Mensor/WIKA Operating Instructions Series CPG 2500
69
Digital Pressure Gauge
SERIES CPG 2500
3.
Connect a DMM to the analog output connector on the rear panel of the instru-
ment. Apply a known true pressure at or near zero and take a reading with the DMM.
Calculate the equivalent analog output voltage for the applied pressure using the
formula:
voltage span
x measured pressure + voltage minimum
pressure span
Subtract this value from the DMM reading. Send the resulting offset value to the
transducer with the Analogzero command.
4.
Apply a known true pressure at or near the full scale pressure of the transducer. Take
a reading with the DMM. Calculate the equivalent analog output voltage for the ap-
plied pressure using the formula:
voltage span
x measured pressure + voltage minimum
pressure span
Divide the calculated value by the reading of the DMM. The resulting value is the
span correction factor and should be loaded into the transducer using the Analog-
span command.
5.
Send a Analogsave command to the transducer to move the correction factors to
non-volatile memory.
6.
The analog output can also be calibrated using a local user interface. Press the
channel setup key, the adjust tab, and then the calibration functions key. A pass-
word screen will appear. Enter the correct password. The calibrate screen will ap-
pear. Press the sensor tab and then press the appropriate analog button. The analog
calibration screen will appear. Zero and span can now be adjusted using the + and
- buttons. The voltage will actively change as the adjust buttons are pressed.
8.3.3 Specifications
Resolution:
0-1 VDC
1 part per 80,000 minimum
0-5 VDC
1 part per 400,000 minimum
0-10 VDC
1 part per 800,000 minimum
Update Rate: 150mS
Summary of Contents for SERIES CPG 2500
Page 87: ......
