PT100 Question
PT100 Question
(OP)
Having one Reliance motor, in the RTD specification they write: "PlATINUM,0.00392 TCR".
I'am try using AllenBradley RTD input module , but as of the "input type selection", one is the 100PT(385), other one is the 100PT(3916). Which one shall select then to make the bit seeing in the channel configuration word for the SLC Slack?
I'am try using AllenBradley RTD input module , but as of the "input type selection", one is the 100PT(385), other one is the 100PT(3916). Which one shall select then to make the bit seeing in the channel configuration word for the SLC Slack?





RE: PT100 Question
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: PT100 Question
RE: PT100 Question
They represent the alpha of the resistance - temperature equation for RTDs. There have been two standards for a long time. The American 0.0392 one and the European 0.0385 value. They have been slowly mixing and matching to where I would say the European one is now more common. The 3916 you are mentioning is really referring to 0.03916 which is close to 0.0392. I'm not sure if they are the same or not. I have never come across 0.03916 stated before, but someone is always coming along with 'their better way'. At any rate call it 0.0392 and then check it via calibration.
Keith Cress
Flamin Systems, Inc.- http://www.flaminsystems.com
RE: PT100 Question
ht