Honeywell TK-IAH161 Analog Input Module

Honeywell TK-IAH161 Analog Input Module

The Honeywell TK-IAH161 is a 16-channel analog input module designed for Honeywell control systems that require reliable acquisition of process measurement signals. The module supports both current and voltage input types, including 4-20 mA and 0-10 V signals, and incorporates conformal coating for improved resistance to moisture and corrosive industrial environments. Its high-resolution conversion and channel isolation make it suitable for demanding process monitoring applications.

Technical Specifications

Signal Acquisition Capabilities

The TK-IAH161 accepts both analog current and voltage inputs, allowing connection to a wide range of field instruments such as pressure transmitters, flow transmitters, temperature transmitters, level transmitters, and signal conditioning devices.

Support for both 4-20 mA and 0-10 V signals simplifies system design where multiple instrument types are used within the same control architecture.

High-Resolution Measurement

The module utilizes a 16-bit analog-to-digital converter to digitize field signals before transmission to the control system. High conversion resolution improves the ability to detect small process changes and maintains measurement detail across the configured operating range.

The specified full-scale accuracy supports applications requiring consistent process measurement and control performance.

Isolation and System Protection

Channel-to-bus optical isolation rated at 1500 V RMS helps separate field wiring from the control system backplane. This isolation reduces the effects of electrical noise, potential differences, and fault conditions that may originate in external field circuits.

Proper isolation is particularly important in large industrial plants where instrumentation wiring may extend over long distances.

Conformal Coated Construction

The TK prefix identifies the conformally coated version of the module. The protective coating minimizes the impact of humidity, dust, and corrosive contaminants on sensitive electronic components.

This construction can be advantageous in offshore facilities, chemical processing units, and other industrial environments where atmospheric conditions may challenge standard electronic assemblies.

Application Considerations

The TK-IAH161 is intended for process measurement acquisition rather than direct control output functions. Signal type, scaling configuration, and field wiring should be verified during commissioning to ensure compatibility with the connected instrumentation.

When replacing an installed module, technicians should confirm the complete model number to ensure that coating requirements and input signal capabilities match the original configuration.

Frequently Asked Questions

Q: How many analog input channels does the TK-IAH161 provide?

A: The module provides 16 analog input channels for connection to process instrumentation and monitoring devices.

Q: What signal types are supported by the TK-IAH161?

A: The module supports standard industrial analog signals including 4-20 mA current inputs and 0-10 V voltage inputs.

Q: What does the TK prefix indicate?

A: The TK designation identifies the conformally coated version of the module, providing additional protection against moisture and corrosive industrial atmospheres.