Producing a sensor report for a given time interval

Configuration
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I want to be able to produce records that confirm my milk pasteurizer is maintaining the proper temperature for the proper duration. What I’d like to be able to do is:

  • start the pasteurizer (manually)
  • tell HA to start watching the temperature sensor
  • have HA note when the temperature reaches a set point
  • have HA note when the temperature has remained above the point for a given period
  • produce some sort of report of the temperature readings during the pasteurization period

I’ve been exploring HA, and think this can be done by creating a sensor that changes state to indicate the beginning and ending of the period I’m interested in, then do a database query to retrieve the sensor readings (and timestamps) during that interval, and save them to a file somewhere.

I’ve searched for any mention of someone doing anything similar, without luck.

Do this sound like a workable approach?

Is there a similar project I can use for reference?

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Hello Mike,

HA Automations can easily do all that. That is not a question.

My question would be if you are using this to create food for someone other than your family, there would need to be a lot of validation and regulation to prove that it is safe. The HA open source license would not cover such a use, that would be on you. So safety wise in the eyes of the govt, IE selling the product produced or whatever, that is a bit foggy. HA has frequent (at minimum monthly) updates that could easily affect your local automations,so you may need to lock in to a version and re-validate when you flip version kind of thing. It starts to get kinda complicated.

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That would be something to take up with the local regulators, if that becomes relevant. That aside, can you offer any advice on what I want to do?