megohmeters

[Pascone10]

looking for my first megger purchase here. will be used on pm's and occasional diagnosing troublesome units, you know the usual stuff lol..

i have fluke meters but for the amount of times ill be using it cant justify that price.

in previous threads it seems most of the community here uses the supco...

i just saw this http://www.extech.com/instruments/product.asp?catid=35&prodid=144

anyone use it? what do you guys think? beachy you were going to get an extech meter right? did you how do you like them as a manufacturer?

i like this because i can select the output voltage..... has low ohm capabilities (dont know what i need the low ohm for lol)

any help?

[fcs]

I've never had great luck with ExTech holding up to field use, But I understand they've been sold so who knows you can beat their pricing so I always kept eying them.

When I was looking at them A Friend of mine whose an Electrical Eng. recommend this one said it was a good "Bang for the buck"
http://www.amprobe.com/cgi-bin/pdc/viewprod.cgi?pid=1847&tid=1&type=elec

[Pascone10]

that a little up there too for the amnt of use.. i hope me being cheap here isnt going to bite me in the a$$ lol well see....

worse comes to worse if im not feeling confident on the extech ill get the supco. guys here like them....

thanks for the reply!

[fcs]

Ya I know what you mean.

If go with ExTech let me know what you think and how it holds up.

The good part is here Grainger is great up exchanges if you up sale.

[Pascone10]

The good part is here Grainger is great up exchanges if you up sale.

whats that mean lol??

I know Graingers..... I'll deff. let you know if i get it. im actually leaning towards it but i need someone here to give me that extra push.

[fcs]

Up sale is when say, You by a meter for $100 and after say 6 months it just found to be Junk. They'll give you full credit if you a buy a replacement say valued at $150.

In short full credit if you buy up in price

[xgfreon]

*Pushes Pascone10

[Pascone10]

Up sale is when say, You by a meter for $100 and after say 6 months it just found to be Junk. They'll give you full credit if you a buy a replacement say valued at $150.

In short full credit if you buy up in price

wow i had no idea.. ill look into that. thank you. in that case why not try it right??:D:p

[Pascone10]

*Pushes Pascone10

huh?

[fcs]

I've done a far amount of business with them this store here has been great.

[beachtech]

lmao

who's looking at extech now :p :p :p

[fcs]

I know like I said they kept suckering me in

[ryand]

This is what I have and I love it. Its pricey but worth it. I bought mine from newark for 200 it was refurbished
http://us.fluke.com/usen/products/Fluke+1587+1577.htm?catalog_name=FlukeUnitedStates&category=TOPINSUL(FlukeProducts)
http://www.newark.com/jsp/search/browse.jsp;jsessionid=ZDQZRCEWBS2WMCXDUZ0G4IQ?N=0&Ntk=gensearch_001&Ntt=refurb+fluke&Ntx=&suggestions=false&_requestid=329966

[Pascone10]

ok well its ordered... well see.

[WhoIsThat?]

FWIW, for the price of two cups of coffee you can buy 100 ea., 10Meg, +/- 10%, resistors from Allelectronics or some such place and solder them in series to make a 1000 Meg, +/- 1%, calibration resistor. Shipping is extra $.

[xgfreon]

huh?


you said you needed a push to buy....i was pushing

[Pascone10]

FWIW, for the price of two cups of coffee you can buy 100 ea., 10Meg, +/- 10%, resistors from Allelectronics or some such place and solder them in series to make a 1000 Meg, +/- 1%, calibration resistor. Shipping is extra $.

ok explain how to do this please... i need 100 of the resisters? im a little lost.

[WhoIsThat?]

Here's a place to get the resistors
http://www.allelectronics.com/make-a-store/item/291-10M/10-MEG-OHM-1/4-WATT/1.html

100 of these wired in series gives 1000 Megohms, at a tighter tolerance than any single resistor.

This is probably cheaper than buying a single precision 1000 Meg ohm resistor, even if they sell them in QTY = 1, which I doubt. It might take you an hour to solder these up.

You'll need some kind of container to hold this composite resistor and you should probably seal the resistors with shellac or varnish to prevent changes in RH from changing its value.

With your meter's accuracy being +/- 3%, if you decide to buy a precision resistor to check your meter's calibration the accuracy of the resistor should be +/- 0.3% or better.

[Pascone10]

so i got this thing today....

am i using it wrong? i have one lead on the wire for run and one on the copper linset connecting the compressor. ( i know to get an accurate reading i need to go right to the compressor but i should still get a resistance reading with the wire no?

anyway this is not hooked up to anything just a unit in my garage..

i disconnected the compressor from the cap (single phase) and the meter beeps and flashes everyonce in a while a reading but not long enough to read it.... most of the time just reads 1

this is a 240v condensor. i megged on 250v and 500v......

also checked winding with FLUKE (lol) and extech ohms are similar and winding check out fine that way....

any ideas fellas?

[cuervo]

I also am in the market for a megohmeter and don't want to spend much. I found the Fieldpiece SMG5 for about $110. Here's a link to fieldpiece's manual I'm not sure if it will help you out with your meter.
Look at bottom right hand chart:
http://www.fieldpiece.com/Manuals/OpmanSMG5v08.pdf

Hope it helps. Let me know how yours is working out.

[DOGBOY]

so i got this thing today....

am i using it wrong? i have one lead on the wire for run and one on the copper linset connecting the compressor.

Are you serious?

[fcs]

Pascone10,

what do you think of the Extech ?

[Pascone10]

I like the extech to be honest. I mean you can tell its not a Fluke lol. It is durably ( is that a word?) Built. The only questionable thing is the insertion for the test leads.... Its a little on the loose side, however it still can develope a good reading... I would look into another extech in the future if I was looking for an inexpensive, not used everyday meter... I'm not sure about the scale tho so ill ask this.

In order to read higher then 200m ohms I need to be on the 1000v scale. I assume this is ok for 460 v units.. And when working on the smaller stuff I guess as long as I'm higher then 200m ohms its all good.. But I do like the meter so far.. Its also nice to have a multi meter built in, for ohm and voltage checks.. One more cool thing lol. You can see the actual battery reading of the meter when you go to VAC setting. I like that. I would buy another meter from them in the future tho!