-ISE70II 3G Ex ec IIC T5 Gc 0°C≤Ta≤+50°CII 3D Ex tc IIIC T53°C Dc IP6756-ISE75(H)II 3G Ex ec IIC T4 Gc -5°C≤Ta≤+50°C II 3D Ex tc IIIC T54°C Dc IP67 56-ISE70-#-65-#-X508II 3G Ex ec IIC T4 Gc 0°C≤Ta≤+50°C II 3D Ex tc IIIC T58°C Dc IP67The intended use of the pressure switch is to measure the pressure of fluid and to provide an output signal.These safety instructions are intended to prevent hazardous situations and/or equipment damage. These instructions indicate the level of potential hazard with the labels of “Caution,” “Warning” or “Danger.”They are all important notes for safety and must be followed in addition to International Standards (ISO/IEC) *1), and other safety regulations. *1)ISO 4414: Pneumatic fluid power - General rules relating to systems. ISO 4413: Hydraulic fluid power - General rules relating to systems.IEC 60204-1: Safety of machinery - Electrical equipment of machines. (Part 1: General requirements)ISO 10218-1: Manipulating industrial robots -Safety. etc.• Refer to product catalogue, Operation Manual and HandlingPrecautions for SMC Products for additional information. • Keep this manual in a safe place for future reference.CautionCaution indicates a hazard with a low level of risk which, ifnot avoided, could result in minor or moderate injury.WarningWarning indicates a hazard with a medium level of riskwhich, if not avoided, could result in death or serious injury.DangerDanger indicates a hazard with a high level of risk which, ifnot avoided, will result in death or serious injury.Warning• Always ensure compliance with relevant safety laws and standards.• All work must be carried out in a safe manner by a qualified person in compliance with applicable national regulations.• This product is class A equipment intended for use in an industrial environment. There may be potential difficulties in ensuring electromagnetic compatibility in other environments due to conducted or radiated disturbances.• Refer to the operation manual on the SMC website (URL: https:// ) for more information regarding safety instructions.1.1 Ex Safety Instruction Ex Marking DescriptionII 3G Ex ec IIC T5 Gc 0°C≤Ta≤+50°C II 3D Ex tc IIIC T53°C Dc IP67Equipment Group II Category 3Gas (G) and Dust (D) environmentEx - European standards apply ec - Increased safety IIC - For all types of GasT5 - Temperature classificationtc - Protected by enclosure IIIC - For all types of dust T53°C - Max. surface temp. Gc/Dc - EPLTa - ambient temperature IP67 - Degree of protectionBased on the conformity assessment carried out by SMC Corporation.Certificate Number:SMC 20.0029 XIf the Certificate number includes an X, special conditions for safe use apply as follows :-• Protect the product from sources of heat which can generate surface temperatures greater than the temperature classification.• Protect the product and cable against all impact or mechanical damage. • Protect the product from direct sunlight or UV light using a suitable protective cover.• Do not disconnect the M12 connector before first switching OFF the power supply.• Use only a damp cloth to clean the product to avoid an electrostatic charge.• Provide suitable grounding to avoid electrostatic charge.2 Names of Individual parts3 Specifications4 Installation4.1 InstallationWarning• Do not install the product unless the safety instructions have been read and understood.• Do not disassemble, modify (including changing the printed circuit board) or repair. An injury or failure can result.• Do not operate the product outside of the specifications. Do not use for flammable or harmful fluids.Fire, malfunction or damage to the product can result.• If using the product in an interlocking circuit: Provide a double interlocking system, for example a mechanical system. 4.2 EnvironmentWarning• Do not use in an environment where corrosive gases, chemicals, salt water or steam are present.• Do not install in a location subject to vibration or impact in excess of the product’s specifications.• Do not mount in a location exposed to radiant heat that would result in temperatures in excess of the product specification.4.3 Mounting with BracketMount the product using bracket (ZS-31-A) around the fitting, then set the product in the required position using M6 screws.If the panel is less than 5 mm thick, use M6 nuts to reinforce the mounting.4.4 PipingCaution• Before connecting piping make sure to clean up chips, cutting oil, dust etc.• When piping, tighten to the recommended torque:13.6 to 15 N•m for ISE70 series and 25 to 28 N•m for ISE75/75H series4.5 Wiring• Connections should be made with the power supply turned off.• Use a separate route for the product wiring and any power or high voltage wiring. Otherwise, malfunction may result due to noise.• If a commercially available switching power supply is used, be sure to ground the frame ground (FG) terminal. If the switching power supply is connected, switching noise will be superimposed and it will not be able to meet the product specifications. In that case, insert a noise filter such as a line noise filter/ferrite between the switching power supplies or change the switching power supply to the series power supply. • Connector mounting / removalAlign the cable connector key groove with the product connector key to insert and rotate the knurled part of the connector. M12 Connector Pin layout 56-ISE70/75(H)-##-43 No. Colour Function 1 Brown DC (+) 2 White OUT2 (PNP) 3 Blue DC (-) 4 Black OUT1 (NPN) 56-ISE70/75(H)-##-65 No. Colour Function 1 Brown DC (+) 2 White N.C. 3 Blue DC (-) 4 Black OUT1 (PNP) 56-ISE70/75(H)-##-27 / -67No. ColourFunction 1 Brown DC (+) 2 White OUT2 (NPN or PNP)3 BlueDC (-) 4 Black OUT1 (NPN or PNP)56-ISE70/75(H)-##-65-X508No. ColourFunction 1 Brown DC (+) 2 White OUT2 (4 to 20mA)3 BlueDC (-) 4 Black OUT1 (PNP)Power is supplied▼Measurement modeDetects pressure, displays values and performs switching. Other functions such as zero clear can also be set if necessary.▼ Initial settingSetting the output mode, LCD display colour, and response time.▼Pressure SettingInput of set value for pressure to perform switch output.▼Measurement mode5.1 Initial SettingPress and hold the SET button for 2 seconds or longer.The display shown right will appear to allow operating the initial setting mode.Finish initialization and return to measurement mode byno operation for 30 seconds or pressing the SET button for 2 seconds or longer.6 Pressure Setting• Pressure input mode for OUT1Press the SET button in measurement mode to display set values. [P_1] or [n_1] and the current set value will flash in turn. Press the SET button to display the next set value (Hysteresis: H_1). Press the UP or DOWN button to enter the value change mode.• When hysteresis mode is setIf the hysteresis mode is set, [H_1] and the set value of hysteresis will appear in turn after the setting for [P_1] or [n_1]. Press the SET button to return to normal measurement mode. Press the UP or DOWN button to enter the value change mode.If the hysteresis is set to 2 digits or less, the switch output may chatter if input pressure fluctuates near the set value.• When window comparator mode is setIf the Window comparator mode is set, [P_2] or [n_2] and the current set value will appear in turn after the setting for [P_1] or [n_1]. Press the SET button to display the next set value. (Hysteresis: H_1)Press the UP or DOWN button to enter the value change mode.Next, [H_1] and the set value of Hysteresis will appear in turn. Press the SET button to return to measurement mode. Press the UP or DOWN button to enter the value change mode.If the initialized value is normally open mode, [P_1] will appear, and [n_1] will appear if it is normally closed mode. The set pressure can be checked without holding or stopping switch output operation.7 Other Settings• Fine adjustment mode• Peak / Bottom value display • Key lock function • Zero Clear function .Refer to the operation manual on the SMC website (URL: https:// ) for further details of how to set these and other functions.8 Maintenance8.1 General MaintenanceCaution• Not following proper maintenance procedures could cause the product to malfunction and lead to equipment damage.• If handled improperly, compressed air can be dangerous.• Maintenance of pneumatic systems should be performed only by qualified personnel.• Before performing maintenance, turn off the power supply and be sure to cut off the supply pressure. Confirm that the air is released to atmosphere.• After installation and maintenance, apply operating pressure and power to the equipment and perform appropriate functional and leakage tests to make sure the equipment is installed correctly.• If any electrical connections are disturbed during maintenance, ensure they are reconnected correctly and safety checks are carried out as required to ensure continued compliance with applicable national regulations. How to reset the product after power cut or forcible de-energizing The setting of the product will be retained as it was before a power cut or de-energizing. The output condition is also basically recovered to that before a power cut or de-energizing, but may change depending on the operating environment.Therefore, check the safety of the whole installation before operating the product. If the installation is using accurate control, wait until the product has warmed up (approximately 20 to 30 minutes).9.1 Error Indication10 Limitations of Use10.1 Limited warranty and Disclaimer/Compliance Requirements Refer to Handling Precautions for SMC Products.11 Product DisposalThis product shall not be disposed of as municipal waste. Check your local regulations and guidelines to dispose of this product correctly, in order to reduce the impact on human health and the environment.12 ContactsRefer to or www.smc.eu for your local distributor / importer.URL : https:// (Global) https://www.smc.eu (Europe) SMC Corporation, Akihabara UDX15F, 4-14-1, Sotokanda, Chiyoda-ku, Tokyo 101 0021 Specifications are subject to change without prior notice from the manufacturer. © 2021-2022 SMC Corporation All Rights Reserved. Template DKP50047-F-085LError Error displayed Description Measures Overcurrent OUT1The load current applied to the switch output has exceeded 80 mA.Turn the power off and remove the cause of the over current. Then turn the power on. OvercurrentOUT2ResidualpressureerrorDuring zero clear operation, pressure over ±7%F.S. is applied. After 3 s, the mode will reset to the measurement mode. ±1 digit of the zeroclear range varies with individual product differences. Perform zero clear operation again after restoring the applied pressure to an atmospheric pressure condition.Pressure errorPressure has exceeded the upper limit of the set pressure range. Reset applied pressure to a levelwithin the set pressure range. Pressure has exceeded the lower limit of the set pressure range. SystemerrorDisplayed if an internal data error has occurred. Turn the power offand on again. If the failure cannot be solved, contact SMC. If the error cannot be reset after the above measures are taken, or errors other than the above are displayed, please contact SMC.。
消防用压力开关技术规格书
消防用压力开关技术规格书一、总则：1.本技术规格书适用于消防用压力开关的供货、安装、调试与相应的服务；2.本技术规格书与设计文件及总承包合同有矛盾时，按照较高标准执行；3.本产品需采用先进的制造工艺和标准，确该产品预期寿命不小于20年；4.有关设备，无论在运送、储存及安装期间应采取正确的保护设施，以确保设备在任何情况下不受破损及锈蚀；5.投标人应对本技术需求书中所列明的各项功能、性能和使用要求作出明确的响应，所有指标不允许有负偏离；6.如投标产品的功能或技术性能指标优于本技术需求书所提出的要求，则应在投标文件中作出明确说明，以便在评标价相等或相当的情况下作出对投标人有利的评估；7.本技术需求书提出的是最低限度的要求，并未对一切细节作出规定，也未充分引述有关标准和规范的条文。
投标人应保证提供符合本技术需求书和有关最新标准的产品，保证工程安装质量符合设计要求及本技术需求书要求和最新适用的国家规范和标准。
二、压力开关的设置位置1.在给水系统中的压力开关是用作启动/停止供水泵之用。
开关的运转范围和差幅应满足系统的控制要求；2.消火栓水泵可自动启动（由消防水泵出水干管上设置的压力开关、高位消防水箱出水管上的流量开关直接启动消防水泵），并同时将火警讯号送至消防控制室；3.临时高压系统的自动喷水灭火系统的开启由湿式报警阀的压力开关控制，其将信号接至消防控制中心并报警；三、压力开关的技术规格参数要求1.外观要求（1）压力开关表面不应有明显的锈蚀、涂层剥落、起泡、毛刺、结构松动等缺陷。
（2）压力开关上标示的文字符号和标志清晰、正确，标志内容应符合10.1.1要求。
2.额定工作压力压力开关的额定工作压力应不低于1.2 MPa.3.动作压力（1）普通型压力开关的动作压力为0.035 MPa-0.05 MPa.6.3.2 预作用装置压力开关动作压力为0.03 MPa~0.05 MPa.（2）特殊型系统压力开关的动作压力范围由厂家确定。
50dCE-50D.2-03压力开关规格书
第 1 页共 3 页 Page 1 of 3
6 5 4 3 2 1
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说 明 Description
编 制 PREP'D
校 对 CHK'D
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日期 DATE
格式编号：50D.2-03-2004
洛阳石油化工工程公司 中国石化集团 LUOYANG PETROCHE-
顾客要求clients仪表名称instrumentname类型type型号model测量元件类型sensertype测量元件材质sensormatl精度accuracy适用环境温度ambienttemperature开关数量switchquantity开关触点形式switchcontactform触点容量contactrating负载load电气连接elec
压力开关规格书
PRESSURE SWITCH SPECIFICATION 顾客要求 Client's 设计阶段 Phase
项目文件号 Proj.Doc.No.
专业文件号 Discipline Doc.No.
Rev.
LUOYANG PETROCHE洛阳石油化工工程公司 中国石化集团 工厂(公司)名称 Client： 项目名称 Project： 装置及(或)单元名称 Unit： LUOYANG PETROCHE洛阳石油化工工程公司 中国石化集团
压力开关规格书
16 防护等级 Enclosure Protection
17 防爆等级 Explosion Proof
18 转换接头 Coverter Conn.
19 安装支架 Mounting Bracket
Miscell Accessories
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21 22 推荐制造商 Manufacturer
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25 序号 位号
检测位置
介质
操作温度 操作压力 工艺管
设定值
ITEM TAG No. No.
SEVICE
FLUID
OPER. TEMP OPER. PRESS 道材质
Setpoint
℃
Mpa(G) PIPE MAT'L 高 High 低 Low
附件
其他
说明 NOTES：
编制
校对
审核
日期
3 测量元件类型 Senser Type
4 测量元件材质 Sensor Mat'l
5 设定值可调范围 Adjustable Set Point Range
6 精度 AccБайду номын сангаасracy
7 适用环境温度 Ambient Temperature
8 开关数量 Switch Quantity
9 开关触点形式 Switch Contact Form
压力开关 Pressure Switch
仪表规格书（压力开关） INSTRUMENT SPECIFICATION
(PRESSURE SWITCH)
1 仪表名称 Instrument Name 类型 Type
档案号PROJECT No: 设计阶段 STAGE: 页数PAGE:
压力开关规格书
1 仪表名称 Instrument Name 类型 Type 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 型号 Model 测量元件类型 Senser Type 测量元件材质 Sensor Mat'l 设定值可调范围 Adjustable Set Point Range 精度 Accuracy 适用环境温度 Ambient Temperature 开关数量 Switch Quantity 开关触点形式 Switch Contact Form 触点容量 Contact Rating 负载 Load 电气连接 Elec. Conn. 过程连接形式 Process Conn. 连接规格 Size 法兰标准 Flange STR. 等级 Rating 法兰材质 Flange Mat'l 密封面形式 Facing 不灵敏区 Deadband 防护等级 Enclosure Protection 防爆等级 Explosion Proof 转换接头 Coverter Conn. 安装支架 Mounting Bracket
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附件 Accessories 其他 Miscell
压力开关 Pressure Switch
推荐制造商 Manufacturer
序号 No.
位号
检测位置 SEVICE
介质 FLUID
操作温度 操作压力
OPER. TEMP OPER. PRESS
工艺管 道材质
SS-1 压力开关产品说明书
Phone (504) 340-0055Fax(504) 340-0056SS-1 Pressure SwitchModel 4102Model 4102ItemQty.Qty DescriptionMaterial1Spring Spring Ca p 316L or ASTM-A-351 S.S.2A 1Spring (Blue)ASTM-4012B —Spring (Red)ASTM-4012C —Spring (Silver)ASTM-4012D —Spring (Gr een) optional Inconel X-7502E —Spring (Y ellow) ello (Y optional Inconel X-7502F —Spring (Purple) optional Inconel X-750Body For SS-1CF-8M St.Stl.Parts T ube T Acetate Butyrate Lock Ring AISI 316 St.Stl.Panel Mnt.Ring (Optional)AISI 316 St.Stl.Spring Plate AISI 316 St.Stl.8*4Spool O-ring Viton Spool For SS-117-4 PH St.Stl.10*2Shuttle Seal Viton 111Shuttle AISI 316 St.Stl.12*1Spool O-ring Viton 13*2Spool Sleeve Seal Viton 141Spool Spool Sleeve AISI 316 St.Stl.151 1.25”/.50” Piston AISI 316 St.Stl.16*1 1.25” Piston O-ring Viton 171 1.25”/.50”/.25” Base AISI 316 St.Stl.18*1.50” Piston O-ring Viton 191.25” Piston (Optional)AISI 316 St.Stl.20*1.25” Piston Backup eflon eflo T 21*1.25” Piston O-ring Viton 22—Repair Kit * Items Parts T ube ube T Not Supplied With Switches Using 3.0” or .187” Sensor Base.Parts List For Pressure Switch Model SS-11314151617191Repair GENERAL DESCRIPTION: The Ruelco ‘SS-1’ pneumatic pressure switch is a three way block and bleed valve that is operated by pressure acting on a piston opposing an adjustable spring force. It functions as either a normally closed or normally open valve, depending on through which of the two ports the instrument pressure is supplied. These ports are marked as ‘HI IN’ or ‘LO IN’ on the switch body. The output port, marked ‘OUT’ on the switch body, is the same for either mode of operation. Pressure applied to the sense port will cause the valve to operate. The Ruelco ‘SS-1’ pneumatic pressure switch can also be used as a two way bleed only valve in which case one of the ‘HI IN’ or ‘LO IN’ ports is plugged depending on whether the valve is to be used as a high or a low pilot.SS-1Pneumatic Pressure SwitchFEATURES• 316 stainless steel construction (models to N.A.C.E. MR0175 available).• Standard base range 10-10,000 p.s.i. (with 1/4" piston option).• Operating pressure range from .5 to 20,000 psi.• Block-and-bleed 3-way valve.• Holds constant and accurate set points.• Designed for 1% plus or minus repeatability on set points.• Minimum deadband between trip and reset pressure.• Spring may be replaced with instrument and sensing pressure present inthe sensor.• Vent above sensing piston prevents high pressure from entering instru-ment supply should a piston seal leak develop.• Optional tamper proof lock-out device available upon request.Valv V e T ypeT 3 or 2 Way Way Wa Set Point Deviation+1%Deadband 3 Way Way Wa 3% of Range 2 Way y Way Wa 5% of Range Range Max.Instr.Instr Press. 3 Way Way Wa 60 PSI 2 Wa y WayWa 150 PSI Cv Factor Factor Factor 0.160Ambient T emp em T .-20 to 250 deg.F Range -29 to 122 deg.CSwitch SpecificationsSensor T ype T PistonMax.P Oper.Oper ress.10,000 PSI (690 BAR)Burst Pressure 20,000 PSI (1380 BAR)emperatur em T e -20 to 250 Deg.F Range-29 to 122 Deg.C.25”/.50”/.25” 1.25”/.50”/.25” Switch Sensor Specifications * For Switch and 1.25/.50/.25 Sensor Base.A 2.12 (53.8)B (Max) 6.13 (155.7)C 1.32 (33.5)D 1.43 (36.3)E 1.22 (31.0)F 1.82 (46.2)G 1.23 (31.2)H 2.0 (50.8)(50.8)I 1/2” MNPT J1/4” MNPT Panel Mount Hole 1.875 (48.0)Valv V e Ports 1/4” FNPT Weight*Weig W 4.9 lbs.(2.3Kg)Dimensions Inch (MM)ITEM .QTY DESCRIPTION TERIAL TE M A 231Upper Housing 17-4 P .H.P St.Stl.241Piston Assembly17-4 P .H.P St.Stl.251SealViton 26Lower Housing 17-4 P .H.P St.Stl.27—Rep.Kit F/ 3.0” BaseItems 8,10,12,13,253.0" Sensor Base1LWhile this information is presented in good faith and believed to be accurate, Ruelco, Inc. does not guarantee satisfactory results from reliance upon such information. Nothing contained herein is to be construedas a warranty or guarantee, expressed or implied, regarding the performance, merchantability, and fitness with respect to the products. Ruelco, Inc. reserves the right, without notice, to alter or improve the designs or specifications of the products described herein.Ordering Code:4102 X X X X X X X X X 0 X 0 0 0 0BASE MODEL NUMBER Standard Corrosive Service - (-)N.A.C.E.Option - NSPRING CODE (see range chart)PISTON STON PIST CODE (see range chart)ITEM TY .QTY DESCRIPTION TERIAL TE M A 281Retainer Sleeve AISI 316 St.Stl.291.187” Sensor Base 17-4 P .H.P St.Stl.301.187” Piston 17-4 P .H.P St.Stl.311Back -Up RingGlass Filled T efloneflo T 321SealViton3319/16” Gland Nut AISI 316 St.Stl.3419/16” Gland Collar AISI 316 St.Stl.35—Rep.Kit F/ .187” BaseItems 8,10,12,13,31,32.187" Sensor BaseK 2.0 IN.(50.8 MM)L 3.75 IN.(95.2 MM)M 1/2” FNPT Weight*Weig W 8.5 lbs.(3.7 Kg.)* For Switch and 3.0” Sensor BaseSensor T ype T PistonMax.P Oper.Oper ress.20,000 PSI (1380 BAR)Burst Pressure 40,000 PSI (2760 BAR)emperatur em T e -20 to 250 Deg.F Range-29 to 122 Deg.C Sensor T ype T PistonMax.P Oper.Oper ress.5,000 PSI (345 BAR)Burst Pressure 10,000 PSI (690 BAR)emperatur em T e -20 to 250 Deg.F Range-29 to 122 Deg.C N 2.0 IN.(50.8 MM)P 2.57 IN.(65.3 MM)Q 9/16/ M/P Autoclave Weight*Weig W 5.0 lbs.(2.3 Kg.)* For Switch and .187” Sensor BaseSpring Codes (COLOR)ST AN DARD INCONEL SPRING SPRING B (Blue)G (Green)R (Red)Y (Y ello (Y w)S (Silver)P (Purple)Piston Diameter Piston CodeAvailab Avai A le Ranges - PSI (BAR)XXXXXXXXXXXXXXX3.0" 3.0" 3.0" 1.25"1.25"1.25".50".50".50".25".25".25".187".187".187"24.5-20(.03-1.4)4-40(.3-2.75)10-80(.7-5.5)10-115(.7-7.9)20-230(1.4 - 15.8)50-450(3.4 -31)200-750(13.8-51.8)500-1500(34.5-103.5)1000-3000(69-207)1000-3000(69-207)2000-5000(138-345)5000-10000(345-689)2000-5000(138-345)3500-9000(241-620)8500-20000(586-1380)1112233344OPTIONAL BASEOPTIONAL PISTONOPTIONAL BASESS SeriesPressure Switches SS-1 High Flow SS-2 Standard SS-2 High Flow(Pneumatic or Hydraulic)SS-1 Differential SS-2 Differential SS-4 Hydraulic BleedSS-E Electric SS-E Electric DifferentialSS-1 With Optional ScaleModel 4103SS-1 With Optional Scale Model 4103。
海尔-15A SPDT 银接触器压力开关规格说明书
5 to 30 psig
REPEATABILITY ±1.2 inHg ±0.15 psig
±1.0 psig
±5.0 psig
PROOF PRESSURE 29.9 inHg Vac 600 psig
600 psig
600 psig
PSW-584
100 to 500 psig
Enclosure: Switch actuator and bracket steel: irridite finish; adjusting cap and body: zinc alloy chromate finish; switch shield: Mylar®
Pressure Port: 1⁄4 MNPT
30 to 120 psig
±20 psig
600 psig
Comes complete with operator’s manual.
Ordering Examples: PSW-582, economical OEM pressure switch with adjustable range of 3 to 40 psig and 600 psig proof pressure.
To Order
MODEL NO. ADJUSTABLE RANGE
PSW-581
PSW-582
6 to 28 inHg Vac 1.5 to 3.5 psig
3 to 40 psig
PSW-583
30 to 150 psig
DEADBAND 3 to 14 inHg 0.5 to 1.7 psig
Electrical Connection: Screw terminals
1620型单双压力开关规格-安装与使用说明公告书E-51说明书
Series 1620 – Single and Dual Pressure SwitchesSpecifications - Installation and Operating InstructionsBulletin E-51 INSTALLATIONspecified when ordering.are provided.OPERATIONother.2. Pressure Connections – Twoappropriate connections as follows:pressure port and from lower source to low pressure port.B. Positive Pressure (above atmospheric) – Connect tubing from pressure source to high pressure port. Leave low pressure port vented to atmosphere.C. Negative Pressure (vacuum) – Connect tubing from vacuum source to low pressure port. Leave high pressure port vented to atmosphere.Note: When installing switch per paragraphs B or C in dusty environments, we recommend use of optional A-331 filter vent plug in the unused port. This will keep excess dirt from collecting inside switch.3. Electrical Connections – Make wire connections for normally open or normally closed operation to appropriate screw terminals on snap switch.ADJUSTMENT1. If switch has been furnished pre-set, mount it vertically or horizontally as specified. Shifting the position of the switch will alter the set point. Because the set-point may shift in transit it should be checked before placing it in service.2. The effective area of either side of the power diaphragm is changed by the effect of the sealing diaphragm. Thus, the actuating differential pressure setting must be made with the total pressure for the service intended imposed on both sides of the diaphragm. For example, a switch set to close a circuit at a differential pressure increase to 1˝ of water with a total pressure of 1 PSIG will vary from the 1˝ of water setting if the total pressure is increased to 2 PSIG. Also, a two or three percent variation will be noted if a switch set for vacuum or below atmospheric pressure is used for pressure or above atmospheric pressure control.3. To establish the set-point, use a manometer or pressure gage in an appropriate range and of known accuracy. Apply pressureslowly to allow equalization in all branches of the system. Keep tubing lengths as short as possible.4. Model 1626 – The set-point is changed by turning the adjusting nut clockwise to increase and counter-clockwise to decrease. Model 1627 – The set-point of snap switch No. 2 is established first using the adjusting nut as with the 1626 series. Next, set snap switch No. 1 by turning the adjusting screw under the switch roller. Recheck switch No. 2 and correct as necessary. If switch No. 2 needs re-adjustment a final check of switch No. 1 should be made. The settings of the two switches affect one another and both should be checked any time either is changed. MAINTENANCENo unusual precautions are required. Care should be taken to keep the switch reasonably dry and free from dust or dirt. No lubrication required.CAUTION: For use with air or compatible gases only.Series 1620 Pressure Switch ®SERIES 1620 – DIMENSIONSOPTIONAL ENCLOSURESWeatherproof HousingNote: Pressure and electrical connections must face down when mounted.Explosion-proof HousingClass I, Groups C & D; Class II, Groups E, F & G; Class IIIWarning: To reduce the risk of ignition of the hazardous atmosphere, conduit seals must be installed within 18˝ of this enclosure.Disconnect enclosure from supply circuit before opening. Keep assembly tight during operation.©Copyright 2015 Dwyer Instruments, Inc.Printed in U.S.A. 10/15FR# 440199-00 Rev. 6Ø7/16 (11.11) MOUNTING (209.55)6。
Series H3 差分压力开关规格与使用说明书
Series H3 Differential Pressure SwitchesSpecifications - Installation and Operating InstructionsBulletin E-78Series H3 Differential Pressure Switches actuate one or two single pole, double throw (SPDT) snap switches in response to increasing or decreasing pressure of compatible gases or liquids. Four field adjustable operating ranges are available allowing set-points up to 200 psid. All models are suitable for hazardous locations and also include weatherproof housings as detailed in the chart below. Read and understand instructions completely before proceeding with installation or operation. MODEL NUMBER DEFINITIONSH3 _____ - _____ _____ _____ - _____Wetted MaterialsA - Aluminum/NitrileS - 316 SS/FluoroelastomerOperating Range1 - 10 to 180 in. w.c. (2.48 to 44.78 kPa)2 - 0.5 to 15 psid (0.03 to 1 bar)3 - 5 to 70 psid (0.34 to 4.8 bar)4 - 10 to 200 psid (0.7 to 13.8 bar)CircuitS - SPDTD - DPDTElectrical ConnectionsC - Terminal block(s) ATEX Compliant ConstructionT - Terminal block(s) UL and CSA approvedL - Wire leadsOptionsMV - Gold contactsDRAIN - Drain/BreatherVIT - Fluoroelastomer diaphragm/O-ring option where not standard.Attention: Units without the “C” suffix are not Directive 2014/34/EU (ATEX) compliant.These units are not intended for use in potentially hazardous atmospheres in the EU.These units may be CE marked for other Directives of the EU.CONN.1122334455ATEX Compliant2813d IIB -20°C≤ T amb≤ 75°C T6 EC-Type2813d IIB -20°C≤ T amb≤ 75°C T6 EC-TypePrinted in U.S.A. 11/20FR# 440700-00 Rev. 10©Copyright 2020 Dwyer Instruments, Inc.ADJUSTMENT1. To change the set-point, connect tubing or piping from high pressure port on bottom to one leg of a tee. Connect the second leg to a pressure gage of known accuracy and in an appropriate range. The third leg should be connected to a controllable pressure source.2. Connect a V/Ω meter or other circuit tester to snap switch to indicate when switching occurs.3. Slowly apply pressure to the system and note the pressure at which switching occurs, If adjustment is necessary, turn the adjustment screw (located internally at center next to snap switch) clockwise to raise or counterclockwise to lower the actuation point. When the required setting has been reached, exercise the switch through two or three additional cycles to verify consistent operation.MAINTENANCEThe moving parts of these switches need no maintenance or lubrication. The set-point is the only user adjustment. On models with optional drain fitting, periodically rotate small captive screw from side to side several times to keep drain path clear. Repairs to be conducted by Dwyer Instruments, Inc. Units in need of repair should be returned to the factory prepaid.Make sure conduit or cable are properly sealed. Electricalcomponents must be kept free of moisture, including condensation,at all times. To prevent ignition of hazardous atmosphere, disconnect the device from the supply circuit before opening. Keep assembly tightly closed when in operation.Limited Warranty: The Seller warrants all Dwyer Instruments, Inc. and equipment to be free from defects in workmanship or material under normal use and service for a period of one year from date of shipment. Liability under this warranty is limited to repair or replacement F.O.B. factory of any parts which prove to be defective within that time or repayment of the purchase price at the Seller’s option provided the instruments have been returned, transportation prepaid, within one year from the date of purchase. All technical advice, recommendations and services are based on technical data and information which the Seller believes to be reliable and are intended for use by persons having skill and knowledge of the business, at their own discretion. In no case is Seller liable beyond replacement of equipment F.O.B. factory or the full purchase price. This warranty does not apply if the maximum ratings label is removed or if the instrument or equipment is abused, altered, used at ratings above the maximum specified, or otherwise misused in any way.THIS EXPRESS LIMITED WARRANTY IS IN LIEU OF AND EXCLUDES ALL OTHER REPRESENTATIONS MADE BY ADVERTISEMENTS OR BY AGENTS AND ALL OTHER WARRANTIES, BOTH EXPRESS AND IMPLIED. THERE ARE NO IMPLIED WARRANTIES OF MERCHANTABILITY OR OF FITNESS FOR A PARTICULAR PURPOSE FOR GOODS COVERED HEREUNDER.Buyers Remedies: THE BUYER’S EXCLUSIVE AND SOLE REMEDY ON ACCOUNT OF OR IN RESPECT TO THE FURNISHING OF NONCONFORMING OR DEFECTIVE MATERIAL SHALL BE TO SECURE REPLACEMENT THEREOF AS AFORESAID, THE SELLER SHALL NOT IN ANY EVENT BE LIABLE FOR THE COST OF ANY LABOR EXPENDED ON ANY SUCH MATERIAL OR FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES TO ANYONE BY REASON OF THE FACT THAT IT SHALL HAVE BEEN NON-CONFORMING OR DEFECTIVE.Set-pointadjustment screwTerminal blockDrain/breatherExternal ground screwInternalground screwINSTALLATION1. LOCATION: Select a location where the temperature limit of 220°F (104°C) will not be exceeded. Locate the switch as close as possible to the pressure source for best response. Longer lengths of tubing will not affect the accuracy of the actuation point but can increase response time slightly.2. MOUNTING: Avoid mounting surfaces with excess vibration which could cause false actuation when pressure is near set-point. Attach switch with two 3/16˝ screws or bolts (not included) through mounting bracket. Normal position is with housing vertical.3. PRESSURE CONNECTION: Connect source(s) of pressure, vacuum or differential pressure to the 1/8˝ NPT ports as follows:A. Differential Pressures : Connect higher pressure to High Pressure port (bottom) and lower pressure to Low Pressure port (side).B. Pressure Only : Connect a single positive pressure to High Pressure port on bottom and leave Low Pressure port on side vented to atmosphere.C. Vacuum Only : Connect a single negative (vacuum) pressure to Low Pressure port on side and leave High Pressure port on bottom vented to atmosphere.4. ELECTRICAL CONNECTIONS: Either one or two SPDT snap switches areprovided with normally open contacts closing and normally closed contacts opening when pressure or vacuum increases beyond the set-point. A. Wire in accordance with local electrical codes.B. Wire lead models: Thread wires through conduit and connect to leads from snap switch(es). Black=Common, Red=Normally Closed, Blue=Normally OpenC. Terminal block models: Loosen screws on terminal block(s), insert stripped and tinned wires in side openings and tighten screws. Black=Common, Red=Normally Closed, Blue=Normally Open EC-Type Certificate Installation Instructions: Cable connectionThe cable entry device shall be certified in type of explosion protection flameproof enclosure “d”, suitable for conditions of use and correctly installed. For ambient temperatures over 70°C, cable and cable glands suitable for at least 95°C shall be used. Conduit connectionAn Ex d certified sealing device such as a conduit seal with setting compound shall be provided immediately to the entrance of the valve housing. For ambient temperatures over 70°C, the wiring and setting compound in the conduit seal shall be suitable forat least 95°C.D. Ground Screws: Three grounding connections are furnished; one inside housing with green headed machine screw, one on the exterior housing directly below the conduit entry with green headed machine screw, and the third is opposite the low pressure connection on the exterior with threaded stud and nut. Use any one.E. ATEX units only: The “T” class is dependent upon the media or ambient temperature, whichever is higher. The approved ratings are -20°C ≤ T amb ≤ 75°C T6. Replace cover after wiring connections are complete.。
PSW-190系列钢管压力开关产品说明书
Repeatability: PSW-191, 192, 195 and 196: ±1% PSW-193, 194, 197 and 198: ±1.5%
Shock: Setpoint repeats after 50 g 10 ms duration
1/2 NPT Conduit
1/4 NPT High Press 1/8 NPT Low Press
32 (1.26)
SPECIFICATIONS
Switch: SPDT, 5 A at 250 Vac or 30 Vdc gold-clad silver contacts for loads down to 5 mA at 6 Vdc, 2 mA at 12 Vdc and 1 mA at 24 Vdc
Pressure Connection: PSW-191, 192, 195 and 196: 1⁄8 NPT PSW-193, 194, 197 and 198: 1⁄4 NPT
Weight: 128 g (4.5 oz)
500 (20) Pigtail Leads
WIRE CODE BLUE = N.O. BLACK = N.C. VIOLET = COM.
H-18
Vibration: Setpoint repeats after 10 g, 5 to 500 cps
Enclosure and Cover: Aluminum with irridite finish rated for 100 hr salt spray; potted and gasketed for outdoor use
丹福斯（Danfoss）RT型号压力开关产品介绍说明书
RT Pressure switches incorporate a pressure controlled, single-pole change over swich where the contact position depends on the pressure in the connection port and the set value.The RT series consists of pressure switches, differential pressure switches and pressure switches for neutral zone regulation, all for general use within the industrial and marine segments. The series also covers safety pressure switches dedicated for steam boiler plants.For installations in which operation is particularly critical from safety and economic points of view, the use of fail-safe pressure switches is recommended.The use of gold-plated contacts is also recommended in such installations, provided operation involves only a few switching cycles or signal currents and voltages.Features• Simple design• High accuracy• High repeatability • Long operation life time• Available with all major marine approvalsData sheet | Pressure switch, RT Note:in addition we refer to the certificates, the copies of which can be ordered from Danfoss y CE marked in accordance with EN 60947-4/-5 for sale in Europey Further, the RT 19 , RT 30, RT 35, RT 112 W, RT 33, RT 31 and RT 32 series is CE markd in accordance with PED 97/23/EC, category IV, safety equipment.Approvals Overview/SurveyData sheet | Pressure switch, RTTechnical dataand code nos.When ordering, please state typeand code number.The type designationfor the letters below means:A: Unit suitable for the medium ammoniaL: Unit with neutral zonePressure switchesRT 113for manual setting;cover with windowsRT 116for tamper proof;cap and blank coverRT 262 ADifferential pressure switchPressure switches with adjustable neutral zoneDifferential pressure switches1)Supplied with ø6 / ø10 mm nipple. / 2)Non-snap action contacts (see spare parts and accessories, contact system 017-018166)3) With SPST and SPDT contact system for alarm and cut off function at 0.8 and 1 bar1) Supplied with ø6 / ø10 mm weld nipple1) Supplied with ø6 / ø10 mm weld nipple. / 2) With seal capPreferred versionsData sheet | Pressure switch, RT B: Safety units with external reset S: Safety units with internal resetThe designation letters mean:A: Units suitable for the medium ammonia.W: Units for control purposes.Pressure switches for steam plant, PED approved acc. to EN 12953-9 and EN 12922-11For rising pressureFor falling pressurePressure switches for low pressure steam plant (pressure monitoring)- not PED approvedTechnical data and orderingTechnical dataPreferred versionsData sheet | Pressure switch, RTMaterials in contact with the mediumMaterials in contact with the medium, PED approved switchesData sheet | Pressure switch, RTb. All other RT pressure switchesWhen the pressure falls to the set range value, contacts 1-2 make and contacts 1-4 brake. The contacts changeover to their original position when the pressure again rises to the set range plus the differential (see fig. 5).I. Alarm for falling pressure givenat the set range value.II. Alarm for rising pressure given at the set range value plus the differential.Units with min. reset can only be resetat a pressure corresponding to the set range value plus the differential.Functiona. RT 19, RT 30, and pressure switcheswith max. resetWhen the pressure exceeds the set range value, contacts 1-4 make and contact 1-2 brake. The contacts changeover to their initial position when the pressure falls to the range value minus the differential (see fig. 4). I.Alarm for rising pressure givenat the set range value.II. Alarm for falling pressure given at the set range value minus the differential.Units with max. reset can only be reset at a pressure corresponding to the set range value minus the differential, or a lower pressure.Data sheet | Pressure switch, RTExample 1An extra cooling water pump must start if the cooling water pressure falls below 6 bar, and must stop when the pressure exceeds 7 bar.Choose an RT 116 with a range of 1 – 10 bar and an adjustable differential of 0.2 – 1.3 bar.The start pressure of 6 bar must be set on the range scale. The differential must be set as the difference between the stop pressure (7 bar) and the start pressure (6 bar) = 1 bar. According to fig. 3, the differential setting disc must be set on 8.Example 2The burner on a steam boiler must cut out when the pressure exceeds 17 bar. Automatic restart must not occur.Choose an RT 19B with external reset. If extra safety is demanded, an RT 19S with internal max. reset can be used.The range is 5 – 25 bar and the differential is fixed at approx. 1 bar. The range scale must be set at 17 bar. After cut-out of the burner, manual reset is possible only when the pressure had fallen to the setting of 17 bar minus the differential: in this case, 16 bar and below.Example 3The min. permissible lubricating oil pressure for a gear is 3 bar. Reset must not be possible until the reason for oil pressure failure has been investigated. Choose an RT 200 with min. reset.The range value must be set while reading the range scale. Manual reset is possible only when the pressure has reached 3.2 bar (the differential is fixed at 0.2 bar or higher).Function (continuation)Functional description of RT unitswith fail-safe designFail-safe function for falling pressureFig. 5a shows a cross-section of a bellowselement for the RT 32W with fail-safe functionfor falling pressure. On rising pressure thecontact arm is actuated to break the connectionbetween terminals 1 and 2.On falling pressure the contact arm is actuatedto break the connection between terminals1 and 4. If a defect occurs in the bellows thesetting spring actuates the contact arm to breakthe connection between terminals 1 and 4, asin the case of falling pressure. This will occurirrespective of the pressure on the bellows.Fail-safe function for rising pressureFig. 5b shows a cross-section through a bellowselement for the RT 30W with fail-safe for risingpressure. On rising pressure the contact armis actuated to break the connection betweenterminals 1 and 2 .If a defect occurs in the inner bellows thepressure is led to the outer bellows. The outerbellows has an area three times as large as theinner bellows. The connection between terminals1 and2 becomes broken.If a defect occurs in the outer bellows, there willbe atmospheric pressure in the gap between thetwo bellows. This actuates the contact system tobreak the connection between terminals 1 and2. The important factor with the double bellowsdesign is the vacuum between the two bellows,and that in case of bellows break, no media willleak into the environment.Fig 5aFig. 5bData sheet | Pressure switch, RTPressure switches for liquid level control RT 1133. Connection to the side of the tankwith the RT 113 below the liquid levelWhere possible, this form of connection shouldbe used. If an air-absorbing liquid like oil isinvolved, it is preferable to 1 and 2. The resultingrange setting is the distance from the liquidsurface to the centre of the diaphragm housing.4. Connection in the tank with the RT 113above the liquid levelThis method is for use with air-absorbing liquidswhere connection type 3 is not possible. Theshortest horizontal tube length is determinedas described in 2. A shut-off valve is installedbetween the oil tank and water reservoir shownso that impurities can be drained from the waterreservoir through a bottom drain plug. Freshwater can then be poured into the reservoirthrough a filling connector in its top.The RT 113 pressure switch can be usedto control the liquid level in open tanks.Fig. 6 shows in principle, four different typesof installation.1. With air bell (see “Accessories”)For control purpose, the air bell should beinstalled 20 – 40 mm below the lowest liquidlevel. In addition, the tube between the RT 113and the air bell must be absolutely airtight. Ifonly an indication is required, the bell can beplaced 100 mm below the max. level. The RT 113must be set at 0 cm wg and the differential discon 1.2. Connection to the side of the tankwith the RT 113 above the liquid levelThe horizontal tube A must have a certain lengthin relation to the vertical tube B in order toensure reliable control. The length ofA can befound from fig. 7, using B and the range settingpressure C.Data sheet | Pressure switch, RT Application5. Setting knob 9. Range scale40. Neutral zone discRT-L pressure switches are fitted with a switch with an adjustable neutral zone. This enables the units to be used for floating control.The terminology involved is explained below.Floating controlA form of discontinuous control where thecorrecting element (e.g. valve, damper, or similar) moves towards one extreme position at a rate independent of the magnitude of the error when the error exceeds a definit positive value, and towards the opposite extreme position when the error exceeds a definite negative value.HuntingPeriodic variations of the controlled variable from the fixed reference.Neutral zoneThe interval in the controlled variable in which the correcting element does not respond (see fig. 13)The contact system in neutral zone units cannot be exchanged, as the contact system adjustment is adjusted to the other parts of the unit.Setting of neutral zoneThe range is set using the setting knob (5) fig. 8 while reading the range scale (9). The pressure set is the break pressure for contacts 1-4 (see fig. 13).The required neutral zone can be found in the diagram for the unit concerned. The position at which the neutral zone disc (40) must be set can be read from the lower scale in the diagram. The function can be seen in fig. 13.Data sheet | Pressure switch, RTExampleTogether with a VLT® static frequency converter, RT 200L neutral zone pressure switches can be used for the infinite control of a pump in, for example, a pressure boosting plant.In this case, the pump must be up and downregulated at 32 m and 25 m wg.The RT 200L must be set using the setting knob (5) fig. 8 page 9 at 3.5 bar (35 m wg) minus the fixed differential of 0.2 bar.The range setting is 3.5 - 0.2 = 3.3 bar.The neutral zone, 35 - 32 = 3 m wg,corresponding to 0.3 bar, must be set on the neutral zone disc (40) fig. 8 page 9. According to the diagram fig. 12 the disc setting is 1 or just over. A more accurate setting can be obtained by using the test setup shown in fig. 14.Setting of neutral zone© Danfoss | DCS (jmn) | 2016.06Data sheet | Pressure switch, RT IC.PD.P10.B6.02 | 520B7310 | 11ApplicationControl and monitoring of pressure differentials A differential pressure switch is a pressure controlled switch that cuts in and cuts out the current dependent on the pressure differential between the counteracting bellowselements and the set scale value. This unit is also available with an adjustable neutral zone (like the RT-L which is described on page 9.The setting disc (5) becomes accessible when the front cover is removed. The differential pressure is set by turning the disc with a screwdriver while reading the scale (9).For differential pressure switches with a changeover contact system, the contactdifferential is given as the differential pressure switches have a fixed differential. In units with an adjustable neutral zone, the neutral zone disc must also be set. See diagram in fig. 16.5. Setting disc 9. Range scaleSettingNote :When installing, the low pressure connection (LP) must always be upwards© Danfoss | DCS (jmn) | 2016.06Data sheet | Pressure switch, RT 12 | 520B7310 | IC.PD.P10.B6.02Functiona. Units with changeover switch (SPDT)b. Units with adjustable neutral zone (SPDTNP)If the differential pressure rises above the set value plus the differential, contacts 1-4 make.If the pressure falls by the amount of thedifferential (which is fixed in this unit), contacts 1-4 break. If the pressure falls to the neutral zone minus the differential, contacts 1-2 make. When the differential pressure rises again by an amount corresponding to the differential, contacts 1-2 break again.The contact function can be summed up as follows:I. Setting disc set for falling differential pressure.II. Neutral zone disc set for rising differential pressure.Example 1When the differential pressure exceeds 1.3 bar, a filter needs cleaning. The static pressure over the filter is 10 bar.According to the ordering table on page 4, the choice is an RT 260A (the RT 262A has a max. operating pressure on the low pressure side (LP) of 6 bar and is therefore not suitable for this application).Setting: Since a signal is required for rising differential pressure, the setting becomes 1.3 - 0.3 bar = 1.0 bar.Example 2The speed of a circulation pump must becontrolled to give a constant differential pressure of 10 m wg in a heating plant. The static plant pressure is 4 bar. The choice is an RT 262AL.The differential disc (5) fig. 15 page 13, must be set at 1 bar (10 m wg) minus the fixed differential of 0.1 bar, i.e. 0.9 bar. The neutral zone disc is factory-set (marked in red).I. Contacts make when differential pressure falls below the range scale setting.© Danfoss | DCS (jmn) | 2016.06RT 260A / RT 260ALRT 262A / RT 262A /RT 263ALData sheet | Pressure switch, RT IC.PD.P10.B6.02 | 520B7310 | 13Dimensions [mm] and weights [kg]Data sheet | Pressure switch, RT Spare parts and accessoriesSwitches1)At load types with low currents/voltages contact failure may occure on the silver contacts because of oxidation. In systems where such a contact failure is of great importance (alarm etc.), gold plated contacts are recommended.Contact systems for neutral zone units are not available as spare parts. Exchange not possible, as the contact system adjustment is adjusted to the other parts of the unit.The switch contacts are shown in the position they assume on falling pressure/temperature, i.e. after downward movement of the RT main spindle. The setting pointer of the control shows the scale value at which contact changeover occurs on falling pressure/temperature. An exception is switch no. 017-403066 with max. reset where the setting pointer shows the scale value at which contact changeover occurs on rising pressure.Data sheet | Pressure switch, RT© Danfoss | DCS (jmn) | 2016.06IC.PD.P10.B6.02 | 520B7310 | 15© Danfoss | DCS (jmn) | 2016.06Data sheet | Pressure switch, RT 16 | 520B7310 | IC.PD.P10.B6.02RT units have two mounting holes which become accessible when the front cover isremoved. Units fitted with switch 017-018166*) must be installed with the setting knob upwards. When installing differential pressure switches, the low pressure side (marked LP) must be installed upwards.The other pressure switches in the RT series can be installed in any position, expect that on plant subjected to severe vibrations it is advantageous to have the screwed cable entry downwards.*) Contact system with snap-action contact. See spare parts and accessories, page 13.Pressure connectionWhen fitting or removing pressure lines, the spanner flats on the pressure connection should be used to apply counter-torque.Steam plantTo protect the pressure element against temperature in excess to the maximumtemperature of the medium 150 °C (RT 113 90 °C), the insertion of water-filled loop is recommended. Water systemsWater in the pressure element is not harmful, but if frost is likely to occur a water-filled pressure element may burst. To prevent this happening, the pressure control can be allowed to operate on an air cushion.Media resistanceSee table of materials in contact with the medium. If seawater is involved, diaphragm pressure switches types KPS 43, KPS 45 and KPS 47 are recommended.PulsationsThe pressure switch must be connected in such a way that the pressure element is affected by pulsations as little as possible. A damping coil can be inserted (see “Accessories”). With strongly pulsating media, diaphragm pressure switches types KPS 43, KPS 45 and KPS 47 can be advantageous.Installation5. Setting knob 9. Range scale19. Differential setting disc SettingThe range is set by using the setting knob (5) while at the same time reading the scale (9). Tools must be used to set pressure switches fitted with a seal cap.In units having a fixed differential, the difference between cut-in and cut-out pressures is of course determined. On units having an adjustabledifferential the front cover must be removed. The differential disc (19) must be set in accordance with the diaphragm.Fig. 1. Positioning of unit© Danfoss | DCS (jmn) | 2016.06IC.PD.P10.B6.02 | 520B7310 | 17Selection of differentialTo ensure that the plant functions properly, a suitable differential pressure is necessary. Too small a differential will give rise to short running periods with a risk of hunting. Too high a differential will result in large pressure oscillations.Differential scale values are guiding.Installation。
NI-223E 压力开关说明书
使用说明书NI-223E版本：8 04/20COMPACT DIFF. PRESSURE SWITCHES SERIES DC & DE本手册提供的所有数据、声明和建议均基于我们认为可靠的信息。
由于有效使用条件超出了我们的控制范围，我们的产品销售条件是用户在遵循我耐候且本质安全：DC 系列隔爆：DE 系列高压接头 B 低压连接 C 电缆入口重量 5.4 kg 尺寸单位：mm 高压接头B 低压连接C 电缆入口重量 5.4 kg 尺寸单位：mm对于表面安装，使用四个M6螺钉。
注意：除非在认证图纸上标注，否则尺寸和重量不是强制性的。
注意•在安装、使用或维护仪表之前，有必要阅读并理解随附说明手册中给出的说明。
•仪表必须由有资质人员安装和维护。
• 只有在检查仪表特性是否符合工艺和设备要求后，才能进行安装 • 仪器的功能特点及其防护等级显示在固定在外壳上的标识牌上。
内容：1. 一般说明2. 工作原理3. 型号代码4. 标识牌和标记5. 设定值调节6. 设定值校准7. 仪表管道8. 安全完整性等级（SIL ）安装要求9. 安装和连接 10. 投入运行 11. 目视检查 12. 功能验证 13. 停止和拆卸 14. 处置 15. 故障排除在危险环境中使用的安全说明。
压力开关安全使用建议。
使用说明书NI-223E版本：8 04/201.一般说明1.1前言系列或型号的错误选择以及不正确的安装会导致故障并缩短仪器寿命。
不遵守本手册中给出的指示可能会对仪表、环境和人员造成损害。
1.2允许的超量程压力可超过工作范围，前提是其保持在仪器特性（真空或设计压力）中规定的范围内。
超过工作范围的连续差压可应用于仪表，前提是仪表特性中明确说明了这些压力。
不得超过技术规范和额定值中规定的电流和电压值。
短暂的超量程会对开关产生破坏性影响。
1.3机械振动一般会导致仪器某些部件的磨损或引起误启动。
因此，建议将仪器安装在没有振动的地方。
压力开关规格书(一)
压力开关规格书(一)压力开关规格书是一种文档，其中包含压力开关的特性、性能和规格的详细说明。
这份规格书通常由生产商为了向用户提供规范指导而编写。
在该文档中，金属行业、塑料制品行业、压缩空气行业等生产压力开关的行业都有相关的规格书。
下面将对压力开关规格书进行详细说明。
一、压力开关的基本定义压力开关是一种控制装置，能够检测载荷、流量、液位、压力等物理量中的一个或多个，并把信号转换为开关量输出。
压力开关广泛应用于各种工业流程中，被称为“工业大脑”。
二、压力开关规格书的组成1. 压力开关名称和描述。
这通常包括该开关的品牌、型号、描述、颜色和特殊标志等信息。
2. 压力开关的性能。
这包括开关的操作范围、传感器类型和信号输出等，并对每个参数进行详细说明。
3. 压力开关的物理规格。
这包括尺寸、外形、材料、连接方式和重量等，并对每个参数进行详细说明。
4. 压力开关的环境条件。
这包括开关操作和存储的环境条件，包括温度、湿度、振动、冲击和防护等，并对每个参数进行详细说明。
5. 压力开关的安装和维护。
这包括将开关安装到应用设备上所需的步骤以及保养与维护，还要提供相应的图片和维护指导。
6. 压力开关的技术支持。
开关生产商通常会提供技术支持服务，例如培训、现场调整和应用工程师的支持等。
三、压力开关规格书的使用场景工业流程控制是压力开关主要的使用场景。
压力开关可以帮助生产制造商在各种流程控制应用中保证高效和可靠的操作。
下面是一些典型的应用场景：1. 压缩空气系统使用压力开关来控制空气压力。
2. 自动喷水灭火系统使用压力开关来感应水压并控制水流量。
3. 蒸汽锅炉使用压力开关来监测锅炉的蒸汽压力，并通过开关控制燃烧器的燃气流量。
4. 汽车发动机同样使用压力开关来监测发动机的空气流量和温度，以帮助发动机顺畅运转。
总体来看，压力开关规格书是一个非常有用的文档，可以帮助用户了解压力开关的特性、性能和规格，进而正确合理地使用它们。
因此，对于那些需要使用如此设备的人来说，他们应该了解什么是压力开关规格书，以及如何使用它们来达到自己的需求。
asco-s-系列压力开关手册说明书
14Features:• Set point repeatability, +1% of operating range.• All wiring terminals, adjustments and visual scales are accessible from the front of the switch.• Choice of general purpose, watertight or explosion-proof enclosures.• Choice of fixed or full-range adjustable deadband.• Choice of single or two-stage units.• Manual reset units available.• Mounts in any position.• Rugged and vibration resistant.• Visual adjustment scales in psi and bars.• External adjusting nuts.• Separate electrical, pressure and adjusting chambers.• Wide selection of transducer wetted materials suitable for air, water, oil or corrosive fluids.• Mix and match switch and transducer components for increased stock flexibility or to change pressure ranges in field.General Description:ASCO S-Series pressure switches consist of a switch unit and a transducer unit.They can be orderedseparately for customer stocking and/or field assembly or as a complete factory-assembled unit.SwitchS-Series pressure switch units incorporate the unique ASCO TRI-POINT alternating fulcrum balance plate to control the operation of one or more electrical snap-action swtiches.The electrical snap-action switchtogether with the adjusting mechanism is a fully-tested,self-contained subassembly.TransducerT ransducer unit incorporates a diaphragm/piston type pressure sensor, and is also a fully-tested, self-contained subassembly.OperationWhen pressure is applied to the transducer it is converted into movement of the piston.This pistonmovement is then used to control the operation of the electrical snap-action switch in the switch unit.Standard Electrical RatingsSwitches for Pressure to 8000 psig, Vacuum, or Differential with General Purpose, Watertight or Explosion-Proof EnclosuresStandard Temperature RatingsOptions (See pages 34-35)EnclosuresASCO TRI-POINT S-Series switches are available in three standard enclosures.All of these enclosed units are made in accordance with NEMA and UL standards. General Purpose–Type 1.These enclosures are designed for indoor use to protect personnel from accidental contact with the equipment.S-Series general purpose switch units consist of a copper-free* aluminum die-cast body with a formed copper-free* aluminum cover;two 3/4”conduit hubs with one plug are provided.Watertight–T ype 4.Watertight and dust-tight enclo-sures are intended for use indoors and outdoors to protect the enclosed equipment against splashing or falling water, windblown dust and water, hose directed water, and severe external condensation.S-Series watertight switch units have a copper-free* aluminum die-cast body and a formed copper-free* aluminum cover with Buna “N”gaskets;two 3/4”conduit hubs with one plug are provided.Explosion-Proof–T ypes 7 and 9.T ype 7 enclosures are intended for use in locations defined by the National Electrical Code as Class I.T ype 9 enclosures are intended for Class II locations.Class I locations are those in which flammable gases are or may be present in the air in sufficient quantities to produce explosive or ignitable mixtures.Class I loca-tions are classified by group letter, which defines partic-ular atmospheres.Division 1 locations are areas where the hazardous concentration exists continuously, inter-mittently or periodically under normal operating condi-tions.Division 2 locations are those where the haz-ardous vapors are present only in case of accidental rupture or breakdown of equipment.ASCO TRI-POINT explosion-proof enclosures with letter B, C or D in the fifth position are listed for Class I, Groups B, C, and D, Division 1.They are also suitable for the less stringent Division 2 environment.Class II locations are those which are hazardous because of the presence of combustible dust.All ASCO TRI-POINT explosion-proof enclosures are listed for Groups E, F, and G locations.The switch body and cover are die-cast copper-free* aluminum with a Buna “N”gasket.T wo 3/4”conduit hubs with one plug are provided.Dimensions (inches)* Less than 0.6% copper.1516the maximumrange of the switch .1231718the maximum1934H-Series, P-Series and S-Series Snap-Action Switch OptionsOptional snap-action switches to meet specific electrical loads or application conditions are available on most ASCO TRI-POINT switch units. Generally, the construction of a switch unit with optional snap-action switches contains other specific parts and may be ordered only as a factory-built unit. To specify a particular optional construction, add the appropriate suffix to the switch unit action switch (suffix “P ”P-SeriesSwitch OptionsPanel Mount –Open frame P-Series compact switch units areavailable for panel mounting with the switch unit inside and the transducer outside. The panel separates the fluid sensing portion from the electromechanical portion. Five holes for bolts and operating stem must be drilled or punched through the panel.Three constructions are available: add the suffix listed below to the switch unit catalog number for the desired thickness.S-SeriesSwitch OptionsIndustrial Adjusting Nut Covers –Available in clear plastic or metal to prevent tampering with set point adjusting nuts.Clear plastic cover:To order, add suffix “1” to the switch unit catalog number, or order separately as SP01.Metal cover:To order, add suffix “2” to the switch unit catalog number, or order separately as SP02.JIC Construction –A switch unit having the electrical and adjusting nut covers attached to the switch body by a chain. Also designed to Type 13specifications. To order, add suffix “3”to the switch unit catalog number, or order separately as SP03.Terminal Block –Applicable to switch units with one single-poledouble-throw switch. The terminal strip is prewired to the snap-action switch. To order, add suffix “4” to the switch unit catalog number, or order separately as SP04.Factory Sealed –Explosion-proof units may be ordered with a factory seal separating the electrical chamber from the conduit hubs and 24” long #14 AWG 105°C. rated lead wires. To order, change the fourth digit of the “3”35Pressure Transducer OptionsP-Series and S-Series Temperature Transducer OptionsSpecial Wetted Materials –The following diaphragms maybe substituted on transducer body materials of aluminum,brass, polyester and stainless steel. To order, substitute the Oxygen Cleaning –Pressure transducers for oxygen serviceshould be specially cleaned. They are degreased and blacklight inspected, then assembled in a clean area and tested with oil-free air or nitrogen. Use metal body transducer with viton or neoprene diaphragm and add suffix “H ”Pressure Snubbers –A pressure snubber (1/4” NPTF by1/4” NPTM) installed in the transducer pressure connection will dampen the pressure spikes to a value which will not cause damage. It consists of a body with a porous metal disc of stainless steel through which the fluid passes. To order,select a snubber compatible with the fluid. Available by seperate catalog number only (see table below).Process Connection –A female process connection (1/4”NPT) is standard on all pressure transducers. A 1/2” NPT is available as an option on gauge pressure transducers. To order, add suffix “B ”Note: Armored Capillaries –Double braided copper armor isstandard for copper capillary units. Stainless steel spiral interlocked armor is available for stainless steel capillary units. Add suffix “C ” to transducer catalog number.Thermal Well –Use with direct or remote sensors forprotecting sensing bulb. This allows removal of bulb while maintaining a pressure-tight vessel. Available in 1/2” NPT or 3/4”NPT process connection in brass or 316 SS. Dimensions are in accordance with SAMA Std. RC17-9. Standard “U ” dimension (insertion length) is 2-1/2” for direct mount and 6’capillary units and is 4-1/2” for 12’capillary units.Longer Capillaries –Standard copper and stainless steelcapillary units can be furnished in 12’lengths. To order, add suffix “D ” to transducer catalog number. Consult ASCO for longer length capillaries.Union Connector –For use with remote units for mountingof bulb in fluid being controlled. Available in 1/2” NPT and 3/4” NPT process connections in brass or 316 SS.Thermal WellJam nuts provided with thermal wells.11Switch Unit – ASCO uses the term “switch unit ” to describe the electromechanical portion of a pressure or temperature switch. This is used in conjunction with a transducer unit to form a complete pressure or temperature switch.Transducer Unit – ASCO uses the term “transducer unit ” to describe that portion of a pressure or temperature switch to which a pressure or temperature is applied which converts the input signal to another form of energy to operate the switch unit.Two-Stage (Dual)– ASCO uses the term “two stage ” todescribe a pressure or temperature switch which is equivalent to two pressure or temperature switches which are independently adjustable. This switch is equivalent to two fixed deadband switches.Deadbands – The deadband is the difference between the set point and reset point readings. Deadbands are listed in the specification tables at nominal values. They are representative of the deadbands of the units at the middle of the range.The deadband values for the full range adjustable deadband switches and limited adjustable deadband switches indicate the values through which the deadband may be adjusted.Generally, as the set point is adjusted through the operating range, the deadband will vary. Normally, it will becomenarrower as the set point is towards the bottom of the range,and will become wider when the set point is towards the top of the range. The graph shown below indicates representative trends of this type of deadband variation.Temperature switch deadbands are a result of the characteris-tics of the vapor pressure curve as well as other factors.Normally, this results in a deadband which is narrower in the top third of the range than in the bottom third of the range.The values published are nominal and representative of mid-range set points.36Accuracy – The maximum deviation from the set point under specified operating condition (ambient temperature,barometric pressure, etc.).Adjustable Deadband – Refers to the capability of apressure or temperature switch to allow the deadband to be adjusted over a given range. Certain ASCO TRI-POINT switches have an adjustable deadband which can be adjusted over the total operating range of the switch.Adjustable Operating Range – The pressure or tempera-ture range of the switch within which the set point may be adjusted.Differential Pressure – The difference between twopressures. A differential pressure switch senses two pressure sources and can be adjusted to actuate on a desired difference between them.Guage Pressure – The actual reading of a typical pressure guage and is the difference between the pressure within a vessel and the atmospheric pressure surrounding it. It is normally measured in pounds per square inch (psig).Manual Reset – The switch is a semi-automatic device which operates automatically with a signal change in one direction but must be manually reset once the signal returns to its original position.Proof Pressure – A pressure which a device can besubjected to for extended periods of time without changes in its operating characteristics.Rated Overrange Temperature – A temperature which a device can be subjected to for extended periods of time without changes in its operating characteristics.Repeatability – The closeness of agreement among a number of consecutive measurements of the output for the same value of input under the same operating conditions approaching from the same direction. Repeatability isnormally specified as a percentage of the upper limit of the operating range.Example: Operating range 5-100 psig with +1%repeatability; equals +1% of 100 psig or +1 psig.Reset Point – After a pressure or temperature switch has reached its set point and operated the electrical switch, it must return to a point called the reset point before the electrical switch can return to its original position.Set Point – The pressure reading at which the electrical switch element changes contact position (it can be specified either increasing or decreasing).DefinitionsDeadbands1.5 x Catalog Value Catalog Value Half Catalog ValueBottom Mid TopPosition of Set Point in Range37These recommendations are to be used as a guide only, as service life of material is dependent on temperature, concentrations, or catalysts that may be added and other conditions which are beyond our control.Consult ASCO for specific service applications.Note:Items in black circles are standard catalog units.All others available on factory order.P - Indicates preferred construction. S - Indicates satisfactory construction.Transducer Material Code of Two Digits represents process connection material and diaphragm material, respectively; these are the sixth and seventh positions of the pressure transducer catalog number.Process Connection: 6th Position Diaphragm: 7th Position 1 Aluminum 4 316 S.S. 1 Buna “N ” 4 316 S.S.2 Brass 7 Nylon/Brass2 Viton6 Ethylene Propylene 3 303 S.S.3 Neoprene7 FluorosiliconeFluid Compatibility GuideFor high purity applications use stainless steel transducers.Notes:1Oxygen service requires special cleaning, specify suffix “H ”.2For steam service a condensate loop (pigtail) is required.3For pressure transducers for combustion service see pages 20-23.4Material availability refers to standard gauge pressure constructions only.5。
安全压力开关说明书
221 Code Process R ange & Temp.(6) Vac 0-600 1000 2000- Material Limits in.H 2O psi psi 3000 °F psi B-Buna N 0 to 150 ● ● ● ● V-Viton 20 to 300 ● ● ● T-Teflon 0 to 150 ● ● ● ● S-SS (5)(10) 0 to 300 ● ● P -Monel (5)(10) 0 to 300 ● ● NOTES: 1. Standard switch. 2. D ual switches are 2 SPDT snap-action switches not independently adjustable. 3. Estimated dc rating, 2.5A, 28 Vdc (not UL listed). 4. Estimated dc rating, .4A, 120 Vdc (not UL listed). 5. Available on pressure only. 6. A mbient operating temperature limits –20 to 150°F , all styles. Setpoint shift of ±1% of range per 50°F is normal. Switch calibrated at 70°F reference. 7. Items are wetted by process fluid. 8. Refer to Option Table. 9. O rder Option XUD, stainless steel process connection.10. On differential switches, stainless steel is available in 15, 30, 60 and 90 psid ranges only. Includes Teflon O-ring and 316 SS connection. TO ORDER THIS B-SERIES PRESSURE SWITCH:Pressure and Differential Pressure Switches, Watertight Enclosure, Type 400, B-Series • C hoice of actuators, including designs for fire-safe and NACE applications (8)• Readily available • Standard pressure connection materials: Pressure psi ranges - 316L stainless steel Differential psid ranges- Nickel-plated brass (9) of water ranges - Epoxy coated carbon steel B4 - P ressure switch, type 400, watertightenclosure meets NEMA 3, 4, 4X and 13, IP66 requirementsD4 - D ifferential pressure switch, type 400,watertight enclosure meets NEMA 3, 4, 4X and 13, IP66 requirementsThis general purpose Ashcroft ® switch series is ideal for use in virtually all Industrial and OEM applications.• Watertight NEMA 4X enclosure, IP66• Choice of switch elements for all applications, including hermeti-cally sealed• Wide choice of wetted materials, including all-welded Monel or stainless steel• Fixed or limited adjustable deadband• Approved for UL, CSA and FM (8) ratings • Setpoints adjustable from 15-100% of range4 - OPTIONS (See pages 238-239)5 - STANDARD PRESSURE RANGES (See page 235) 3 - ACTUATOR SEAL (7) Order D escription/Maximum Electrical Ratings Code UL/CSA Listed SPDT 20(4) Narrow deadband 15A, 125/250 Vac 21(9) Ammonia service 5A, 125/250 VacHermetically sealed22(3) switch, narrow 5A, 125/250 Vac deadband 23 Heavy duty ac 20A,125/250 Vac15A,125/250/480 Vac 24(1)General purpose 1/2A, 125 Vdc 1/4A, 250 Vdc 25 Heavy duty dc 10A,125/ Vac or dc 1/8HP 125/ Vac or dc 26(4)Sealed environment 15A, 125/250 Vac proof 27 High temp. 300°F 15A, 125/250 Vac 28Manual reset trip 15A, 125/250 Vac on increasing 29 Manual reset trip 15A, 125/250 Vac on decreasing 31 Low level (gold) 1A,125/250 Vac contactsHermetically sealed32 switch, general 11A, 125/250 Vac purpose 5A, 30 Vdc50 Variable deadband 15A,125/250 Vac UL/CSA Listed Dual SPDT (2)We recommend hermetically sealed switch elements for improved reliability. The hermetically sealed switch provides uncompromising contact protection in harsh or corrosive environments. The Ashcroft 400 Series is also approved for installation in Division II hazardous areas when supplied with hermetically sealed contacts.L-recognized component, LOOK FOR THIS AGENCY MARK ON OUR PRODUCTS。
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4 测量元件材质 Sensor Mat'l
5 设定值可调范围 Adjustable Set Point Range
6 精度 Accuracy
7 适用环境温度 Ambient Temperature
8 开关数量 Switch Quantity
9 开关触点形式 Switch Contact Form
10 触点容量 Contact Rating 负载 Load
介质 FLUID
操作温度 操作压力 OPER. OPER.
TEMP ℃
PRESS Mpa(G)
工艺管
道材质 PIPE MAT'L
版本 FA
RE
设定值 Setpoint 高 High 低 Low
附件
其他
说明 NOTES：Βιβλιοθήκη 编制校对审核
日期
11 12 13
电 过气 程连 连接 接形El式ec.PCroocnens.s C法o兰nn标. 准 Flange STR.
连接规格 Size 等级 Rating
14 法兰材质 Flange Mat'l
密封面形式 Facing
15 不灵敏区 Deadband
16 防护等级 Enclosure Protection
17 防爆等级 Explosion Proof
18 转换接头 Coverter Conn.
19 安装支架 Mounting Bracket
Miscell Accessories
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21 22 推荐制造商 Manufacturer
23
24 25 序号 位号 ITEM TAG No. No.
检测位置 SEVICE
压力开关 Pressure Switch
仪表规格书（压力开关） INSTRUMENT SPECIFICATION
(PRESSURE SWITCH)
档案号PROJECT No: 设计阶段 STAGE: 页数PAGE:
1 仪表名称 Instrument Name 类型 Type
2 型号 Model
3 测量元件类型 Senser Type