Products > Test Equipment
how do you calibrate a dvm with 6.5 digits?
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Martin72:
OK, not all... ;)
Multimeter, current clamps, current probes for scopes, oscilloscopes, poweranalyzer, high voltage tester, isolation tester, current shunts, temperature sensors, frequency counters, spectrumanalyzer, data logger/recorder, frequency generators, pressure gauge, test pumps  for testfield.
Crimp tools, torque wrench and soldering stations in the production area.


BeBuLamar:

--- Quote from: Joop01 on May 01, 2023, 10:14:40 pm ---
--- Quote from: Fungus on May 01, 2023, 08:01:14 pm ---Yeah, is this calibration needed for legal reasons or are you just doing it as a hobby?
As noted, these things are designed not to go out of calibration. Maybe all you need is a way to convince yourself of that fact.

--- End quote ---
No, I'm just a hobbyist who happens to have a hobby with equipment which is not available on the market. Your second remark, I could not find specs  for a period longer than 1 year. I think your right.

--- End quote ---

I have sent some Fluke meters in for repair. Some of them are like 10 years old and after the repair they did the calibration and sent me the reports. All of them said in specs no adjustment needed and thus I don't worry about having my meter calibrated every year.
BeBuLamar:

--- Quote from: Joop01 on May 01, 2023, 10:09:03 pm ---
--- Quote from: bdunham7 on May 01, 2023, 07:49:55 pm --- have no idea why you think that nothing can ever be shipped--how do you get your new meters?  If getting a new meter is the only way you can get something without it being smashed, just buy a new meter every year or two, depending on your calibration cycle.  It will be way cheaper, especially if you sell your old one.

--- End quote ---
First question, jump in my car and drive to the reseller. I have a special floor in the car for transporting equipment. Second remark, thanks, figured out the same thing. I have downloaded a service manual for a dvm and what you need to do the job. As said before, that's way above what I want to spend. Second hand somewhere between 60.000 and 75000 dollars, so new will be much more. Also with so much figures behind the decimal point I think you can safely ommit the last two. Also I agree with you that you can buy a new every two years, prices are dropping due to some genius in China who put all in one chip.

--- End quote ---

Let assume that you have the money for the calibration equipment but those eqeipment need calibration too right?
Martin72:

--- Quote ---All of them said in specs no adjustment needed and thus I don't worry about having my meter calibrated every year.
--- End quote ---

Meh.... ;)
Fluke I agree immediately, we have a fluke 87 from 1992, until now every year calibrating without any re-adjustments needing.
My brymen 869s was external calibrated a few weeks after buying it new and needed some re-adjustments while calibrating.
My hint in general:
Buy a "cheap" reference and when something suspicous occurs while measuring, give the meter away for calibrating.
https://www.welectron.com/DMMCheck-Plus-Multimeter-Calibration-Reference
Tony_G:
Just wanted to add that if you're in the US then you can get the unit that Martin referenced from https://dmmcheckplus.com/ - They used to be made by https://voltagestandard.com/ here in WA state but I seem to remember that the volume rate was too low or something like that and they sold off that part of the business.

I have one and have been pretty happy with it over the years.

TonyG
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