Any one here know where I can get some multimeters recalibrated? I have a Greenlee and a Fluke , both high end meters that are reading incorrectly, like by 50%! Really got me into a jamb, before I figured out they were way off! And what is the cost? I just picked up a real nice Greenlee DM 60 for cheap, but would like to get my others fixed, if it isn’t too expensive! Thanks in advance… Bones
Just asking & curious, I have 2 Fluke's upper 500's what where you measuring? Where both the other two off the same amount ?
We get calibration done all the time. All our stuff is calibrated at specific intervals. There is quite a big network of people who do this for industry. No use to you as I’m in the UK. Just have a google in your local area, there’s bound to be someone who does it. Quick google and here’s someone in Tulsa https://www.crossco.com/locations/t...ign=googlemybusiness-Tulsa&utm_medium=organic
If they are that far out, it is unlikely to be calibration, but more likely a problem somewhere else in the circuit, maybe the power supply. Some meters have trimpots inside (small variable resistors), which will affect one or more ranges. If you can get a circuit diagram for yours, it will be on there, something like "VR 3- ohms". If you can post a circuit diagram here, I may be able to pinpoint it for you. It is usually done with a couple of low tolerance resistors (0.5-1%) as a reference. You may find that getting them repaired/calibrated may be a very expensive exercise, and sometimes it is cheaper to buy a new meter.
As 36Roadster alluded to, you likely don't need calibration, you need a repair service. Most Calibration labs will send the unit off for repair if it is unable to be calibrated. I have used Precision Calibrations in Tulsa and Tran**** in KC. Both should be able to help you out. https://precisioncalibrations.com/services/ https://www.tran****.com/calibration-services/lab-locations
I've got several of those still in the package. I probably should take the batteries out of them until my Fluke & Beckman meters die.
No, I was at a rv camp and the owner , a friend of mine, was having a problem with his electrical system so I whipped out my trusty Fluke meter , that I bought used, and proceeded to to test the voltage. I was getting crazy readings , like 83 volts and 160 something like that that made no sense! So he called an electrician friend of his and he check it out and the voltage was 120/240! So we put my meter back on it and it read way low again. My Greenlee , that read low was a similar situation. I guess that’s why I got a good deal on them both used! I’m not concerned if they are off a volt or two, or a couple of ohms, but I would like them in the ball park. I scored a Greenlee DM60 , yesterday for $15 that looks like it’s new, it seems to work just fine as I tested it on a battery and my house current. But I hate to throw the other two away, if they can be brought back to life , reasonably! That way I could keep one in my truck, one in my motorhome, one in the shop! I would like that, because whenever I need one, it’s always somewhere else! Just happened to me , two days ago…..again! lol Bones
I don’t remember if they were the same, but close, way off! Like I mentioned, we compared my Fluke to an electrician’s newer Fluke and it was way off. Several year later, I ran into the same situation with the Greenlee on my home generator! I bought both, used somewhere, actually don’t remember but a long time ago. I changed batteries in them, didn’t help. But I don’t think the batteries come into play , much on the voltage readings. I don’t learn very fast, I bought another Greenlee DM 60 yesterday, so I’m back in business……for a while! But hate to chunk the other two, “ quality “ multimeters! Bones
Wouldn't know. I just use the harbor Freight $4 meters. Always accurate, dirt cheap if ever fails which none have.
Replace the batteries. I have a collection ranging from fluke’s finest to Home Depot’s dirtiest as I use them every day for work. The one thing they all have in common is that they get senile and read erroneously when the batteries are low.
Digital meters will often give you erratic readings when used near ignition systems, especially the solid copper type. If you are testing next to a running motor you may get these readings. It's good to have an old ****ogue (moving coil) type meter handy for this kind of work, they are not affected by this.
Well, that’s what I thought! So, I figured it had to be me! Different leads for each! This happened several years ago, and a year or so apart! But it’s kinda hard to screw up a DC volts reading, or AC even less! Plus I checked it with the electricians meter! Had him use mine, same screwed up reading ! I had actually bought a cheap ****og meter to use, but the one I bought, I don’t like the scale didn’t have the 1 to 20 DC volts , kinda hard to get an accurate 12 volt reading . Kinda hard to tell 13.7 from 14.2! Fast forward to yesterday , I saw a Greenlee DM-60 for sale locally, for $20, me being cheap offered $10, she said ok! I met her and the unit looked brand new and measured a brand new AA battery at 1.65 volts. So I gave her $15! Lol This purchase got me thinking about my two high dollar units laying around collecting dust! I think I changed batteries, but it has been several years! If I can find them I may change batteries in them, and test them against my new unit! Bones
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