ABB AI835 3BSE008520R1 Analog Input 8 Ch. Thermocouple

Product Description

The AI835 (Part Number: 3BSE008520R1) is a high-precision 8-channel analog input module engineered for the ABB S800 I/O system. Specifically designed for temperature measurement, this module provides direct interfacing for various thermocouple types and low-level millivolt (mV) signals. It eliminates the need for external signal converters by providing onboard cold-junction compensation and linearization for standard industrial sensors.

The AI835 3BSE008520R1 features 15-bit resolution (plus sign) to ensure high-accuracy data acquisition for critical process monitoring. Each of the eight channels is individually configurable, allowing for a mix of sensor types within a single module. Built for reliability in demanding environments, the module offers a rated isolation of 50V and is designed to be mounted on standard Module Termination Units (MTUs) such as the TU810, TU812, or TU814, facilitating efficient field wiring and hot-swappability in live systems.

Detailed Technical Specifications

The AI835 delivers deterministic signal processing for high-density temperature monitoring.

• Manufacturer: ABB

• Model Number: AI835

• Part Number: 3BSE008520R1

• Product Type: Analog Input Module

• Number of Channels: 8 Differential Channels

• Input Types: Thermocouples (Type B, C, E, J, K, N, R, S, T) and Linear mV (-30 to +75 mV)

• A/D Resolution: 15 bits + sign

• Rated Isolation Voltage: 50 V

• Input Impedance: > 10 MΩ

• Accuracy: ±0.1% of full scale (Thermocouple dependent)

• Update Time: Cycle time depends on the number of active channels and filter settings

• Power Supply: 24 VDC (sourced via the MTU)

• Power Dissipation: 1.5 W (Typical)

• Compatible MTUs: TU810, TU812, TU814, TU830, TU833

• Operating Temperature: 0°C to +55°C (Standard) / -20°C to +60°C (Extended range compliant)

• Net Weight: 0.2 kg

• Dimensions: 124 mm x 45 mm x 102 mm (Module only)

• Certifications: CE, UL, RoHS, and G3 Conformal Coating compliant