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Almost any better name brand DMM would suffice for testing parasitic draw--even one of the cheapies from Lowe's, Home Depot etc would work for this. The only real "challenge" would be having the right clips or probes on the leads that'll fit the battery cable terminal.
Since most of those draws are way less than 10 amps you're in no real danger of blowing the internal fuse---something I've done a few times which makes those being on-board a great idea.
How well do the clamp on VOMs work for parasitic draw testing? The advantage of course is no disconnection required.
That's an interesting idea----would be ideal if it works. I'm thinking though the parasitic current has to go through the meter because it is or should be less than one amp, perhaps that current can't be reliably read by the clamp?
Originally Posted by seagiant
Hi,
Thanks, I just picked up a Fluke 77-4 Meter....
Got it "lightly" used on E-bay for $90!
Picked up a Fluke carry case for it on Amazon and I should be good to go.
Love my old analog (needle) Triplett, but time moves on!
Yeah but the advantage of the solid state stuff is its tough---without the analog meter movement they can take a bit of a beating and a few drops without breaking.
I bought the automotive set of Fluke test leads . They're great and are handled/stored so much better than the few cheaper DMM's I have. Love's me some Fluke stuff but OMG talk about sticker shock!
That's an interesting idea----would be ideal if it works. I'm thinking though the parasitic current has to go through the meter because it is or should be less than one amp, perhaps that current can't be reliably read by the clamp?
Yeah but the advantage of the solid state stuff is its tough---without the analog meter movement they can take a bit of a beating and a few drops without breaking.
I bought the automotive set of Fluke test leads . They're great and are handled/stored so much better than the few cheaper DMM's I have. Love's me some Fluke stuff but OMG talk about sticker shock!
Hi,
The Fluke 77-4 goes on Amazon new for about $280!
Got mine for $90 and hear sometimes they are on there even lower?
I feel good about mine and even bought an "official" Fluke C35 case!
Never owned a Fluke before but have used them at work for years! (Marine Engineer)
They just keep on rolling.
Was hopuing to find a "need of repair" Fluke at work, but never have seen that?
That Fluke has the most commonly needed features you'll need for automotive use---good price BTW!
If I needed a DMM daily it would be nothing but Fluke, damn the price---reliability and quality the more important aspects.
Another thought---Milwaukee Tools has a very nice set of compatible LARGE alligator clips for grabbing battery posts and terminals. They'll clamp onto a one inch fitting without any problem.
This works great. Carbon pile too. Still accurate as hell. Needed a way to measure at least 30 amps (generator testing). I have a Triplett VOM, but there are times when old school stuff is useful, especially when working on old school stuff.
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