ABB AI835A

Technical Parameters

Resolution: 15 bits

Input Impedance: >1 MΩ

CMRR (50 Hz, 60 Hz): 120 dB

NMRR (50 Hz, 60 Hz): >60 dB

Rated Insulation Voltage: 50 V

Dielectric Test Voltage: 500 V a.c.

Power Dissipation: 1.6 W

Current Consumption +5V Module Bus: 75 mA

Current Consumption +24V Module Bus: 50 mA

CJ-Channel (ch 8): < -40°C  and >100°C

Operating Temperature : 0 to +55°C , approvals are issued for +5 to +55°C

Storage Temperature: -40 to +70°C

Relative Humidity: 5 to 95%, non-condensing

Max Ambient Temperature: 55°C , for vertical mounting in compact MTU 40°C

Protection Class: IP20

Functional Features

Independent input channel configuration: ABB AI835A is equipped with 8 differential input channels, and the measurement range of each channel can be adapted to different levels.In the linear range from -30mV to +75mV, it is selectable, and can also be adapted to different types of thermocouples: B, C, E, J, K, N, R, S, T, D, L, U, etc.

Cold junction compensation function : The 8th channel of ABB AI835A can be configured as "cold end" temperature measurement, which is actually cold end compensation for channel 1. The cold end temperature can be accurately measured on the MTU screw terminal of the module, or on a connection unit far away from the device, and a fixed cold end temperature value can be defined.

High A/D conversion resolution: ABB AI835A has 15-bit A/D conversion to ensure high-precision measurement and accurate acquisition of thermocouple and millivolt signals.

Fault monitoring: ABB AI835A input channels have open circuit and disconnection monitoring functions, which can detect line faults in time, enhance the reliability of system operation, and ensure the stability and safety of the measurement process.

Application Fields

Industrial Automation: ABB AI835A is being used among industrial manufacturing. In automotive factories, it interfaced with sensors to test robot arm torque for the right assembly, watches welding gun temperature for quality welds, and checks hydraulic system pressure. In the electronics industry, it measures voltage and current in the printed circuit board manufacturing process. In the manufacture of plastic, it measures temperature and pressure during the injection moulding.

Energy Supply and allocation: The precise temperature measurement function of ABB AI835A can be used by the control system to maintain an appropriate fuel supply and other parameters, while monitoring the pressure of steam turbine, and can be connected to the sensor that measures wind speed; according to the state of wind flow to control the control system adjust turbine blade pitch angle; optimize power generation. It can be used to provide real-time monitoring of compound energy status in the distribution network. Maintaining the voltage and current levels stable is very important for grid stability and power supply quality.

Environmental Monitoring: ABB AI835A is a popular choice for use in water treatment plants, air quality monitoring stations, and waste management facilities. It can measure dissolved oxygen content and turbidity in water; pollutants like particulate matter, sulfur dioxide and nitrogen oxides in the air; and can monitor temperature and gas composition of landfills. Its primary function is to convert these sensors' analog signals accurately so that it can provide environmental assessment and regulatory compliance in real time.

Smart Building Systems and Environmental Control: ABB AI835A is connected to sensors that determine the temperature of various parts of a building. The building management system can control the building's heating, ventilation, and air conditioning (HVAC) to maintain temperature readings so people can live comfortably. It can also check humidity levels using the module. The system is able to control a humidifier through precise humidity measurements.