Possible new DMM test, @#$%@# cheap meters.... - Page 1
Forum section: electronics / testgear

author: joeqsmith
author_rank: Super Contributor
timestamp: June 21, 2023, 08:13:37 pm
content: Working outside today and reminded that if I had a way to simulate direct sunlight, I would have added to my testing. Second photo was after maybe 20 seconds from moving it inside the trailer.

author: Martin72
author_rank: Super Contributor
timestamp: June 21, 2023, 08:50:49 pm
content: Reminds me of my "fail of the day", as I forgot a Fluke87 on the top of a resistive loadbank...under power...Display was black..But after cooling it down, everything was fine...

author: xrunner
author_rank: Super Contributor
timestamp: June 21, 2023, 09:15:20 pm
content: Must be cheap - they didn't even give the poor thing a name or model number.

author: Martin72
author_rank: Super Contributor
timestamp: June 21, 2023, 09:24:25 pm
content: Quote(Michael Caine in Austin Powers)

author: Fungus
author_rank: Super Contributor
timestamp: June 21, 2023, 09:47:12 pm
content: Quote from: xrunner on June 21, 2023, 09:15:20 pmI'm guessing it's at the bottom, in the cropped off area below the dial.I'll also bet it has the digits 8, 3 and 0 on the number.It could either be the UV or the IR that killed it. How long was it out in the sun?Edit: I guess if it was the heat then it could die in a few minutes.

author: joeqsmith
author_rank: Super Contributor
timestamp: June 21, 2023, 09:55:18 pm
content: It's this exact meter. Still somewhat functional after 10+ years of use. I am waiting for it to die.

author: Fungus
author_rank: Super Contributor
timestamp: June 21, 2023, 10:01:02 pm
content: Quote from: joeqsmith on June 21, 2023, 09:55:18 pmSonotan "830".

author: joeqsmith
author_rank: Super Contributor
timestamp: June 21, 2023, 11:16:13 pm
content: It still has the same 9V battery in there from when I made that video 4 years ago. Wonder if it has leaked yet.

author: xrunner
author_rank: Super Contributor
timestamp: June 21, 2023, 11:27:55 pm
content: Quote from: joeqsmith on June 21, 2023, 11:16:13 pmIt's still working so the battery contacts must not be destroyed. Therefore: no Duracell.

author: BillyO
author_rank: Super Contributor
timestamp: June 21, 2023, 11:46:55 pm
content: I'm guessing that will happen with most DMMs given enough exposure. 100,000+ lux is a bit much for most LCD panels.

author: GuidoK
author_rank: Regular Contributor
timestamp: June 22, 2023, 02:03:37 am
content: I didn't even know LCD's were affected by sunlight/uv light. But I don't live in a particulairy sunny climate.But it would be interesting to see if different brands/models react differently.Just like the cold temperature test where some LCD's just became unresponsive where others just seemed to keep working fine, like in that keysigth U1282a where the display wasn't able to update anymore. Not that I would experience those type of temperatures here, but interesting to see nonetheless.

author: tautech
author_rank: Super Contributor
timestamp: June 22, 2023, 02:28:55 am
content: Is UV/sunlight or just heat the culprit ?I can feel another Joe test coming on......

author: Fungus
author_rank: Super Contributor
timestamp: June 22, 2023, 06:25:01 am
content: Quote from: tautech on June 22, 2023, 02:28:55 amThe sunlightisthe heat (IR).