Randy, Next thing you know, you will be looking at a 10K standard resistor to go with that 3458A and possible 732A.
Todd On Sun, Aug 17, 2014 at 3:51 PM, Randy Evans <[email protected]> wrote: > Todd and Bill, > > Thanks for the input. The 3.6 K thermistor reading seems viable and i will > pursue it further. > > I may have over committed myself to modifying the HP-419A, the Fluke 845A, > buying the 3458A and looking at buying a Fluke 732A. > > So much to do and so little time. > > Thanks again, > > Randy > > > On Sun, Aug 17, 2014 at 11:48 AM, Bill Gold <[email protected]> wrote: > > > Randy: > > > > I have 6 ea Fluke 732A instruments. The results of being an over the > > edge and deeply obsessed "Volt Nut", they just kept adding (reproducing?) > > over the years. My readings for the themistors range from 3.407K OHMS to > > 4.514K OHMS and all work just fine. 3.6K OHMS would seem just fine to > me. > > It really depends upon the final inside temp of the oven assembly. The > one > > with 3.407K OHMS measures around 47.5 degrees C while the others are > around > > 45 C. It is the stability of this reading over time that is very > > important. > > Fluke says that it could change as much as 10 ohms per month but mine are > > rock solid for years and years. > > > > Bill > > > > ----- Original Message ----- > > From: "Randy Evans" <[email protected]> > > To: <[email protected]> > > Sent: Sunday, August 17, 2014 11:08 AM > > Subject: [volt-nuts] Fluke 732A themistor reading > > > > > > > Can anyone tell me what value to expect for a Fluke 732A thermistor > > > reading? I am looking to get a used 732A and one of the things I was > > told > > > to look for is to measure the thermistor reading after the unit has > > heated > > > up for at least an hour. I saw in one of the posts that a "typical" > > > reading was 4950 ohms. One vendor I asked said he measured about 3600 > > ohms > > > after a two hour warmup. I was concerned that this is too low. What do > > you > > > guys think? > > > > > > Thanks, > > > > > > Randy > > > _______________________________________________ > > > volt-nuts mailing list -- [email protected] > > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts > > > and follow the instructions there. > > > > _______________________________________________ > > volt-nuts mailing list -- [email protected] > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts > > and follow the instructions there. > > > _______________________________________________ > volt-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts > and follow the instructions there. > _______________________________________________ volt-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/volt-nuts and follow the instructions there.
