GEARENCH U116H-001L PETOL HYDRA-TORK - Manual (Page 19)

Calibration
Periodic calibration of the digital display and recorder outputs is recommended to maintain
the highest possible accuracy. The following procedures should be used for calibration.
1. Connect a calibrated pressure indicator to any pressurized port on the console.
2. Remove the digital panel meter covers as shown. The power, signal and analog output
wires must remain connected to the meter. See the calibration adjustment diagram below
for the adjustment locations.
3. Apply pressure to the pressure indicator. The table below lists the recommended
pressure values and the theoretical display and analog output values.
4. Adjust the zero and span controls as needed. Adjust the meter display prior to the analog
output, as the meter controls will also affect the analog output.
5. Replace the digital panel meter covers and return the unit to service.
17