Products > Test Equipment
Poll: Handheld meters with minimally-annoying auto power off (APO)
Fungus:
Following up on the handheld-vs-benchtop meter debate...
Let's make a list of handheld meters that will auto-power-off silently then wake up in the same mode with a single button press, ie. they aren't annoying to use on the bench all day long.
:) Meters that DO this:
Brymen: BM857 BM789 BM235 BM869s
Caveat: They lose some settings, eg. manual/autorange mode and min/max/rel values (but if you're doing a long min/max session you need to temporarily disable APO anyway).
:( Meters that power back on with a button but lose the secondary function setting (eg. they APO in continuity mode then come back on in Ohms mode):
Fluke: 87, 187, 189, 289
:-\ Meters that don't have APO (or can disable APO permanently) and have a really long battery life (1000 hours or more):
Fluke: 27FM 37FM
Other: DT830 ("Harbor Freight")
:( Meters that beep when turning off and/or require you to turn the dial to wake them up:
Fluke: 101
Kaiweets: HT118E
>:( Special hell: Meters that beep twice - once to warn you they're about to APO then again a minute later when they actually do it.
Aneng: AN860 AN870 V04A AN8008
Surpeer: AV4
Fungus:
I'll be testing my meters today, feel free to post results for other models.
Edit: Yes, there's meters that allow you to temporarily disable APO by holding down a button at power on. I haven't included those because that's annoying too. I don't think it excuses them from not doing it properly.
sonpul:
BM789 does this. off silently.
Every day, I do not turn off the DMM several times and many times a day I turn it on simply by pressing the yellow button.
nctnico:
--- Quote from: Fungus on March 30, 2023, 03:03:32 pm ---Following up on the handheld-vs-benchtop meter debate...
Let's make a list of handheld meters that will auto-power-off silently then wake up exactly where they were with a single button press, ie. they aren't annoying to use on the bench all day long.
--- End quote ---
Any meter that turns of automatically is annoying for bench use. The same for meters that run out of batteries. >:D I learned that a long time ago.
Fungus:
--- Quote from: nctnico on March 30, 2023, 06:41:15 pm ---Any meter that turns of automatically is annoying for bench use. The same for meters that run out of batteries. >:D I learned that a long time ago.
--- End quote ---
The point is that some are much more annoying than others.
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