Multimeter Calibration?
What is the best way to check your voltmeter? Some years ago I ran into the problem where the meter read voltages too high when its battery was low. That took a while to discover since it happened...
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I know this won't really help you, but at work we used to send our meters in to Fluke for recalibration. Then I would check my meters (Flukes) against the newly calibrated meter.
This year they decided the cost was too high, so they just bought us new meters.
My old Fluke 77 and my favorite, a 73 still match the new meter, so I am still good. I typically test with 12V, 24V, 120VAC and 240VAC. That covers my useage.
Actually, if you know of someone with a decent adjustable power supply, you could test your meter against that. I know mine is within 1/100th of a volt. That is good enough for my camper. ;)
This year they decided the cost was too high, so they just bought us new meters.
My old Fluke 77 and my favorite, a 73 still match the new meter, so I am still good. I typically test with 12V, 24V, 120VAC and 240VAC. That covers my useage.
Actually, if you know of someone with a decent adjustable power supply, you could test your meter against that. I know mine is within 1/100th of a volt. That is good enough for my camper. ;)
