Products > Test Equipment
Poll: Handheld meters with minimally-annoying auto power off (APO)
BillyO:
--- Quote from: Psi on March 31, 2023, 04:04:39 am ---Auto power off doesn't annoy me anywhere near as much as default to AC current. :Rage: |O
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None of the meters I mentioned above do that. They either have a separate position for AC/DC or default to DC.
I'm too lazy to go through the rest of my HH meters, but I think at least one does what you say. Apparently I don't use it much.
alm:
The Fluke 87III works the same as the Fluke 187 and 189: any button press wakes it, but it reverts to the primary function on that dial position.
The 87III does have AC and DC current sharing a dial position, but DC is the default unlike the latest 87V, so it's not been a problem for me. It can just be slightly annoying when using continuity or manual ranging. I rarely use the capacitance function on a multimeter, so haven't had it power off while measuring capacitance.
On the 187/189 you can set the power off time to up to 24h, though you'll want to use rechargeable batteries then.
RAPo:
Aren't we making things needlessly tricky: there are three categories of multimeters, analogue, those where APO can be turned off and those that can't.
I prefer to choose a meter that can be turned off.
BeBuLamar:
--- Quote from: alm on March 31, 2023, 09:12:23 am ---The Fluke 87III works the same as the Fluke 187 and 189: any button press wakes it, but it reverts to the primary function on that dial position.
The 87III does have AC and DC current sharing a dial position, but DC is the default unlike the latest 87V, so it's not been a problem for me. It can just be slightly annoying when using continuity or manual ranging. I rarely use the capacitance function on a multimeter, so haven't had it power off while measuring capacitance.
On the 187/189 you can set the power off time to up to 24h, though you'll want to use rechargeable batteries then.
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But would the rechargeable batteries would last for more than 24hrs?
alm:
--- Quote from: BeBuLamar on March 31, 2023, 11:53:14 am ---But would the rechargeable batteries would last for more than 24hrs?
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The data sheet specifies battery life as 72h typical on alkaline cells, and modern NiMH batteries have more usable capacity than alkaline (flatter discharge curve). So yes, easily. But obviously there's not much point in having a battery powered meter on for 24h unless you're logging something. The point is that you can set it to long enough so it won't turn off while you're working if you don't mind recharging the batteries every couple of months or so.
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