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why does my laser thermometer give me unsteady readings in my HVAC class?
whenever i try to take temperature readings on my suction line or discharge lines on a/c units i never can get a steady temperature reading. the lines are copper. my instructor said that he has the same problem when he uses these types of thermometers. is there anything i can do to the copper lines (paint, coating, tape etc.) so that i can get a steady temperature reading when i try to take the temperature of the lines. i need to calculate subcooling and superheat.
You laser measures the high temperature between you and the pointed area. Alway take your temperature with a contact probe.
Try one of these;
http://us.fluke.com/usen/products/ProductDetail.htm?cs_id=9472%28FlukeProducts%29&catalog_name=FlukeUnitedStates&Category=PRTP(FlukeProducts)
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 Milwaukee 2277 21 M12 Laser Temp Gun Hvac Kit W 1 Bat  US $292.86
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 Milwaukee Laser Temp Gun HVAC Kit W 1 Battery 2277 21 US $270.00
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 2277 21 Milwaukee M12 Laser Temp Gun for HVAC R US $265.99
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 HVAC VENT GRILL 1990 1994 ECLIPSE TALON LASER US $7.49
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