How to judge if the ultrasonic flow meter works properly ?

 

If 'E' is displayed, the current loop output is over-ranged. Increase the range setting in M57 will make the 'E' letter disappear. If you do not use current loop output, you may ignore this error.

 

If 'Q' is displayed, the frequency output is over-ranged. Increase the range setting in M69 will make the 'Q' letter disappear. If you do not use frequency output, you may ignore this error. 

 

If an ‘H’ flashes on that place, there could be poor signal received. Please refer to the chapters on diagnosis.

 

If 'G' is displayed, the flow meter is adjusting system gain. This is normal as far as it does not last long time. 

 

If an ‘I’ is displayed, it means that there is no signal detected.

 

If  'J'  is  displayed,  there  is  hardware  problem.  Turn  off  the  power,  then,  turn  on  the  power again. If the problem remains, refer to Chapter 5 for diagnosis details.