Digital Hot Water Thermometers

JethroMD

I am building a solar hot water system to feed into my conventional hot water tank and I need to install thermometers to monitor how the system is performing. Does anyone know of reliable digital thermometers that will work remotely so I don't have to keep going out on the roof?

Thanks in advance,
j

Brad White

Azel Technologies

has a simple thermistor-based two-channel digital thermometer for about $75 last I checked. Great to compare two points. I would instrument your system from the inside though, regardless. Just the idea of going out on a roof to see something and all...

Andrew Hagen_2

Source temp

Your differential temperature controller should also have a collector (source) temperature readout.

A couple analog thermometers in wells on either side of the storage tank and a rotometer will tell you a lot about what the system is doing at any point in time.

Paul Pollets

Weiss

Weiss makes a very cool soalr digital thermometer with either a 1/2" or 3/4" well. About $150.00

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Home Depot Employee_2

Weiss

The Weiss unit is nice but if you pay over $70 each, you paid too much. 12 at time they cost me $56 each. Not just for outside use, with good lighting or a flashlight they work excellent in a boiler room.

tim smith

digital thermometers

Uni R_2

ourcoolhouse

If you want to log it and monitor it from anywhere, I'd go for this... Constantine could better comment on the suitability of this solution - not cheap at just over $500 IIRC, but it has the flexibility to monitor easily anywhere you want so you can know what's happening, even if you aren't there... and no piping requirements if you use contact sensors.

http://www.ourcoolhouse.com/monitor/monitor.htm