Question about Extech AC/DC Clamp Meter 400 Amp, Dual Input
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Posted on Jan 02, 2017
here is the web page for this unit. http://www.banulista.us/tools/Electrical-163105.html
it is adjustable and has adjusting screws to reset readings but you have to have a power supply that is accurate to test it with, to reset ohm values you may use a resistor from radio shack to measure resistance. get a 5 ohm resistor and a 10,000 ohm resister with a gold 5% band to test the unit. If you need help setting up the testing for amps and ac and DC voltages reply to this post and I will give you instructions on how to set the meter to read within .2 tolerance.
Posted on Mar 17, 2010
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