Pressure Calibrator
Calibration Adjustment
11
Adjust Pressure
The test equipment to adjust RTD is listed in Table 10.
Table 10. List of Test Equipment to Calibrate Pressure Input
Quantity Manufacturer Model Equipment
1 Ruska Ruska 7250xi Pressure Controller/Calibrator
Note
The Product uses a 1/8" NPT female connection in the pressure
input port. Various adapters may be needed to connect to the
pressure standard. Always make sure the hose, tubing, and fittings
have a rated working pressure at or above the pressure of the
Product. Also it is important that there be no leaks. To achieve
accurate calibration, use PTFE tape where appropriate.
1. Once connected, send this command to put the unit in pressure mode:
FUNC LOWER,P1
2. Send the command:
OFFSET_ADJ?
3. Note the value returned.
4. Use the pressure standard to input a value equal or close to the noted value.
5. When the pressure is stable, send the command:
OFFSET_ADJ n
where n is the entered pressure.
6. Send the command:
GAIN_ADJ? command.
7. Note the value returned.
8. Use the pressure standard to input a value equal or close to the noted value.
9. When the pressure is stable send the command:
GAIN_ADJ n
where n is the applied pressure.
Pressure has now been adjusted.
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