How to setup a zero point correctly ?

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There exists a ‘Zero Point’ with certain installation which means the flow meter will display a non-zero value when the flow is absolutely stopped.
In this case, setting a zero point with the function in window M42 will bring a more accurate measurement result.
 
Make sure that there is no liquid running inside the pipe, and then run the function in window M42 by pressing the ENT key.
After setup ,please do not forget to go to M26 to solidify the setup .

Once the zero offset has been set ,it will remain in the system until it is deleted or a new zero offset has been set .
We recommend to make new zero setting at each new measurement when possible .