compensation for FP-RTD-122 rtd

[suresh.r]

Hi
Iam using FP-RTD-122 with a 3 wire PT100 RTD to measure the TEMP in a Vacuum Chamber. I had got my RTD Calibrated & find that there is a diff of +/- 3 deg w.r.t to my FP-RTD-122 modules.The same RTD when connected to Eurotherm 2408 Temp Controller gives a correct reading. I suspect that there could be some problem in the FP modules, Is there any VI where i can directly write compensation to the modules. Can u plz help me resolve this issue. Cheers Suresh.R

[Matthew_Williams]

Have you tried unplugging and reconnecting the I/O module while the network module is running? We saw several I/O modules that would show a +4C offset if powered up with the rack but no offset if hot plugged.

Matt

[Bill B]

Hello,

If you are seeing this type of offset, it is most likely the result of ESD damage to the FP-RTD-122 module. The good news that you can workaround this problem by hot plugging your modules into your bank as Matthew has mentioned.

Regards,
Bill B
Applications Engineer
National Instruments