5calibration error messages, Chapter 5ouput signals, 1output signal overview – Cooper Instruments & Systems DPG 100 Digital Pressure Test Gage User Manual
Page 14: 2specifications, 1limit relay option, 5 vdc output, Wire 4-20 ma output, Calibration error messages, Chapter 5 ouput signals, Output signal overview
4.5
Calibration Error Messages
If unexpected pressures are encountered during the calibration procedure, the instrument will alert the user by
flashing the word "HELP” and a message number on the display. This indicates that the calibration process cannot
continue, and that you must turn the instrument off and re-calibrate again when the error has been corrected. A list
of error message numbers and their causes is given in "TROUBLESHOOTING" in Chapter 7.
CHAPTER 5
OUPUT SIGNALS
5.1
Output Signal Overview
Outputs of 4-20 mA, 0-5 VDC, and dual-Iimit relays are available as options. Each unit comes completely wired with
3 feet (standard) of cable so that the user can power and use the gauge immediately.
5.2 Specifications
5.2.1 Limit Relay Option
Power Required:
11-32 VDC @ 30 mA max.
Number Of Relays:
2 form "C" (i.e. normally open, common, normally closed). One
relay for "high" limit, another for "low" limit.
Connection:
Via terminal blocks inside case Interface: 3 feet of cable with
strain relief
Update Rate:
same as display
Relay Contact Rating:
1 Amp @ 24 VDC
0.5 Amp @ 48 VDC
Max. switched power: 24W
Max. switched voltage: 60V peak-peak
Limit Setup:
Via front panel push buttons
Limit Hysteresis:
1% of full scale
Limit Indicators:
Front panel LED
"L 1" LED is lit when pressure is below the low limit setpoint.
"L2" LED is lit when pressure is above the high limit setpoint.
5.2.2 0-5 VDC Output
Power Required:
11-32 VDC @ 30 mA max.
Output:
0-5 VDC +1- 0.25% of full scale output
Display & Output Zero Adjust:
Via front panel push buttons
Output Only Zero Adjust:
Internal Potentiometer
Output Only Span Adjust:
Internal Potentiometer
Operating Temperature:
30 to 160 degrees F
Connection:
Via terminal blocks inside case
Interface:
3 feet of cable with strain relief
Update Rate:
same as display
Max. Output Current:
0.2 mA
Short Circuit Protection:
+Output to -Output
Minimum Output:
At least -2.5% of full scale
Maximum Output:
At least 102.5% of full scale
Reverse Voltage Protected:
Yes
5.2.3 2-wire 4-20 mA Output
Supply Voltage:
2-wire loop, 11-32 VDC (load dependent, see figure 4-1)
Output:
4-20 mA +1- .25% of full scale output
Display & Output Zero Adjust:
Via front panel pushbuttons
Output Only Zero Adjust:
Internal Potentiometer
Output Only Span Adjust:
Internal Potentiometer
Operating Temperature:
30 to 160 degrees F
Connection:
Via terminal blocks inside case
DPG 100
11
Rev Feb 2001