Allen-Bradley 1746-NT8 SLC 500 Thermocouple/mV Analog Input Module

Number of input channels: 8. Compatible thermocouple types: J, K, T, E, S, R, B, N. Compatible millivolt ranges: ±50mV, ±100mV. Resolution: 16-bit input / 14-bit output. Power supply: 5V DC backplane. Operating temperature range: 0°C to +60°C.

It is compatible with multiple thermocouple types. It has high-precision A/D conversion, open circuit detection function, electrical isolation between channels, built-in cold junction compensation, and supports multiple range configurations.

It applies to industrial temperature monitoring, heat treatment furnace temperature control, chemical reaction temperature acquisition, engine temperature testing, environmental test chamber monitoring, and process temperature control in manufacturing.

Measurement accuracy: ±3.0°C typical. Update time: 356ms to 4.05s selectable. Step response: 60ms. Operating temperature range: 0°C to +60°C. Common mode rejection ratio: 120dB @60Hz.

It is a standard SLC 500 rack card with plastic front panel, screw terminal strip, status indicators, shielding layer design, and industrial-grade integrated circuits.

It receives input signals from thermocouples or millivolt sensors, converts them into digital values after signal amplification, cold junction compensation and A/D conversion, and transmits them to the PLC CPU through the backplane bus to realize accurate measurement and monitoring of temperature and small signals.

Install in any slot except slot 0 of the SLC 500 rack. Use thermocouple extension wires for wiring. Ensure reliable module grounding. Keep away from strong electromagnetic interference sources. Maintain ambient temperature within the rated range.

Distinguish positive and negative poles of thermocouples during wiring. Use corresponding type of compensation wires. Regularly calibrate measurement accuracy. Avoid open input circuits. Check sensor wiring first when a fault occurs.