AVOmeter compared to cheap modern digital meter

Jun 26, 2005 6 Replies

How do bargain basement modern digital meters perform compared to the old analogue meters from 30 years ago like the AVOmeter?


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Thirty-odd years ago my friends had AVOmeters. I would look on with some envy. Remember AVOs? I think they were mainly a UK thing. 10 by 8 inches and about 4 inches thick. See this:-

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Today I can buy a regularly stocked item like the super-cheapo single-chip digital multimeter from a UK shop like Maplins for £8 ($8) and that includes the battery. Although Maplins call it a "domestic tester" it is more than just that:



600V-200V-20V-2000mV-200mV plus 600VAC-200VAC 10A-200mA-20mA-2000uA-200uA 2000kO-200kO-20kO-2000O-200O transistor and functions overall accuracy approx +/-0.5% to +/-1.0%


How does something as ridiculously cheap as this meter compare, in terms of measurement accuracy, to an old stye AVOmeter?


AVO is still producing meters and test equipment. Their meggar and ground tester are some of my favorites.

Accuracy and speed is the only differences that I know of. I still have an old Sperry analog meggar. Works fine for the purpose, I have no reason to upgrade it.

Depends on what you want it for.

We have an AVO 8 or two, and keep them for the occasional job where we need to see movement rather than digits changing.

Accuracy is possibly better with the Flukes we also have, but it's all a matter of interpretation and setting anyway, so we tend to keep the AVO for those occasions where it is really useful, such as measuring resistance and for indicative work.

The Flukes absolutely eat batteries, we must have paid their price over and over in replacement batteries!

Pity Philips got out of the testmeter business, their digital meters were far better than Fluke IMO, and they had much larger batteries....

Peter

I wouldn't sell my Salford Selectest Super 50 - but I don't use it! You can often buy those on eBay for a modest price, whereas the Avometers were going for a lot more.

Why do you ask?

N

about 30kg lighter!!

David - who > How do bargain basement modern digital meters perform compared to

I'm a bit of a Luddite but not on DVMs. The only facility I miss is for observing fluctuating DC levels where my Fluke nominal LCD analogue scale is useless. I certainly don't miss those high V batteries for high ohms, the few K loading on circuits rather than Megs and the infuriating mechanical cut-outs that you only had to drop something on the bench and that damned button would jump out.

Diverse Devices, Southampton, England electronic hints and repair briefs , schematics/manuals list on

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Sometimes useful to ignore leakage currents on AC circuits!

N

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