Abnormal temperature display
● If the temperature display is abnormally high when the battery is powered, the battery is dead
If the temperature display is below zero or much lower, the circuit board temperature chip is damaged, return the circuit board to the factory or send a replacement board.
Use a multimeter to measure the resistance value of the temperature line against the PT100 or PT1000 temperature comparison table.
If the temperature display is always -0.0℃, it means that the temperature signal line is loose or fallen off.
Solution: Temporary adjustment to fixed temperature compensation
● Return the circuit board to the factory or send a replacement board
The flow meter pressure display is abnormal
● The pressure range selection is large and the small field pressure cannot be collected
● The pressure calibration parameters in the instrument have been restored to the factory settings (if the factory is restored, the voltage value in the P21-P25 screen will be 0.0), and need to be re-implanted
The D2 model is slow in collecting pressure and the pressure does not refresh when the flow is not going, press SET to turn the parameters over from the beginning
● In the case of inaccurate pressure display for a long time, it needs to be returned to the factory for recalibration
If the pressure keeps displaying a constant pressure, ask the pressure value and check whether the value is the upper limit of the pressure change, if it is, the pressure change will be small.
Solution:
Temporarily adjust the fixed pressure compensation
Return to the factory to replace the pressure change or calibrate the pressure change