Philips bench multimeter

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fmaimon
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Posted by fmaimon: Wed. Mar 18, 2009 - 03:12 AM
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I was browsing ebay looking for a Fluke 8050A bench multimeter when I stumbled with this Philps PM2525 bench multimeter. It has slightly better DC accuracy against the 8050A (0.03% vs 0.02%) and a better AC accuracy (0.2% vs 0.5%), according to the datasheets I've found.

Does anyone has any knowledge of this multimeter? Can I trust it? The price is good, so I'm thinking on buying it instead of the fluke multimeter.

Thank you

Felipe Maimon

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Learning and Information, General Electronics
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ArnoldB
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Posted by ArnoldB: Wed. Mar 18, 2009 - 06:54 AM
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Quote:
Can I trust it?
It is impossible to judge a used instrument (this one, but also other ones) entirely from its name and brand, a photo and an eBay description. So there is a risk. There would even be a risk if you could first play with the instrument.

Regarding

Quote:
It has slightly better DC accuracy .. and a better AC accuracy
Like all old instruments, it had (past tense) that accuracy. If it hasn't been serviced and calibrated then the figures in the datasheet don't mean much. It could stillb e in calibration or it could be well out of calibration. Again, this applies to all such offers of old instruments, not only this particular unit.

To give you an indication about the possible age of the PM2525, Philips sold its testing and measuring device division in 1993. Believe it or not, they sold it to Fluke. For a period of time Fluke continued to sell the Philips products as is. But over time they replaced every former Philips device with own devices or withdraw them from the market. The offered instrument still has the original brown Philips front plate, so my first guess would be that it is from or around the pre-Fluke days.

Maybe one interesting thing to know, Fluke hardly knows (or want's to know) about old Philips measurement instruments. It's unlikely you will get manuals or support from them.

Stealing Proteus doesn't make you an engineer.

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fmaimon
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Posted by fmaimon: Wed. Mar 18, 2009 - 12:07 PM
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ArnoldB,

I know that the accuracy isnt as good today as it was in the datasheet, but I was excited by this post by KKP, as the multimeter maintained a pretty good accuracy even after 20 years...

Felipe Maimon

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toalan
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Posted by toalan: Wed. Mar 18, 2009 - 01:14 PM
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I got my fluke on ebay for about the same price, and shipping was more reasonable than the one in your ebay link.

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ArnoldB
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Posted by ArnoldB: Wed. Mar 18, 2009 - 05:44 PM
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fmaimon wrote:
I know that the accuracy isnt as good today as it was in the datasheet, but I was excited by this post by KKP, as the multimeter maintained a pretty good accuracy even after 20 years...
And your point is?

Stealing Proteus doesn't make you an engineer.

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fmaimon
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Posted by fmaimon: Thu. Mar 19, 2009 - 02:09 AM
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The point is that I can get a better multimeter than the ones I have...

Felipe Maimon

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