Alarm if sensor not triggered for XX hours?

[lmm1967]

I'd like to get an alarm or alert if a sensor (ATO Optical sensor in this case) has not been triggered or changed for more than 6 hours.

Reason:

In the past week I've had my ATO optical sensor not change states when it was out of water. This caused my ATO to never kick on and run my sump lower than I prefer. Twice this has happened and I'll do my best to address the issue - but I'd really like an earlier warning that what i have now.

So what I'd like is a safety net warning alerting me if the ATO pump has not run in the previous 6 hours - OR that the sensor has not been in an Open state for more than 6 hours.

 

[SuncrestReef]

Here’s one way to do it using virtual outputs as a timer:

[SensorClosed]
Set OFF
If ATK_LO CLOSED Then ON
Defer 360:00 Then ON

[ATO_Pump_Off]
Set OFF
If Output PumpName = OFF Then ON
Defer 360:00 Then ON

[EmailAlm]
Set OFF
If Output SensorClosed = ON Then ON
If Output ATO_Pump_Off = ON Then ON

If you’re not familiar with virtual outputs, see my tutorial:

Neptune Apex Programming Tutorials, Part 5: Virtual Outputs

Part 5 of our Apex Programming Tutorials. This one is on Virtual Outputs.

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