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WHO USED ALL THE HOT WATER!!! Need a simple temperature data logger ** UPDATE **

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Brumby:

--- Quote from: ejeffrey on August 20, 2023, 06:18:48 pm ---Another possibility would be a microphone or vibration sensor to detect if water is flowing in the hot water pipe.

--- End quote ---

Acknowledgement, apologies and belated thanks to ejeffrey for being the first to present this approach.

Brumby:
Well, I had decided to purchase an Inkbird IBS-TH2 with remote sensor a few days ago, as it was cheap and ready-to-go.  It arrived today.

I've set it up with the sensor simply taped to the hot water line just before the tempering valve.

Let's see what I get...

Brumby:
Interesting.....

First data (exported from App, dropped into Excel and charted. Chart chopped up for ease of viewing)

Labelled points:
A. First power up and check.  Body heat used for temperature increase.
B. (Some time later) Took it outside
C. Attached sensor to pipe. Warm pipe caused increase until reaching equilibrium between sensor and pipe
D. First use of hot water - Washing of hands
E. Subsequent uses - hand washing I believe
F. Filling sink for dishwashing
G. Small spike - hot tap turned on for about 2 seconds, if that
... etc. etc.

No showers or drawing of baths during this period.  I am curious to see how they come up.


floobydust:
Where is the sensor located? On the hot water supply line of a sink?
Scalding guidelines are 49°C (120°F) and others use 60°C (140°F) setpoint to prevent bacteria like Legionella in the tank.

IanB:

--- Quote from: floobydust on August 23, 2023, 09:04:31 pm ---Where is the sensor located?
--- End quote ---


--- Quote from: Brumby on August 23, 2023, 07:44:47 am ---I've set it up with the sensor simply taped to the hot water line just before the tempering valve.
--- End quote ---

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