ABB AI835

Technical Parameters

Power Supply: 24 VDC

Input Voltage Range: -10 to +10 V

Input Current Range: -20 mA to +20 mA

Input Impedance: 10 MΩ

Output Voltage Range: 0 to 10 V

Output Current Range: 0 to 20 mA

Output Impedance: 100 Ω

Measurable Thermocouple Types: B, C, E, J, K, N, R, S, T

Resolution: 15-bit

Accuracy: ±0.1% of full scale

Linearity: ±0.05% of full scale

Noise: <10 μV rms

Common Mode Rejection Ratio (CMRR): >120 dB

Operating Temperature: -25°C to +70°C

Storage Temperature: -40°C to +70°C

Functional Features

High-Precision Signal Acquisition Module: ABB AI835 8-Channel Thermocouple/mV Input Module Engineered for precision thermocouple and millivolt signal measurement with differential inputs. Features advanced common-mode noise suppression for ±0.05% accuracy, optimized for industrial temperature monitoring and microvolt-level signal detection.

The measurement range is flexible and configurable: Each channel supports a configurable measurement range, e.g. the voltage range can be set from -30 mV to +75 mV linear. Support up to 8 External Thermocouple types : B, C, E, J, K, N, R, S & T types. Its flexibility allows the module to easily be adapted to suit different sensor types to satisfy applications in various domains and to provide a high level of customizability in system design.

It also includes a linearization function: ABB AI835 integrates the cold junction compensation function, through the cold junction temperature to the reference junction (cold junction) temperature for accurate compensation in thermocouple measurement, to achieve high precision temperature measurement. Plus the module provides a linearization function, which can realize the linear output of thermocouples and other nonlinear signals, allowing the control system to be further operated directly.

Detection of input disconnection and protection of output short-circuit: ABB AI835 has built-in input disconnection detection function and can identify whether the sensor's wiring has been disconnected in real time, ensuring the reliability of the data acquisition system and supporting the triggering of alarms or corrective measures. ABB AI835 additionally has output short-circuit protection that protects the module and connected load from damage when the output circuit is short.

Gasrelaxation design: ABB AI835 provides galvanic isolation between input and output channels to prevent electric interference from affecting measurement signals. This isolation design reduces the risk of electric shock and equipment damage due to circuit separation, improving system safety while also protecting the module and other equipment from electrical faults.

Broad compatibility with multi-module terminal units (MTU): ABB AI835 supports wide range of MTU model including TU810, TU812, TU814, TU818, TU830 and TU833. This wide range of compatibility gives a lot of flexibility to integrate into systems so that users can choose different MTUs in accordance with that needs to gain additional functional capabilities like signal conditioning, terminating configuration or connecting options.

Application Fields

Industrial Automation: Used in manufacturing industries like automotive, electronics and plastics to monitor and control various process variables. ABB AI835 This manufacturing process relies heavily on controlling processes and ensuring quality, which is achieved by correct conversion of sensor analog signals. The electric field can also be used to measure voltage and current in the manufacturing of printed circuit boards to detect and correct if there are any deviations in the manufacturing process.

Energy Supply and Dispatch: This critical data collection from the ABB AI835 will also be able to optimize the generation of power, prevent equipment failure, and improve efficiency in energy production. It can also be used to monitor voltage and current in distribution networks at substations and distribution points, improving grid stability and ensuring the quality of power supply.

Environmental Regulation: Environmental Monitoring | The module provides precise analog-to-digital (ADC) conversion with high accuracy and enables accurate control over the water-treated process to meet quality standards. It can be integrated with sensors at air quality monitoring stations that measure pollutants including particulate matter, sulfur dioxide, and nitrogen oxides, delivering real-time data useful for environmental monitoring and compliance with regulations.

Smart Building Systems and Environmental Control: ABB AI835 can interface to sensors that measure temperature, humidity and air quality in different areas of a building. Converting these analog signals to digital data, the module allows building management systems to regulate heating, ventilation, and air conditioning (HVAC) systems, lighting systems, and other building services. Use case such as detecting temperature and humidity, automatically adjusting HVAC system settings as needed to maintain a comfortable indoor environment for occupants while maximizing energy consumption optimization.