ABB AI835A Thermocouple/Millivolt Input Module

Description

The ABB AI835A Thermocouple/Millivolt Input Module is a member of the AI800 series, designed to convert thermocouple or millivolt (mV) signals into digital data for use with PLCs or other industrial control systems. Equipped with 8 differential input channels, it supports a wide range of thermocouple types including J, K, E, T, R, S, B, N, and C, with a linear input range of -30mV to +75mV. Key technical specifications include 16-bit resolution, a 1000Hz sampling rate, and LED status indicators for quick operational monitoring.

Engineered for industrial reliability, the module features a high-precision A/D converter to ensure accurate measurement data, and uses high-quality components tested to perform stably in harsh operating environments. It offers advanced functions such as cold junction compensation and signal linearization, with one channel configurable for dedicated cold junction temperature measurement, or usable as a standard input channel when compensation is not required. The module supports DIN rail mounting, with dimensions of 150mm length, 150mm height, 75mm width, and a weight of 0.2kg. Ideal for diverse industrial applications, it is commonly used in building automation for tasks like rooftop water tank temperature monitoring, indoor smoke detection system signal capture, and alarm switch input processing.