Herpstat Question

My thermostats read what the heat tape does. I still have to set it higher than the temps I want because it'll lose some heat between the tape and what the tub will actually read. I set my Herpstat for 95 to get a 92 degree hot spot inside the tubs. I lose 3 degrees between the heat tape and the inside of the tub's surface.

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Originally Posted by LGray23

I have mine set at 106 to achieve 90 in my rack...I'd set it to about 93 and work from there and adjust as needed.

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Having to set a thermostat for 106 to get a 90 hot spot sounds a little off... :confused:

Is this a rack system? What kind of setup?

I run all my stats at 95 to get about 92 in the tubs. Then again it is a spare room with the a/c vent only cracked a little.

Op let me clarify my understanding here.

You have heat tape and a herpstat probe on the tape correct? The temperature measured is directly off the tape correct? They should be the same or very close. You should not be seeing much of a difference most of the comments are the temp from inside to outside the tubs in a rack.

IR guns are very poor at measuring shiny things basically it reflects off and measures something else (for example the ceiling) try placing a small bit of plain brown masking tape on the heat tape give it some time to warm up and measure that not the tape. If you are still seeing more than a degree maybe two (the accuracy of the gun is likely +/-2ºF) there is something wrong and I'd email Dion at spyder robotics he is very very good to deal with.