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What type of temperature guage

73Wagoneer on Sun September 07, 2008 6:51 PM User is offline

Year: any
Make: any
Model: any

I have used two different types of guages to measure vent temp and get different readings from both, was wonder which one is the best to use.

The infared non contact one verses the dial guage with long probe, the infared one always give a colder temp about 20 degrees colder, even on different vehicles


Spector on Mon September 08, 2008 10:25 AM User is offline

Using a non contact thermometer will not accurately measure air temperature it is actually measuring whatever it is pointing at in this case you are checking the temperature of your duct work not the air coming from it so a mechanical dial or mercury thermometer you put in the air stream is considerably more accurate if it is any good to start with and you can tell that by putting it in some ice water.

Edited: Mon September 08, 2008 at 10:31 AM by Spector

TRB on Mon September 08, 2008 10:41 AM User is offlineView users profile

Just to add what has already been suggested. You may need to calibrate the dial thermometer also.

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73Wagoneer on Mon September 08, 2008 9:52 PM User is offline

thanks

uunfews on Tue September 09, 2008 5:38 PM User is offline

I use a digital thermometer w/ a probe that is usually sold as a weather checking device. Probe goes into the vent and wire it out to the front of the condensor that way you can see both temp readings at the same time.

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