High density RTD/resistance input cards
High density RTD/resistance input cards
(OP)
Hello, I am looking for an analog input card or device that measures resistance, and interfaces with an Allen-Bradley PLC, preferably using Ethernet/IP. The measurement repetition rate should be less than 500ms or so, ideally less than 100ms. Resistance range is about 50-500Ω. We need 48 channels, so high density is valued. 12-bit resolution should be sufficient. What options are out there?
I have explored the brands Wago, Allen-Bradley, Advantech, B&R, and Beckhoff so far, but each of their solutions has various drawbacks.
I am open to using a voltage input card, but the full scale range would need to be around 200mV, not the standard 10V. And plus going that route would require pull-up resistors, complicating the panel wiring.
I have explored the brands Wago, Allen-Bradley, Advantech, B&R, and Beckhoff so far, but each of their solutions has various drawbacks.
I am open to using a voltage input card, but the full scale range would need to be around 200mV, not the standard 10V. And plus going that route would require pull-up resistors, complicating the panel wiring.
RE: High density RTD/resistance input cards
https://www.tek.com/en/products/keithley/digital-m...
TTFN (ta ta for now)
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RE: High density RTD/resistance input cards
RE: High density RTD/resistance input cards
TTFN (ta ta for now)
I can do absolutely anything. I'm an expert! https://www.youtube.com/watch?v=BKorP55Aqvg
FAQ731-376: Eng-Tips.com Forum Policies forum1529: Translation Assistance for Engineers Entire Forum list http://www.eng-tips.com/forumlist.cfm
RE: High density RTD/resistance input cards
Link
Brad Waybright
The more you know, the more you know you don't know.
RE: High density RTD/resistance input cards
The 6 minute video is a good summary:
Link
voltage input modules on this page:
Link
I didn't read closely enough to see if the RTD resistance input module would do 2 wire raw resistance over your range, but most I/O modules do.
temperature (resistance) modules on this page:
Link