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pHaestus · 05-04-2005, 07:06 PM

1a) for pH

Some SERIOUS comments:
I actually really like my Digitec thermometers that use thermistors. They are incredibly robust and very stable. But they aren't much good for measuring air temperatures because the fluctuations kill you (you just can't physically record temperatures rapidly enough to get good statistically sound data).

Does the Cole-Parmer unit accept YSI 400 or 700 or both type thermistors? If it accepts 400 then look for the little 1/8" sheathed probes. I have a Fisher Scientific number for them if needed. They'd be good for your die sim; better than the larger units for sure. Do you need any more 700 series probes? I have a box full of them for liquid or air measurement (from my Digitecs)...

I would get at least another Cole-Parmer unit if you possibly can. You probably have to give the temperature reading a minute or two (check the manual) to stabilize fully when you switch channels. This makes it hard to record die and water in temps. I have 3 digitecs on top of one another (wb in, wb out, and air) and that seems to work "OK" for doing testing.

05-04-2005, 07:06 PM	#34
pHaestus Big Player Making Big Money Join Date: Aug 2001 Location: irc.lostgeek.com #procooling.com Posts: 4,782	1a) for pH Some SERIOUS comments: I actually really like my Digitec thermometers that use thermistors. They are incredibly robust and very stable. But they aren't much good for measuring air temperatures because the fluctuations kill you (you just can't physically record temperatures rapidly enough to get good statistically sound data). Does the Cole-Parmer unit accept YSI 400 or 700 or both type thermistors? If it accepts 400 then look for the little 1/8" sheathed probes. I have a Fisher Scientific number for them if needed. They'd be good for your die sim; better than the larger units for sure. Do you need any more 700 series probes? I have a box full of them for liquid or air measurement (from my Digitecs)... I would get at least another Cole-Parmer unit if you possibly can. You probably have to give the temperature reading a minute or two (check the manual) to stabilize fully when you switch channels. This makes it hard to record die and water in temps. I have 3 digitecs on top of one another (wb in, wb out, and air) and that seems to work "OK" for doing testing. __________________ Getting paid like a biker with the best crank... -MF DOOM Last edited by pHaestus; 05-04-2005 at 07:16 PM.