Greenlee DM 820A Review

This is a review of the Greenlee DM-820A multimeter for use in hobby electronics projects primarily related to amateur radio.
A pdf document of this review: github.com/TomWilkinson/Multi...
his review was produced to help you decide if the Greenlee DM-820A multimeter will fit your purpose and budget. This is part of a series of multimeters reviews.
Here is a link to the DMMCheck Plus site I mentioned in the video: dmmcheckplus.com
A good multimeter for hobby electronic projects should be able to measure millivolts, volts, microamps, milliamps, amps, ohms, nanofarads and microfarads.
If you want to measure picofarads, nanohenry, microhenry or reactance you will need a LCR meters. I cover the two LCR meters I own in another review.
I am not a professional, I am a hobbyist. This review is not sponsored; I bought this multimeter with my own money. I only used and tested this multimeter in CAT I and CAT II environments. I do not have a way to review or test the safety of this meter. I leave the CAT III and CAT IV environments to trained and licensed professionals. It may seem like I am a Fluke fan boy, but I recognize their flaws along with their advantages. There may be unintended mistakes and/or errors in this review.

[@JJ-yh9kf]

Thanks for revealing,that there is no beep for diode function.I need that.

[@zoom_h2625]

Moin Moin, the certificate of conformity should be for the EU and is needed for the CE marking. Regards from German.

[@N8FDY]

Thanks for correction.

[@johnlucier8572]

Have one great meter. Does what I need it to do. Great meter....

[@WvMnts]

Thank you. I’m still lost at what to get for dusty moist underground conditions but accurate voltage. Bc we run the fluke i1010 amp clamps.

[@N8FDY]

I looks like you need an IP67 rated meter. I have only reviewed two of those that I could recommend, Fluke 87V MAX and Keysight U1242C. The i1010 manual recommends "Can display 1 mV (0.1 mV preferred)" and "Accuracy ≥0.75%". The Fluke 87V MAX can display 0.1 mV DC up to 600 mV and display 0.1 mV AC up to 600 mV. The 87V MAX accuracy specifications for DC mV is 0.1%+1 and for AC mV is 0.7%+4. The 87V MAX meets the minimus requirements. The Keysight can display 0.01 mV up to 100 mV and 0.1 mv up to 1000 mV DC and AC mV (you must give up external temperature measurements and to use the accurate mV range [see my review]). The DC accuracy specifications for mV is 0.09%+2 and for AC specification for mV is 1.0%+3. The U1242C meets all but the AC mV accuracy requirements. Take a look at the two reviews. Also take a look at Dave Jones from EEVBlog EEVblog #66 - Death & Destruction of a Fluke Multimeter th-cam.com/video/qlA7-fh5nDQ/w-d-xo.htmlsi=QgW5styoLodmYlgG, the 28ii is the same is the 87V MAX.