Using compressed air to clean out the concrete hole.

[CC Solutions]

(10-07-2011 07:06 AM)Ernesto Wrote:  

(10-07-2011 06:05 AM)CC Solutions Wrote:  Yup. The sensor doesn't have the mass the concrete does, and besides, it's insulated by the plastic it sits in. Just a drop of freezing liquid on the metal sensor contacts and who knows what that does to the readings? So if all the probes are reading 68* and the one I had to blow dust out of reads 50*, I have to let that one re-acclimate!

If the sensors electronics are insulated then it would be less an issue, no?

Well, I guess the all knowing rapidrh experts are not going to chime in on this one or my question about static electricity. sigh.......

Actually if you look inside your probe there are either four tabs on the older sensors or four rings on the newer ones. Those metal connections go right to the sensor. If you change the temperature of those connections, you can throw off your readings.