where to put probe?

[JohnNJ]

That's interesting.

My question - and I am not an electrical engineer - is that if the probe is taped to the Flex, and the aluminum tape is conducting heat from the tape around the probe, and there is at least the slightest bit of heat lost to the air via the conduction through the tape, how would there be false high readings? Is it because the probe is surrounded by heat, whereas the surface of the flex is losing heat more quickly to the air?

I take my temps from the tub itself, though. The probe on the flexx is just to get the temps where they need to be. So if I get a false high reading of 92 on the flexwatt itself, but the hot spot inside my tubs are 85 - it doesn't really matter.

From Spyder Robotics (Herpstat) owner:

"The reason aluminum tape shouldn't be used is because it acts like a heat sink to the ambient air. It gives the probe more surface area to the airflow going across it which makes its readings lower than if you use standard tape. Also the metal can act as a antenna for electrical interference with the data the sensor is providing (less common). Also if you are using aluminum tape on flexwatt you could be generating a hot spot that might be prone to failure. Plus its conductive so it could pose a shock hazard or increase the fire hazard should the tape ever fail.

-Dion"