dpm-3

DPM-3
OPERATOR MANUAL
PLUG AND PLAY IEEE 1451.4COMPLIANT
T echniques
Transducer R
DIGITAL
PANEL
MOUNT METER 4006497
TABLE OF CONTENTS
1. TEDS IEEE 1451.4 INTRODUCTION (3)
INTRODUCTION (3)
2. GENERAL
3. RECEIVING & UNPACKING (4)
CONSIDERATIONS (4)
4. SAFETY
WIRING
INFORMATION (6)
5. CONNECTOR
ASSEMBLY (8)
6. MECHANICAL
PANEL
SETUP KEYS (10)
7. FRONT
8. ENABLING AND LOCKING OUT MENU ITEMS (12)
9. TEDS SIGNAL CONDITIONER IN TEDS MODE (13)
10. SETUP OF NON-TEDS TRANSDUCERS (17)
11. METER SCALING BY APPLYING KNOWN LOADS (18)
12. TEDS SIGNAL CONDITIONER WITH NON-TEDS TRANSDUCERS (19)
13. LOAD CELL & MICROVOLT SIGNAL CONDITIONER (23)
14. DUAL RELAY OUTPUT OPTION (25)
OUTPUT OPTION (28)
15. ANALOG
COMMUNICATION OPTIONS (29)
16. SERIAL
& POWER SUPPLY (34)
17. EXCITATION
OUTPUTS
CONTROL INPUTS (35)
18. DIGITAL
SETUP VIA PC (36)
19. INSTRUMENT
20. CUSTOM CURVE LINEARIZATION (39)
CALIBRATION (41)
21. METER
22. SPECIFICATIONS (41)
OF TERMS (44)
23. GLOSSARY
24. ACCESSORIES (50)
25. WARRANTY & REPAIR POLICY (52)
1. TEDS IEEE 1451.4 INTRODUCTION
The DPM-3 is a TEDS IEEE 1451.4 Plug and Play Smart Load Cell Meter. TEDS, or Transducer Electronic Data Sheet, is a set of electronic data in a standardized format defined within the IEEE 1451.4 standard. Stored in an EEPROM, this data specifies what type of sensor is present, describes its interface, and gives technical information such as sensitivity, bridge type, excitation, etc.
The DPM-3 automatically detects when a TEDS IEEE 1451.4 compliant Load Cell/Torque Sensor has been connected to it by using a built-in EEPROM detector. Once such a sensor has been detected, the DPM-3 displays a front panel TEDS indicator light, reads the EEPROM, stores the information in memory, and performs an automatic configuration. The built-in, sensor-related EEPROM may be of any of the following types: DS1973/DS2433, DS2431 or DS1971/DS2430A. The automatic system configuration function performs all steps needed to calibrate the TEDS IEEE 1451.4 compliant Load Cell/Torque Sensor and DPM-3 as a system. This includes the configured precision of 32 bits, 19 bits or 11 bits and the configured excitation voltage. Using the DPM-3 with a TEDS IEEE 1451.4 compliant Load Cell/Torque Sensor is as easy as plugging a mouse into a computer, making it a true plug and play experience.
The DPM-3 is safety certified to UL 61010-1 and to CSA C22.2#61010-1. It carries the ETL certification mark for the USA and Canada.
2. GENERAL INTRODUCTION
DPM-3 digital panel meters are a versatile, cost-effective solution to a wide variety of monitoring and control applications. They are easily set up to produce an accurate display of weight, load or direct reading of microvolts. Setup can be via front panel pushbuttons or the meter’s serial interface. Digital scaling of zero and span provides direct readout in engi-neering units. Digital calibration of all ranges eliminates drift associated with potentiometers found in non-microcomputer-based meters. Selective security lockout of the front panel keys protects against accidental changes to the meter setup.
A unique method of analog-to-digital conversion provides 60 conversions per second (50 for
50 Hz operation), while integrating the signal over a full line cycle for maximum noise rejection. Self-calibration cycles reduce the average reading rate to 56 per second (47 for 50 Hz). This fast read rate provides an accurate display of peak signal input and quick response in control applications.
An adaptive auto-filter automatically selects a time constant appropriate for the encountered signal noise level. This ensures stable displayed readings and outputs while responding rapidly to changes of the input signal that exceed a selected threshold value. Input signal polarity may be selected as normal or reverse.
The DPM-3 uses a lightweight, high-efficiency switching power supply that operates from either AC or DC voltages and complies with safety regulations. The meter can be powered worldwide without changes to the supply. An optional low voltage supply operates on 10 to 48 Vdc from batteries or 12 to 32 Vac from sources such as 400 Hz aircraft power. Both supplies have an isolated 10 Vdc excitation supply to power transducers.
The NEMA-4 (IP65) 1/8 DIN case is made of high impact 94V-0 UL-rated plastic. Mounting is from the front of the panel and requires less than 110 mm behind the panel. All wiring is by removable plugs conforming to UL61010C safety standards. All output options are isolated from meter and power ground by 250 Vac minimum.
Alarm or setpoint control is provided by an optional relay board with two or four Form C 8A mechanical relays or two or four Form A 120 mA solid state relays. The setpoints may be latching or non-latching, be energized above or below the setpoint, or operate in a fail-safe mode. The relays can operate from the filtered signal to reduce relay chatter or from the unfiltered signal for fastest response. Snubber circuits and a programmable relay switching time delay extend relay contact life.
An isolated analog output of 4-20 mA, 0-20 mA, 0-10V or -10 to +10V can be provided by an optional analog output board. The output is linearized to the display and can operate from the filtered or unfiltered signal input. It can be scaled via front panel pushbuttons or the meter’s serial interface.
Optional RS232, RS485, or USB serial interfaces allow the DPM-3 to communicate bidirec-tionally with computers, PLC’s or other digital devices. An optional USB-to-RS485 converter board allows a primary DPM-3 to be interfaced to a computer and to be the device server for a network of up to 31 other DPM-3’s on an RS485 bus, while itself retaining all capabilities of a meter.
Windows-based software is available from Transducer Techniques to program our meter and transmitters via a PC using the serial interface. This software can be downloaded at no charge from . Please see Section 19 for details.
3. RECEIVING & UNPACKING
Your DPM-3 meter was carefully tested and inspected prior to shipment. Should the meter be damaged in shipment, notify the freight carrier immediately. In the event the meter is not configured as ordered or the unit is inoperable, return the unit to Transducer Techniques for repair or replacement. Please include a detailed description of the problem.
4. SAFETY CONSIDERATIONS
Visually inspect the instrument for signs of damage. If damaged, do not attempt to operate.
Warning: Use of this equipment in a manner other than specified may impair the pro-tection of the device and subject the user to a hazard. Visually inspect the unit for signs of damage. If the unit is damaged, do not attempt to operate.
Caution:
•This unit must be powered with AC (mains) from 85-264 Vac with the high voltage power supply option, or 12-32 Vac (10-48 Vdc) with the low voltage power supply option. Verify that the proper power option is installed for the power to be used. This meter has no AC (mains) switch. It will be in operation as soon as power is connected.
• The 85-264 Vac mains connector (P1 Pins 1-3) is colored Green to differentiate it from other input and output connectors. The 12-32 Vac (10-48 Vdc) mains connector is colored Black.
• Do not make signal wiring changes or connections when power is applied to the instru-ment. Make signal connections before power is applied. If reconnection is required, disconnect the AC (mains) power before such wiring is attempted.
• To prevent electrical or fire hazard, do not expose the instrument to excessive moisture. • Do not operate the instrument in the presence of flammable gases or fumes; such an environment constitutes a definite safety hazard.
• This meter is designed to be mounted in a metal panel. Verify the panel cutout dimen-sions, and mount according to instructions.
Symbols applicable to this product:
4006497
ETL Mark. Indicates that product conforms to UL Std. 61010-1 and is certified
to CAN/USA Std. C22.2 No. 61010-1
CE Mark. Indicates that product meets EU safety, health and environmental
requirements.
Caution (refer to accompanying documents)
Caution, risk of electric shock.
Earth (ground) terminal.
Equipment protected throughout by double insulation or reinforced insulation.
Both direct and alternating current.
RoHS Symbol. Indicates that product is free from hazardous substances defined
in EC directive 2002/95/EC.
WEEE Symbol. Indicates that product should be recycled and not disposed of as
general waste.
Operating environment:
The meter is Class II (double insulated) equipment designed for use in Pollution degree 2.
5. CONNECTOR WIRING INFORMATION
5.1 CONNECTOR LOCATION
Connectors for signal and power are UL-rated screw-clamp terminal blocks that plug into mating jacks on the printed circuit board. Communication connectors can be a USB jack, a single RJ11 jack for RS232, dual RJ11 jacks for RS485, or dual RJ45 jacks for RS485.
Note: For wiring color, refer to Load Cell Calibration Certificate or to
/wiring-color-code.aspx
P3 - SERIAL COMMUNICATIONS P4 - ANALOG OUTPUT
6. MECHANICAL ASSEMBLY
REMOVING THE REAR PANEL
First remove any connectors. Use one hand to press in the two sides of the rear of the case, and the other hand to press down the two protruding tab releases at the top of the rear panel (see figure below). This will unhook the rear panel from the case.
Rear Panel REMOVING THE ELECTRONICS
With the rear panel removed, grasp the power supply board to the left and signal condi-tioner board to the right, and carefully slide the electronic assembly out through the rear of the case (see figure below).
INSTALLING NEW OPTION BOARDS Options boards plug into the main board at the front of the meter. These are plug-and-play and may installed in the field. They will be recognized by the software, which will provide access to the menu items associated with that board. If necessary, remove rear panel knockouts for new boards. Boards plug into connectors as follows:
Option Board
Main Board Jack Rear Panel Jack Power supply
Relay board
Serial interface board
Analog output board
Signal conditioner board P11 P12 P13 P14 P15
J1 J2 J3 J4 J5
Retaining tab with tab release Retaining tab
with tab release Retaining tab Retaining tab
Note: Corresponding main board and option board connectors have the same number of electrical lines. When an option board is correctly installed, the top and bottom edges of the main board and option board are aligned.
REASSEMBLING YOUR METER
Slide the electronics assembly into the case until the display board is seated flush against the front overlay. Insert the bottom tabs of the rear panel into the case, then carefully align the board connectors with the openings in the rear panel. If necessary, remove any rear panel knockouts for new option boards that may have been installed. Ensure that all option boards are properly aligned with the molded board retaining pins on the inside of the rear panel. With the rear panel in place, reinstall the input/output screw clamp terminal plugs.
PANEL MOUNTING
Ensure that the panel mounted gasket is in place against the back of the bezel. Turn the two mounting screws counterclockwise until the space between the mounting pawl and the rear of the gasket is greater than the panel thickness. Insert the meter in the panel cutout.
Turn the mounting screws clockwise until the meter is securely mounted in the panel. Do not overtighten.
The DPM-3 uses UL / VDE rated detachable
screw terminal connectors for signal and power.
7. FRONT PANEL SETUP KEYS
There are four front panel keys, which change function for the Run Mode and Menu Mode, effectively becoming eight keys. The keys are labeled with alphanumeric captions (MENU, PEAK, RESET, ALARMS) for the Run Mode and with symbols (Menu, Digit select, Value select, Reverse menu) for the Menu Mode.
MENU MODE KEY ACTION
In the Menu Mode, pressing a key momentarily advances to the next menu item. Holding down a key automatically advances through multiple menu items for fast menu navigation. KEYS IN RUN MODE
MENU Key. Pressing MENU from the Run Mode enters the Menu Mode. Pressing MENU repeatedly will step the meter through the various menu items (if these have not been locked out) and then back to the Run Mode.
PEAK Key. Pressing PEAK normally causes the peak value of the input signal to be displayed. The peak display then blinks to differentiate it from the normal present value display. Pressing PEAK again returns the display to the present value. The PEAK key can also be programmed to display Valley, alternating Peak or Valley, or to Tare the reading to zero. When Peak or Valley is selected, periodic horizontal bars at the top of the display indicate Peak, and periodic horizontal bars at the bottom indicate Valley.
RESET/TARE Key. Pressing RESET with PEAK resets peak and valley values.
Pressing RESET with ALARMS resets latched alarms. Pressing RESET with MENU performs a meter reset (same as power on). Meter reset can also be applied via a rear panel connector. Pressing and releasing RESET/TARE tares the meter value to zero.
ALARMS Key. Pressing ALARMS once displays the setpoint for Alarm 1. Pressing it again displays the setpoint for Alarm 2. Pressing it again returns to the present value.
KEYS IN MENU MODE
(Menu). Pressing MENU steps the meter through all menu items that have been
enabled and then back to the Run Mode. With the DC signal conditioner board and no option boards, available menu items are _, , , _FiLtr, , , , Hi in,, ,, , , . If a change has been made to a menu item, that change is saved to non-volatile memory when the MENU key is pressed next, and is displayed briefly.
(Digit Select). Pressing digit select from the InPut menu brings up all meter functions
available with the meter's signal conditioner. For the Load cell signal conditioner, these are, Strn and _dC u.
• Pressing digit select from the SEtuP, ConfFG, FiLtr, Lo in, Lo rd, Hi in, Hi rd, tArE, Loc 1, Loc 2 or Loc 3 menus items sequentially selects digit positions 1 - 5, as
indicated by a flashing digit: 00000, 00000, 00000, 00000, 00000.
(Value Select). Pressing value select for a flashing item (digit position or decimal point
position) will increment that item. Pressing MENU will save any changes.
(Reverse Menu). Pressing has the same effect as the MENU key, except that menu items are brought up in reverse order.
8. ENABLING & LOCKING OUT MENU ITEMS
For security reasons and ease of meter operation, any and all menu
items may be disabled or "locked out" so that they are no longer directly accessible from the front panel. Each function to be disabled
is set to "1" in menu items Loc 1, Loc 2, Loc 3 or Loc 4, and each function to be enabled is set to "0." The top menu items Loc 1, Loc
2, Loc 3 and Loc 4 can in turn be locked out by installing an internal hardware jumper. With the jumper installed, the operator only has access only to enabled menu items. With the jumper removed, the
user also has access to menu items Loc 1, Loc 2, Loc 3 and Loc 4.
SETTING HARDWARE LOCKOUT JUMPER
To access the lockout jumper, remove the rear panel per Section 6
and locate jumper “a” in the lower portion of the power supply board
next to the input connectors (see figure at right).
SETTING SOFTWARE LOCKOUTS
When setting up the meter, it may be necessary to
enable specific menu items by setting the corres-
ponding lockout digit to 0. Be sure to reset the lockout
digit to "1" if you do not want the menu item to be
changed by an operator.
Press the MENU key until Loc 1, Loc 2 Loc 3 or Loc
4 is displayed, as desired. Note:
lockout jumper must be removed (see above).
11111
Press PEAK to display the lockout status, consisting
of 1’s and 0’s. The left digit will flash. Press again
to step to the next digit, which will flash.
00000
12345
Press RESET to set the flashing digit to "0" to enable
the menu item or to "1" to disable. Press MENU to
enter. See the table to the right for list of menu items
that can be enabled or disabled.
9. TEDS SIGNAL CONDITIONER IN TEDS MODE
9.1 INTRODUCTION
The DPM-3 is a TEDS IEEE 1451.4 Plug and Play Smart Load Cell Meter. TEDS, or Transducer Electronic Data Sheet, is a set of electronic data in a standardized format defined within the IEEE 1451.4 standard that is stored in an EEPROM. This data specifies what type of sensor is present, describes its interface, and gives technical information such as sensitivity, bridge type, excitation, etc. The DPM-3 will automatically detect when a TEDS IEEE 1451.4 compliant Load Cell/Torque Sensor is connected to it, each and every time, by a built in EEPROM detector. Once a TEDS Sensor has been detected, the DPM-3 displays a front panel TEDS indicator light, reads the EEPROM and stores the information in memory and performs an automatic configuration. The automatic system configuration function performs all steps needed to calibrate the TEDS IEEE 1451.4 compliant Load Cell /Torque Sensor and DPM-3 as a system, including selecting the correct sensor excitation.
Using the DPM-3 with a TEDS IEEE 1451.4 compliant Load Cell/Torque Sensor is as easy as plugging a mouse into a computer, making it a true plug and play experience.
9.2 SCALING
When a DPM-3 connected to a TEDS transducer is powered on, the meter reads the data stored in the transducer. The excitation supply is automatically set to the correct value and the DPM-3 calculates the correct scaling to calibrate the meter and the transducer as a system. The jumper on the signal conditioner board must be set for the 50 mV range. See Section 13.1. If the Maximum Physical Value of the TEDS sensor exceeds 100,000, the calculated scale and offset are divided by 10 and the reading is in 10's of units.
If the full scale of the transducer is 50 pounds, the meter will display 50 at full scale output.
If more resolution is desired, the meter decimal point can be set so that the meter will read
50.0, 50.00, or 50.000. In this example, if another unit of measure, such as kilograms, is
desired, there are two alternatives.
If the meter has a serial communication board installed, TEDS Reader_Editor software can be used (see Section 24 "Accessories" for information). The electronic data sheet for your transducer can then be read electronically and be displayed on a computer screen.
The values can be modified (e.g., to display kilograms instead of pounds), and then written back to the transducer.
The meter Menu item "Tare," digits 4 and 5, can be set to 1 to configure the meter as a non-TEDS transducer type.
9.3 Error Messages
If there is a problem with the TEDS connection between the meter and the TEDS trans-ducer, one of the following error messages will be displayed at power on or when plugging in a TEDS transducer while the power is on:
Err 1 - TEDS data line shorted
Err 2 - No Presence pulse from TEDS
Err 3 - Improper Presence pulse width
Err 4 - TEDS family code in ROM in error
Err 5 - TEDS checksum error in the first or second 32 bytes
9.4 Software
TEDS Reader-Editor Software, P/N DPM-3-TRES, is available from Transducer Tech-niques. This software allows the user to read and edit information stored in the TEDS transducer. See Section 24 "Accessories" for ordering information.
9.5 Meter Setup
When setting up the meter, it may be necessary to enable some of the menu items.
See Section 8 “Enabling and Locking Out Menu Items” for the procedure.
MENU
KEY
DIGIT
SELECT KEY
VALUE
SELECT KEY
Meter Setup
_0__0
Power line frequency
0 Noise minimized for 60 Hz
1 Noise minimized for 50 Hz
_0__0
Rear control inputs
A & B
True = logic 1 (0V or
tied to digital ground)
False = logic 0 (5V or
open)
0 A = Reset, B = Meter Hold
1 A = Function Reset B = Peak or Valley Displ.
2 A = Meter Hold B = Peak or Valley Displ.
3 A = Meter Hold B = Tare
4 A = Peak or Valley B = Tare
5 A = Tare B = Reset
6 A = 0, B = 0, decimal point 1= XXXXX
A = 1,
B = 0, decimal point 1 = XXXX.X
A = 0,
B = 1, decimal point 1 = XXX.XX
A = 1,
B = 1, decimal point 1 = XX.XXX
7 A = 0, B = 0, decimal point 2 = XXXX.X
A = 1,
B = 0, decimal point 2 = XXX.XX
A = 0,
B = 1, decimal point 2 = XX.XXX
A = 1,
B = 1, decimal point 2 = X.XXX.X
8 A = Function Reset B = Display Blank
9 A = Hold B = Display Blank
A A = Peak or Valley
B = Display Blank
B A = Tare B = Display Blank
C A = Valley Display B = Peak Display
D A = Tare B = Tare Reset
Both control inputs A and B set to logic 1 for
selections 2, 4, A, C = Function Reset.
Both control inputs A and B set to logic 1 for
selections 0, 1, 3, 5, 8, 9, B, D = Meter Reset.
Meter
Configuration
_00___
Operation of front panel
PEAK button
0 Peak Display (max reading)
1 Valley Display (min reading)
2 Peak (1st push), Valley (2nd push)
_00___
Signal polarity
0 Normal Input Signal Polarity
1 Reverse Signal Polarity
MENU
KEY
DIGIT
SELECT KEY
VALUE
SELECT KEY
Filtering
00000
Alarm filtering
0 Alarm unfiltered
1 Alarm filtered
00000
Peak & Valley filtering
0 Peak & Valley unfiltered
1 Peak & Valley filtered
00000
Display filtering
0Display batch average every 16 readings
1 Display filtered signal
00000
Adaptive filter threshold
0 Low adaptive filter threshold level
1 High adaptive filter threshold level
00000
Input signal filtering.
Can be applied to dis-
play, setpoint, analog
output, data output.
0 Autofilter
1 Batch average, 16 readings
2 Moving average, 0.08 sec.
3 Moving average, 0.15 sec.
4 Moving average, 0.3 sec.
5 Moving average, 0.
6 sec.
6 Moving average, 1.2 sec.
7 Moving average, 2.4 sec.
8 Moving average, 4.8 sec.
9Moving average, 9.6 sec.
A Unfiltered
Decimal point
selection.
d.dddd
Determines decimal
point position & reading
resolution.
d.dddd dd.ddd ddd..d.
.Press ^ key to shift decimal point.
Decimal point is stored in TEDS memory.
Display shows TEds instead of StorE. Option board dependent menu items
.
Menu items related to alarm setup These will only appear if a relay board is detected. If so, please see Section14.
.. ..
Menu items related to analog output setup. These will only appear if an analog output board is detected. If so, see Section 15.
_
Tare & TEDS
selections.
0000_ Front panel
pushbutton Tare.
0 Front panel tare enabled
1 Front panel tare disabled
0000_
Auto-Tare.
0 Tare after meter reset
1 No tare after meter reset
0000_ TEDS Plug and
Play indicator.
0 Plug and Play indicator enabled
1 Plug and Play Indicator disabled
0000_
TEDS Plug and Play.
0 Plug and Play enabled
1 Plug and Play disabled
MENU KEY DIGIT SELECT KEY VALUE SELECT KEY
Option board dependent menu items
. . . . _
Menu items related to serial communications . These will only appear if an RS232,
RS485, or USB I/O board is detected. If so, see Section 16.
Transducer Serial No. If the serial number is 6 digits or less, press the Peak key once to display all digits 123456. If the serial number is
greater than 6 digits, press Peak once to display the first
digits 12–___, and press the Peak key again to
display the remaining digits 345678. Read only.
_
Units of measure. Read
only.
Cal date
00.00.00 Transducer calibration date in mm.dd.yy format (month, day, year). Read only. Cal initials _A _ b _C Initials of the person who performed the transducer calibration. Read only. Characters used are:
Cal period
___365 Required transducer calibration interval in days. Read only. --
Bridge ID brdg-A or brdg-b or brdg-C Identifies whether meter is monitoring bridge A, bridge B or bridge C.
10. SETUP OF NON-TEDS TRANSDUCERS
10.1 SCALING METHODS
Three methods are selectable for scaling the meter, as follows:
Scale and Offset Method (using calculated scale and offset). This method requires that you calculate the required scale and offset values and enter them into memory when the meter displays and . No calibration signals need to be applied to the meter. Coordinates of 2 Points Method (using values from sensor's calibration certificate). With this method, you enter the low input signal value, the display value for the low signal, the high input signal value, and the display value for the high input signal value. These values are entered when menu items , , and are displayed. No calibration signals need to be applied to the meter with this method, which is the most commonly used.
Reading Coordinates of 2 Points Method (applying a known weight or load). When using this method, the meter calculates the proper scaling and offset values, entering them into memory. The meter is connected to your sensor and looks at the values of the input signals to calibrate the meter and transducer as a system.
10.2 Implementing Scale and Offset Method (using calculated scale factor and offset) Apply power and press the MENU key until appears on the display.
Press the PEAK key, and four digits will appear on the display. Continue pressing the PEAK key until Digit 4 begins to flash _00. Make this digit a 0 by pressing the RESET key until 0 appears. Store the change by pressing the left MENU key. Perform any other programming changes are required for your application.
10.3 Implementing Coordinates of 2 Points Input Method (using values from the sensor's
calibration certificate)
Apply power and press the MENU key until appears on the display.
Press the PEAK key, and four digits will appear on the display. Continue pressing the PEAK key until Digit 4 begins to flash _10. Make this digit a 1 by pressing the RESET key until 1 appears. Store the change by pressing the MENU key. Reset the meter.
Press the MENU key until appears. Using the PEAK and RESET keys, enter the low input value. Push the MENU key until appears. Using the PEAK and RESET keys, enter the low reading to be displayed. Repeat this procedure for and . Perform any other programming changes that are required for your application.
10.4 Implementing Reading Coordinates of 2 Points Method (applying a known load) Apply power and press the left MENU key until appears on the display.
Press the PEAK key, and four digits will appear on the display. Continue pressing the PEAK key until the Digit 4 begins to flash _20. Make this digit a 2 by pressing the RESET key until 2 appears. Store the change by pressing the left MENU key. Reset the meter.
Go to Section 11 and perform the procedure of applying known low and high loads. Perform any other programming changes that are required for your application.
11. METER SCALING BY APPLYING KNOWN LOADS
Apply power and press the left MENU key until appears on the display. Press the PEAK key, and 4 digits will appear on the display. Continue pressing the PEAK key until the Digit 4 begins to flash _20. Make this digit a 2 by pressing the RESET key until 2 appears. Store the change by pressing the left MENU key. Reset the meter. Connect the meter to your sensor or transducer. Use the procedure below to scale your meter by
applying known loads.
MENU KEY
DIGIT SELECT
KEY
VALUE SELECT KEY
__ Press the key.
Lo In will appear on the
meter display. Apply the low
known load.
_0.021 Press the key. The meter will begin to take readings and display the low signal value. _0.021 Press the key to store the Lo In (low signal) value. __ Press the key.
Hi In will appear on the
meter display. Apply the high
known load.
20.094 Press the key. The meter will begin to take readings and display the high signal value. 20.094 Press the key to store the Hi In (high signal) value. __ Press the key.
Lo Rd will appear on the me-
ter display. Enter the desired
low load reading value. _0001.5 Press the key to select a digit, which will flash. 00000 0.0000
0.0000 0.0000
0000.0 Press the key to select a value from 0 to 9 for the flashing digit. The deci-mal is fixed by dEC.Pt . __ Press the key. Hi Rd will appear on the me-ter display. Enter the desired high load reading value.
_1000.0 Press the key
to select a digit, which will
flash.
00000 0.0000
0.0000 0.0000 5000.0 Press the key to select a value from 0 to 9 for the flashing digit. The deci-mal is fixed by dEC.Pt .。