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Re: Original 1-wire Temp Sensor
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Posted by Bill - WEL0043 on Monday, 19 July 2010, at 11:46 p.m.,
in response to Original 1-wire Temp Sensor, posted by Benito Loyola
Benito, send me an email and I'll point you to some images that illustrate how how I installed all of my sensors on pipes.
I had to 'roll my own' because when I installed my sensors Phil didn't offer what he does today.
I don't have condensation caused corrosion problems because I heat shrink tubed all connections, using heat shrink tubing with built in glue.
If I was starting from scratch today, I'd purchase his plastic encapsulated temp sensors ($15 ea) for air temp sensing, and either one of his stainless steel temp sensors for strapping to pipe.
I follow a number of key principles to get accurate fluid temperature measurements:
1. Look for metal pipe or fittings to take temperature from (versus a section of plastic pipe).
2. Make sure there's a good mechanical fastening of the temp sensor to the pipe.
3. Use thermal grease (I used to use artic epoxy but changed later to easier to use thermal grease along with using zip ties to ensure strong mechanical fastening).
4. Wrap the sensors wires a number of turns around the pipe t reduce influence of ambient air coming in through the leads.
5. Signicantly wrap the pipe temp sensor in a lot of insulation.
All of my temp sensors (pipe and air) are still operating today without problem. They were originally installed in 2007.
Hope this helps.
Best regards,
Bill
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