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Modules for thermocouple temperature monitoring and millivolt measurements

By Paul Dvorak | September 19, 2011

 

When used with an Opto 22 SNAP PAC I/O processor or SNAP PAC rack-mounted programmable automation controller, the SNAP-AITM-4i is said to be ideal for equipment that requires precise thermal regulation.

The SNAP-AITM-4i thermocouple and millivolt input module are for industrial temperature monitoring and data acquisition. These let technicians acquire more accurate temperature readings, speed installation, and eliminate need to purchase thermocouples with expensive, built-in isolation. The new module accepts up to four inputs from a wide range of thermocouples (commonly used in industrial, scientific, and medical research applications). All four channel inputs are individually configurable and channel-to-channel isolated.

Individually configurable inputs help designers trim system costs because the module accepts multiple signal inputs-reducing the need to purchase separate modules for different thermocouple types or millivolt signals. Built-in, channel-to-channel isolation prevents ground loops that could cause electrical interference and lead to false temperature readings, and helps panel builders and instrumentation technicians reduce installation and wiring costs, while simplifying panel design.

In addition to type B, C, D, E, G, J, K, N, R, S and T thermocouple inputs, each of the four channels can be independently configured to accept ±150 mV, ±75 mV, ±50 mV, or ±25 mV inputs. For applications with multiple thermocouple inputs, this flexibility makes installation easier, faster, and less expensive. The SNAP-AITM-4i is also optically isolated, transformer isolated, and comes with a lifetime warranty.

The SNAP-AITM-4i provides accuracy of 0.06% (90 µV) @ 150 mV, 0.1% (75 µV) @ 75 mV, 0.1% (50 µV) @ 50 mV, and 0.2% (50 µV) @ 25 mV (all measurements full scale.) Resolution is 6 µV from -150 to 150 mV, 3 µV from -75 to 75 mV, 2 µV from -50 to 50 mV, and 1 µV from -25 to 25 mV. The SNAP-AITM-4i is available now at a list price of $325.00 USD.

Opto 22
http://www.opto22.com/


Filed Under: News, Projects
Tagged With: Opto22, PAC, Snap, thermocouples
 

About The Author

Paul Dvorak

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