Since I've had a few water system failures at a vacation property it has become important to me to generate an alarm when there is unexpected demand. I've connected an EZIO8T to the pulse output of a water meter and built the following ISY program to count the pulses. Am I in for any surprises? Can the ISY reliably count these pulses? My expectation is that every On to Off transition of the EZIO8T input will trigger a pulse. It appears to work, but I have not tried to calibrate the pulses against the meter yet to get a gallons/pulse figure.

 

If

Status 'Irrigation and Sensors / Sprinkler 1 / Irrigation Water Meter' is Off

 

Then

$water_pulse += 1

 

Else

- No Actions - (To add one, press 'Action')

 

EZIO8T Inputs are normally pulled up to +5V indicating 'ON'. This counter should increment when grounded by the pulse output on the meter.

sperok

 

That should work. Variables are not saved across a power cycle so power interruptions will disrupt the count. My pulse water meter generates one pulse per gallon. High flow meters can be once per 10 gallons.

 

Lee