Multi-meter

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Do you also use a bit of dielectric grease on the push contacts, to retard corrosion?
A person with a dirty mind would have a lot of fun, with enlarging bulging bannannas and greasing push in terminals. . Christopher A. Young Learn more about Jesus www.lds.org . .
I have noticed on my HF meter (one of the bigger ones with the rubber slip-on shell) that the banana plug interface between the leads and the unit are the cause of high resistance readings when shorting the leads (upwards of 10 to 15 ohms at times, and it is inconsistent). My guess is that whatever coating they use develops a skin, which messes with the readings.
The solution is to *gently* stick a jewlers screwdriver into the banana plug end to slightly bulge out the banana, causing it to make a more positive contact with the jack it goes into; this will return the shorted lead resistance back down to the 0.4 or so Ohms that I usually expect.
Jon
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On Mon, 1 Jul 2013 18:40:19 -0700 (PDT), snipped-for-privacy@my-deja.com wrote:

Google still finds them under Contact East, but I also found
"While some of you know us as Stanley Supply & Services, others still remember us as Contact East or Jensen Tools. For more than 50 years, we have been a leading supplier of products and services for the electronics MRO industry and maintenance, installation and repair professionals. Although our name changed to Stanley Supply & Services in 2006, we continue to focus on providing your business with high-quality, brand-name products and services. We're proud to be a division of The Stanley Works (NYSE: SWK) and we're excited to offer you some of Stanley's innovative products and brands."
After all this, since I don't know the Stanley Tools logo by memory, I still can't tell if that who is talking here. I think so.....

I was so happy when I got a meter that measures temperature, but it's been years and I havent' needed it yet. Still, I'm glad I have it.
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On 7/1/2013 4:23 PM, Pointer wrote:

replacement, like the 1st time. However, they don't have part for it any more. So, I looked around and for $76 I got this Triplett from Amazon: (Amazon.com product link shortened)72768150&sr=8-2&keywords=triplett+multimeter It's nicer than the old Fluke because it is true RMS on the AC scales. It also comes with a temperature thermocouple. It also shuts down, if you forget it on. And does many more things.
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Buy a slightly more expensive HF unit.. Cen-Tech - item#98674 ..
It also has Temp, RH, sound, and light measurement capabilities.. (very handy).
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wrote:

And capacitance and humidity!!
Do you think it has auto-polarity even though it doesn't say so?
http://www.harborfreight.com/5-in-1-digital-multimeter-98674.html
I've been using analog meters to check capacitance. All I can do is watch the resistance go from very low to quite high as the cap fills, then reverse the leads and watch it happen again. I'm figuring this would show a shorted or open cap. (except the small ones fill so quickly I can't tell if it's open or not.) But I certainly can't tell if they are the marked value.
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all small electronic components. It will do capacitors to about 100 pf or so. It is just the electronics without a case,but the price is right shipped direct form China for about $ 25.
Ebay number 221197915142
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On Fri, 5 Jul 2013 11:34:29 -0400, "Ralph Mowery"

http://www.ebay.com/itm/221197915142?ru=http%3A%2F%2Fwww.ebay.com%2Fsch%2Fi.html%3F_from%3DR40%26_sacat%3D0%26_nkw%3D221197915142%26_rdc%3D1
Certainly is an interesting page. Keep scrolling down to see the whole thing.
It's times like this I wish I were a pro just so I could buy all this test equipment.
Just like I wish I had my own business so I could buy lots of busilness equipment, color laser printers, etc.

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In the Navy in the 1970s, our two main meters were the AN/PSM-4B and the Simpson 260.
Asked what the difference was, I used to say,
"Hold one in each hand at shoulder height and let go. The PSM-4 case will not crack, and the Simpson will still work."
--
Wes Groleau

Those who make peaceful revolution impossible
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On 7/1/2013 1:23 PM, Pointer wrote:

Get this one: <http://www.circuitspecialists.com/dm620.html
For your "free gift" you can select a second meter.
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Pointer wrote:

I'd cry like a baby if the Simpson 260 I've owned for over 50 years gave up one me.
I treat it like a baby and religiously return the selector switch to the 1000 volt setting when I'm done using it.
But, I see there are lots of them on eBay for prices around $50. Chances are they are probably in good shape.
--
Jeffry Wisnia
(W1BSV + Brass Rat '57 EE)
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I have one that is over 25 years old and would hate do with out it. I don't use it very much as I usually use a Fluke digital, but there are things that I would not like to use any other meter for. The Simpson still checks out for calibration.
I also try to turn it to the highest voltage scale when I am done with it and make sure the switch is in the off position. Not that it really cuts it off, but jprobab ly puts a short across the meter so it will self dampen when in motion.
If you need a schematic or the calibration for one look at this site.
http://www.simpson260.com/downloads/downloads.htm
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On 7/5/2013 12:34 PM, Ralph Mowery wrote:

it on the highest current reading, not voltage. That will put a low resistance shunt across the movement and provide the best damping for the movement.
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For the meters that did not have the off position the highest current range would provide the best dampning.
I just found it beter to put them in the highest voltage range so if someone picked up the meter and put the probs across something with voltage on it the meter would not likely be dammaged Jeff probably did that for the same reason.
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