Topcon A2677 manual Manual Entry of Pressure Calibration Factors Spray ECU Only

X20 Sprayer Reference Manual

Correction Factor After a Pressure Calibration is Unacceptable

If the Pressure Readout is less than the Pressure Gauge:

1. Add the difference

If the Pressure Readout is more than the Pressure Gauge:

1. Subtract the difference

Eg: If the Pressure Readout reads 400kpa and the Pressure Gauge reads 450kpa, add the difference of 50kpa to the Pressure Gauge reading during the next calibration: enter a correction factor of ‘500kpa’ using the screen keyboard.

1.Select RESTORE FACTORY DEFAULTS at the bottom of Tank Pressure window (Figure 10-1 on page 10-1)

2.Select CALIBRATE SENSOR in the Tank Pressure window (Figure 10-1 on page 10-1)

3.Follow the on screen directions to calibrate the Pressure Sensor.

When the pump is at operating pressure (eg: 450kpa) and the screen keyboard window appears, you will enter in the new correction factor, using the above formula (eg: ‘500’).

Manual Entry of Pressure Calibration Factors (Spray ECU Only)

Manual Entry of Pressure Calibration Factors can only be selected if Spray ECU was selected as the controller (page 8-7) and either a Current or Voltage type of Pressure Sensor is fitted to the Sprayer.

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