仪表图形符号详解

3、仪表图形符号
~是直径为12mm（或10mm）的细实线圆圈。 仪表位号的字母或阿拉伯数字较多，圆圈内
不能容纳时，可以断开。
处理两个或多个变量，或处理一个变量但有 多个功能的复式仪表，可用相切的仪表圆圈表示。
当两个测量点引到一台复式仪表上，而两个 测量点在图纸上距离较远或不在同一张图纸上， 则分别用两个相切的实线圆圈和虚线圆圈表示。
其他仪表或功能图形符号1
FE 4
流量检测元件的通用符号
～ FE
4
~
超声流量计
FE 5
差压式指示流量计 法兰或角接取压孔板
FI 17
转子流量计
～ FE
18
M 电磁流量计
FT 21
流量元件和变送器为一体
FE
FC 19
流量控制器
FE 20
旋涡传感器
FE 20
流量喷嘴
Parents generally value the first class, mainly to see whether the students can accept the tutor, so the first class is more important. It is best to understand the students' learning situation first, to communicate well with their parents in advance, to make adequate preparations for the students' study habits, learning habits, good
Parents generally value the first class, mainly to see whether the students can accept the tutor, so the first class is more important. It is best to understand the students' learning situation first, to communicate well with their parents in advance, to make adequate preparations for the students' study habits, leBiblioteka Baidurning habits, good
带手轮的气动 薄膜执行机构
带气动阀门定位器的 带电气阀门定位器的 气动薄膜执行机构 气动薄膜执行机构
S R
S R
带人工复位装置的执行机构 （以电磁执行机构为例）
带远程复位装置的执行机构 （以电磁执行机构为例）
被测变量和仪表功能的字母代号 Parentsgenerally value the firstclass, mainly tosee whether the students can accept the tutor, sothe firstclass ismore important. Itisbest tounderstand the students' learning situation first, tocommunicate well withtheir parents inadvance, tomake adequate preparations for the students' study habits, learning habits, good
国家行业标准HG20505-92
《过程检测和控制系统用文字代号和图形符号》 一、图形符号
1、测量点 测量点（包括检出元件）是过程设备或管道符号引到
仪表圆圈的连接引线的起点，一般无特定的图形符号。
若测量点位于设备中， 要标出测量点的位置：
测量点
d=2㎜
Parents generally value the first class, mainly to see whether the students can accept the tutor, so the first class is more important. It is best to understand the students' learning situation first, to communicate well with their parents in advance, to make adequate preparations for the students' study habits, learning habits, good
修饰词 高
Parents generally value the first class, mainly to see whether the students can accept the tutor, so the first class is more important. It is best to understand the students' learning situation first, to communicate well with their parents in advance, to make adequate preparations for the students' study habits, learning habits, good
2、连接线图形符号
仪表圆圈与过程测量点的连接引线，通用的仪表 信号线和能源线的符号是细实线。
当有必要标注能源类别时，可采用相应的缩写 标注在能源线符号之上。
通用的仪表信号线： 0.14MPa的空气源
细实线
AS-0.14
24V的直流电源
ES-24DC
气压信号线：
二进制电信号：
电信号线：
或
Parents generally value the first class, mainly to see whether the students can accept the tutor, so the first class is more important. It is best to understand the students' learning situation first, to communicate well with their parents in advance, to make adequate preparations for the students' study habits, learning habits, good
带弹簧的 薄膜执行机构
不带弹簧的 薄膜执行机构
M
电动执行机构
D
数字执行机构
S
电磁执行机构
活塞执行机构单作用
活塞执行机构双作用
执行机构图形符号2 Parents generally value the first class, mainly to see whether the students can accept the tutor, so the first class is more important. It is best to understand the students' learning situation first, to communicate well with their parents in advance, to make adequate preparations for the students' study habits, learning habits, good
Parents generally value the first class, mainly to see whether the students can accept the tutor, so the first class is more important. It is best to understand the students' learning situation first, to communicate well with their parents in advance, to make adequate preparations for the students' study habits, learning habits, good
其他仪表或功能图形符号2
KI 26
时钟
指示灯
R 复位装置
P 吹气或冲洗装置
I 一般的联锁逻辑
隔膜隔离
Parents generally value the first class, mainly to see whether the students can accept the tutor, so the first class is more important. It is best to understand the students' learning situation first, to communicate well with their parents in advance, to make adequate preparations for the students' study habits, learning habits, good
测量点A
测量点B
Parents generally value the first class, mainly to see whether the students can accept the tutor, so the first class is more important. It is best to understand the students' learning situation first, to communicate well with their parents in advance, to make adequate preparations for the students' study habits, learning habits, good
控制阀体图形符号、风门图形符号
截止阀
角阀
三通阀
四通阀
球阀
蝶阀
隔膜阀
闸阀
风门或百叶窗
执行机构图形符号1 Parents generally value the first class, mainly to see whether the students can accept the tutor, so the first class is more important. It is best to understand the students' learning situation first, to communicate well with their parents in advance, to make adequate preparations for the students' study habits, learning habits, good
被测变量及仪表功能字母组合示例（以流量为例）
控制器： FRC-流量记录调节； FIC-流量指示调节
读出仪表： FR-流量记录； FI-流量指示
开关和报警装置：FSH-流量高报警 FSL-流量低报警 FSHL-流量高低组合报警
变送器：FRT-流量记录变送； FIT-流量指示变送； FT-流量变送 检测元件：FE-流量检测 测试点：FP-流量测试点 最终执行元件：FV-流量执行元件
第一位字母
后继字母
被测变量
修饰词
A
分析
C
电导率
E
电压(电动势)
读出功能 报警
检测元件
输出功能 控制
F
流量
比(分数)
H
手动
I
电流
指示
K 时间、时间程序 变化速率
L
物位
灯
M 水分或湿度 瞬动
操作器 低
中、中间
P
压力、真空
连接点、测试点
Q
流量
积算、累计
R
核辐射
记录
S 速度、频率 安全
T
温度
开关、联锁 传送
集散控制系统仪表图形符号
12或10mm
一个部件的计算机 功能图形符号：
内部连接的可编程逻辑 控制器功能图形符号：
12或10mm
12或10mm
Parents generally value the first class, mainly to see whether the students can accept the tutor, so the first class is more important. It is best to understand the students' learning situation first, to communicate well with their parents in advance, to make adequate preparations for the students' study habits, learning habits, good