Paperless Recorder Common Faults and Solutions

The four common problems of paperless recorders are as follows:

1 LCD backlight is bright, but no character and curve display.

Check that the meter shows that the cable is properly connected.

2 channels do not count, that is to change the channel signal value, the channel display value without any change.

A uses the multimeter to measure the signal on the connection terminal is normal;

B check whether the channel module switch and signal type are set correctly;

C Open the case and check that the channel signal cable is connected correctly. 3 The meter does not work.

A check whether the 220V power terminal wiring of the instrument is correct;

B. Check whether the meter fuse is blown.

C. Unscrew the fixing screw from the meter and pull the watch core out from the front. Check if the power cable between the power supply board and the motherboard is properly connected.

A check whether the signal type setting in the channel parameter setting is the same as the actual access signal type.

B. This channel module switch setting is consistent with the call signal type;

C. Check whether the signal wiring is accurate and whether the signal cable is in good contact.

D in the determination of the above no problem, re-calibration instrument (pay attention to the signal source accuracy must be higher than 0.1%) if the instrument calibration is not normal (can not be calibrated), or calibration is normal but the channel measurement is still not normal, please contact the manufacturer