Xylem 19 001 300 R2 Silent Storm VFD Pumping System OMRON Touch Screen Display Manual - Manual (Page 74)

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70 Omron Touch-Screen Display
1) Close the ball valve that isolates the particular pressure transducer that you are trying to calibrate.
2) Disconnect the black tubing at the pressure transducer.
3) View and average the raw data value that is in MinRaw (:20 or :21). Enter data in MinIn (:60 or
:61) and in MinIn (:70 or :71).
4) Enter 0 in MinOut (:90 or :91).
5) Hold the disconnected end of the black tubing, crack open the pressure transducer ball valve to
bleed the air out of the tube, and reconnect to the pressure transducer.
6) Fully open the pressure transducer ball valve.
Warning:
Ensure that you point the tubing discharge away from all electrical components.
· Optionally, press the Main Menu touch key to return to the Main Menu. (See also, Main Menu .)
· Optionally, press Back to return to the N Register Access screen.
· Optionally, press the down arrow (▼) to return to display Calibration page 2.
2.13.1.2 Calibrating Maximum Pressure
Calibration page 1 shows the settings for Channel 0, the downstream transducer and Channel 1 the
upstream transducer. Values are shown in PSI. Use the following procedure to calibrate maximum
pressure.
There are two ways to calibrate the maximum pressure. Either apply a 20 mA signal using a (signal
generator) to the correct channel on the PLC, or turn on the pump station and build the upstream or
downstream pressure to setpoint pressure.
Calibrating the maximum pressure using the signal generator