Thread: RTDs suck!
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Unread 07-29-2004, 10:20 AM   #22
BillA
CoolingWorks Tech Guy
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Join Date: Dec 2000
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DeadEye
Ben is a special case, years in the making
(read his thread on the Radius wb, you will understand what is special about Ben)

I have a number of Fluke 2180A and 2190A thermometers, for cal I walk them to a cal lab ~400' from us, with the manual
- I get a table from 0-100° in 10° increments giving me the deviation, and I have all meters set in the same part of the 'curve' (wrt deviation)
(I incorporate the corrections into a spreadsheet which, with the sensor cal corrections, are used to determine the temp)

I also have a ref RTD, which is calibrated similarly by the same lab
then I use the ref RTD to 'cal' my working sensors in a bath or chamber

data logging is possible, but a chore to find the right parts - given that this gear is 20 yrs old
you need a 2300A scanner with the TC or RTD card(s) installed, AND a 1120A (GPIB translator) with the correct personality card - very difficult to find
or
for logging single point readings a quasi-prototype upper board was made, option 004, which has a GPIB output
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