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1.LCD display is not bright
Possible causes:Instrument or LCD Screen power supply failure.
Solutions:Check whether the power supply is connected or not, and check whether the power
supply wire of the sensor is connected in the wrong direction.
2.No current output
Possible causes:It could be a fault in the current module or a wiring fault.
Solutions:Please check that the current output wiring is correct. Please refer to the wiring terminal
diagram in the instructions.
3.The output current of the transmitter does not match the display current.
Possible causes:Current output may not be correctly calibrated.
Solutions:Please re-calibrate the 20mA output.
4.The instrument shows " "
Possible causes:The transmitter and sensor are not communicating properly.
Solutions:Check that the sensor signal cable is correct. Please refer to the wiring diagram in the
manual.
5.Measurement shows the result as full scale SLOP.
Possible causes:May be sensor was contaminated, damaged or measured value exceeds
measurement range.
Solutions:After cleaning the sensor, put it in a medium with low concentration to observe whether
the meter works normally. If the meter works normally, the concentration of the measured
medium may exceed the range.
6.Measurements display results fluctuate greatly.
Possible causes:Sensor wiring error or low display rate setting.
Solutions:Check wiring or increase display rate appropriately.
FAQ