Overview
The Yokogawa CH1*A is a high-performance signal conditioner and interface module designed for CENTUM control systems. It ensures precise conversion, isolation, and conditioning of both analog and digital signals, maintaining system integrity and reliable communication between field devices and the control platform.
This module is compatible with CENTUM V, CENTUM VP, and migrated Yokogawa control systems, making it ideal for both system upgrades and legacy replacements.
Key Features
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Converts analog and digital signals for compatibility with CENTUM control systems.
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Provides electrical isolation between field devices and the controller to prevent interference or damage.
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Conditions input signals to meet control system requirements for stable and accurate data acquisition.
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Flexible measuring ranges adjustable via portable BRAIN terminal.
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Long-term compatibility with both legacy and modernized CENTUM systems.
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Typically installed in a signal conditioner nest as an expansion or replacement card.
Technical Specifications
| Attribute | Specification |
|---|---|
| Product Type | Signal Conditioner / Interface Module |
| Model | CH1*A |
| Supported Systems | CENTUM V, CENTUM VP, migrated Yokogawa systems |
| Signal Types | Analog and Digital I/O |
| Functionality | Signal conversion, isolation, conditioning |
| Isolation | Electrical isolation between field and system signals |
| Power Supply | Isolated power via built-in distributor |
| Communication | Some variants support BRAIN transmitters (ADMAG, YEWFLO) |
| Installation | Signal conditioner nest, panel or rack-mounted |
Applications
The CH1*A module is widely used in industrial control applications including:
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Process measurement and control in chemical, oil & gas, and power plants
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Replacement or upgrade of existing CENTUM systems
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Integration with BRAIN transmitter devices for flow and pressure monitoring
FAQ
Q: Can the CH1*A module be used in both CENTUM V and CENTUM VP systems?
A: Yes, the module is fully compatible with CENTUM V, CENTUM VP, and migrated Yokogawa systems.
Q: Is the measuring range adjustable?
A: Yes, it can be configured via a portable BRAIN terminal, providing field flexibility.
Q: What type of signals does it support?
A: Both analog and digital I/O signals from field devices.
Q: Does it offer electrical isolation?
A: Yes, it provides electrical isolation between field signals and the control system to maintain signal integrity.
Q: What are similar alternatives?
A: Other Yokogawa signal conditioner modules such as CH1B or CH2 series offer similar conditioning with extended input ranges or additional digital outputs.
