Setting Up- Calibrating the Pressure Sensor | V1.98 21/06/06 |
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17.2 CALIBRATING THE PRESSURE SENSOR
Note: Before Calibrating the Pressure Sensor make sure you have selected which ‘Type’ of Pressure Sensor is connected to the system, and what ‘Calibration Method’ you are going to use. See Sections 9.0 and 9.1.
Calibrate Pressure Sensor
Each time the Pressure Sensor needs to be calibrated select the ‘Restore Factory Defaults’ button at the bottom of the ‘Tank X Pressure’ window.
Also a Manual Pressure gauge must be fitted to the system to determine the actual pressure for calibration purposes.
Select the ‘CALIBRATE SENSOR’ button.
Then follow the on screen directions to calibrate the Pressure Sensor.
To calibrate the sensor, the ZYNX Console will take a zero reading of the pressure when the pump is switched OFF. Then another reading of the pressure when the pump is at ‘Operating pressure’. The operator will enter the actual pressure as read from a ‘Glass Pressure Gauge’, using the screen keyboard
Once the calibration is complete check the ‘Pressure Readout’ from the ‘Working Screen’ and compare it against the ‘Glass Pressure Gauge’. If the difference is more than 10% then make note of the ‘Actual Pressure’ and the ‘Pressure Readout’ from the ‘Working Screen’.
Correction Factor after a Pressure Calibration is unacceptable:
If the ‘Pressure Readout’ is less than the Pressure Gauge then ADD the difference.
If the ‘Pressure Readout’ is more than the Pressure Gauge then SUBTRACT the difference. Eg. If the ‘Pressure Readout’ reads ‘400kpa’ and the Pressure Gauge reads ‘450kPa’, therefore ADD the difference of 50kPa to the Pressure Gauge reading during the next calibration, therefore enter a correction factor of ‘500kpa’ using the screen keyboard.
Select the ‘Restore Factory Defaults’ button. Select the ‘CALIBRATE SENSOR’ button.
Then follow the on screen directions to calibrate the Pressure Sensor.
When the pump is at operating pressure( eg 450kPa) and screen keyboard window appears, you will enter in the new correction factor, using the above formula, (eg. using above example 500).
17.3 Manual Entry of Pressure Calibration Factors (Spray ECU only)
Note: Manual Entry of Pressure Calibration Factors can only be selected if ‘Spray ECU ‘ is selected then either a ‘Current’ or ‘Voltage’ type of Pressure Sensor is fitted to the sprayer. ‘Manual Entry’ has to be selected as the Calibration Method. See Section 9.1 for more information.
When the ‘Calibration Method’ is set to ‘Manual Entry’, the Pressure Sensor factors can be entered in using the ‘Sensor Specifications’ button on the OPTIONS/SENSORS page OR can be entered by selecting the ‘CALIBRATE SENSOR’ button on the ‘Tank X Pressure’ window. Both buttons perform the same function and either button can be used to enter the pressure sensor factors. See Section 9.1 (Calibration Method) for explanation for entering the pressure sensor factors.
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