Foxboro 1025128B Fieldbus Module

Product Description

The Foxboro 1025128B is a precision Fieldbus Module (FBM) designed for Foxboro I/A Series distributed control systems (DCS). It provides accurate acquisition of analog signals from field transmitters and sensors, ensuring stable data flow to control processors for reliable process monitoring and control.

Its compact, modular construction allows for easy installation in control cabinets while maintaining robust operation under industrial conditions. The module supports multiple analog input channels, high 16-bit resolution, and standard 4–20 mA current loops. With over-voltage and short-circuit protection and optional redundant 24 VDC power, the 1025128B is well suited for fault-tolerant operation in critical processes.

Technical Specifications

• Model: 1025128B

• Product Type: Fieldbus Module (Analog Input)

• Manufacturer: Foxboro (USA)

• Series: I/A Series DCS

Input & Signal Handling

• Function: Analog input acquisition from field transmitters and sensors

• Input Channels: 8–16 analog inputs depending on configuration

• Signal Range: 4–20 mA standard industrial current loop

• Resolution: 16-bit high precision

• Accuracy: ±0.1% of span

Power & Environmental

• Supply Voltage: 24 VDC (supports redundant supply)

• Operating Temperature: 0°C to +60°C (32°F to +140°F)

• Protection: Over-voltage and short-circuit protection

Mechanical Dimensions

• Size: 114 × 61 × 23 mm

• Weight: 0.5 kg

• Integration: Compatible with Foxboro I/A Series controllers and PAC systems

Key Features

• High-precision analog input measurement for process-critical variables

• Compact modular design for simplified cabinet installation

• Seamless integration with Foxboro I/A Series DCS

• Rugged construction ensures reliable operation in harsh industrial environments

• Supports redundant power supply for enhanced fault tolerance

Typical Applications

• Chemical plants: Monitoring flow, pressure, and temperature transmitters

• Oil & gas facilities: Supervising pipeline sensors and refinery equipment

• Power generation: Turbine and boiler instrumentation

• Pharmaceuticals: Ensuring precise production monitoring

• Water treatment: Measuring conductivity, pH, and other water quality parameters

FAQ

Q: How many analog inputs can the 1025128B support?
A: The module typically supports 8–16 analog input channels, depending on configuration.

Q: What is the signal resolution and accuracy?
A: It offers 16-bit high precision resolution with ±0.1% span accuracy.

Q: Can it operate in fault-tolerant systems?
A: Yes, it supports redundant 24 VDC power and features over-voltage and short-circuit protection.