Two-Point Pressure Calibration - Results; Approved Service Agents - GE BAKER HUGHES DPS 5000 Series Instruction Manual

a. Apply Pressure (AP2) at 90% of the full-scale pressure (in mbar) and allow the
pressure to become stable.
b. Record the Field Value (FV2) that appears in object 0x6100 01 (Pressure
Value). Record the value in mbar.
4. Calculate the new values for the calibration data:
• NEW GAIN = [GAIN] * [(AP1 - AP2) / (FV1 - FV2)]
• NEW OFFSET = [(OFFSET) - FV1] + [(AP1) * [(AP1 - AP2) / (FV1 - FV2)]]
The value for the NEW OFFSET is in mbar.
5. Write the new values for the calibration data back to the CANopen Object Dictionary:
a. Set object 0x2200 00 (calibration access pin) to 4118.
b. Set object 0x2207 00 (pressure gain) to the NEW GAIN value.
c. Set object 0x2208 00 (pressure offset) to the NEW OFFSET value. The value
for the NEW OFFSET is in mbar.
d. Set object 0x2200 00 (calibration access pin) to 0.
6. Confirm that the new values for the calibration data are correct:
a. Repeat steps 2 and 3.
7. Write the new values for the last and next calibration dates back to the CANopen
Object Dictionary:
a. Set object 0x2200 00 (Calibration Access Pin) to 4118.
b. Set objects 0x2201 00 to 0x2203 00 to the new values for the last calibration
year, month, day.
c. Set objects 0x2204 00 to 0x2206 00 to the new values for the next calibration
year, month, day.
d. Set object 0x2200 00 (Calibration Access Pin) to 0.
8. If applicable, reset the values for the out-of-limit counters (objects 0x2006 to
0x2009).
4.4.3 Two-Point Pressure Calibration – Results
For correct operation, the value for the NEW GAIN is in the range 0.9 to 1.1. If the value is not
in this range, this shows either a defective unit or defective calibration equipment.

4.5 Approved Service Agents

Find the approved service agents at: www.gemeasurement.com
© 2018 Baker Hughes, a GE company – All rights reserved.
Approved Service Agents
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