Foxboro AD207AU High-Density Analog Input Module

Overview

The Foxboro AD207AU is a high-density analog input module for Foxboro I/A Series DCS, providing up to 32 analog channels for versatile signal acquisition. It supports voltage, current, RTDs, and thermocouples, delivering precise measurements for large-scale automation and continuous process monitoring in demanding industrial environments.

Operating Principle

The AD207AU integrates analog signal conditioning, high-accuracy A/D conversion, and communication within a compact, rugged module. Each input channel can be configured for the specific sensor type, offering flexibility across diverse automation setups. Redundant 24 VDC power and optional dual-module fault-tolerant configurations enhance reliability for mission-critical systems. Some supplier sub-variants are listed as dual-channel analog isolator/converters, offering rapid response and DIN-rail mounting for specialized applications.

Technical Specifications

Alternative Dual-Channel Isolator Variant

Some supplier catalogs list the AD207AU as a dual-channel analog signal isolator/converter with these characteristics:

• 2 independent channels

• DC current input, DC voltage output

• Isolation ~1500 VAC

• Response time <100 ms

• DIN-rail mounting

• Operating temperature –20°C to +70°C

Key Features

• Up to 32 universal analog inputs for diverse signal acquisition

• Handles voltage, current, RTD, and thermocouple signals

• 16-bit resolution with ±0.1% full-scale accuracy

• Redundant 24 VDC power support for reliable operation

• Optional dual-module fault-tolerant configuration

• Rugged design for harsh industrial conditions

• Stable long-term performance for continuous process monitoring

Application Scope

The AD207AU is suitable for:

Oil and gas production and refining
Chemical and petrochemical plants
Power generation facilities
Pulp and paper industry
Water and wastewater treatment
Large-scale process automation

FAQ

Q: Can the AD207AU handle multiple sensor types simultaneously?
A: Yes. Each channel is individually configurable for voltage, current, RTDs, or thermocouples.

Q: Does the module support fault-tolerant operation?
A: Yes. Dual-module configurations provide fault-tolerant operation with redundant power.

Q: Are there isolator/converter sub-variants?
A: Some suppliers list a dual-channel analog isolator/converter variant under the AD207AU model family for specialized applications.