ABB NTAI04 Bailey Infi 90 RTD Analog Input Termination Unit

Description

The ABB NTAI04 is a dedicated 16-channel RTD interface for Infi 90 and Network 90 systems. It provides physical termination for field temperature sensors, utilizing 3-wire lead-wire compensation to ensure measurement precision over long distances.

Specifications

• Brand: ABB Bailey

• Model Number: NTAI04

• Product Type: RTD Analog Input Termination Unit

• Series: Infi 90 / Network 90

• Input Channels: 16 independent RTD inputs

• Sensor Compatibility: Supports 100-ohm Platinum (Pt) RTDs and other standard types

• Wiring Configuration: Designed for 3-wire RTD lead-wire compensation

• Interconnect: Connects to IMASI modules via NKTU ribbon cables

• Mounting: Standard NMOI series mounting base compatible

• Product Net Weight: 0.46 kg (1.01 lbs)

• Dimensions: 177.8 mm x 35.6 mm x 127 mm

Features

• Precise Thermal Interfacing: Specifically calibrated to handle the low-voltage millivolt signals generated by RTDs without introducing measurement bias.

• Lead-Wire Compensation: Supports 3-wire circuitry to automatically nullify the resistance effects of field wiring, ensuring the DCS receives only the actual sensor resistance.

• High-Density Monitoring: Provides termination for up to 16 sensors on a single board, maximizing the I/O capacity of the control cabinet.

• Rugged Connection Points: Features industrial-grade screw terminals designed to maintain high-pressure contact, preventing signal fluctuation caused by vibration or oxidation.

• Passive Signal Protection: Operates as a robust passive interface with integrated filtering to shield sensitive analog-to-digital converters from field-induced electrical noise.