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> Allen bradley SLC500 thermocouple input module 1746-NT4
Allen bradley SLC500 thermocouple input module 1746-NT4
Item Title: SLC 500 4-Channel Thermocouple Input Module
Model: 1746-NT4 Series B FRN: 2
The thermocouple module is fully compatible with all SLC 500 fixed and modular controllers. It is compatible with all NBS MN-125 standard types J, K, T, E, R, S, and B thermocouple sensors and extension wire; and with NBS MN-161, 14AWG, standard type N thermocouple and extension wire.
The Series B (or higher) 1746-NT4 differential design allows for a maximum channel-to-channel common-mode voltage difference/separation of 2 volts. This means that if you are using an NT4 with multiple grounded thermocouples with metallic sheaths or exposed thermocouples with measuring junctions that make contact with electrically conductive material, their ground potentials must be within 2 volts. If this is not done, your temperature readings will be inaccurate or the module could be damaged. If your grounded thermocouple protective sheath is made of an electrically non-conductive material such as ceramic, then the voltage separation specification is not as important.
* -50 to +50mVDC/ -100 to +100mVDC
