The manufacturer told me that flow sensor was: ‘1.037 pulses per lpm’.
I’m not sure exactly what that means, I had expected the unit to be L/pulse.
I’ve used this value to set the Flow Pulse Rate but I have very high reading.
Would anyone know what is the correct flow rate setting for this sensor ?
LPM means liter per minute, which does not provide enough information about the number of pulses / clicks.
‘1.037 pulses per lpm’ has the wrong unit — it should be pulses per liter or something like that. I think 1.037 pulse per liter sounds quite slow — a flow meter like this generally produces a lot of clicks. For example, this sensor: https://www.amazon.com/Uniquers-Flowmeter-Counter-Plastic-Threaded/dp/B075VLZVDM
which is similar to yours, specifies the pulse per liter is:
Pulses per Liter: 450
or in otherwords, liter per pulse is 1/450.