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          Discontinued / Obsolete by OEM
          Apter power guarantees premium quality Honeywell DCS hardware, delivering reliable replacement modules for legacy industrial control processors.

        TC-IAH161

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        1001 reviews ｜ Need a Specific Revision?
        Honeywell TC-IAH161 Analog Input Module provides precise 16-channel voltage and current measurement with high accuracy, fast 250ms update, and robust industrial-grade isolation.
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        Ships by Thursday, October 29
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
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        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
        Parts Availability
        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
        We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online. If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.

        Technical specifications for TC-IAH161

        • Manufacturer:
          Honeywell
        • Part Number:
          TC-IAH161
        • Product Family:
          Honeywell DCS
        • Product Type:
          Analog Input Module
        • Stock:
          2
        • Analog Input:
          10V & 4-20mA
        • Number of Points:
          16 channels
        • Input Voltage Range (Voltage):
          +/- 10.25 volts, 0 to 10.25 volts, 0 to 5.125 volts
        • Input Current Range (Current):
          0 to 20.5 mA (internal 250 Ω resistor)
        • Voltage Resolution:
          16 bits across each range shown below
        • Module Publish Rate:
          250 msec
        • Input Impedance (Voltage):
          Greater than 1.0 megΩ
        • Input Impedance (Current):
          249 ohms Ω nominal
        • Channel Bandwidth:
          20 Hz(-3dB)
        • RFI Immunity:
          Error of less than 2.0% of range at 10 V/m, 27 to 1000 MHz Gain Drift with Temperature 15 ppm/°C (Voltage); 20 ppm/°C (Current)
        • Power Dissipation:
          4.1 W max
        • Isolation Voltage User to system:
          100% Tested at 2550VDC for 1s
        • Connection Terminal Blocks:
          TC-TBCH, 36-position terminal block
        • Weight:
          0.24 kg
        • Estimated shipping dimensions:
          3.5x14x14.5cm
        • Tariff Code:
          9027900000
        • Country of origin:
          USA
        • Place of shipment:
          Xiamen, Fujian, China
        By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

        More Information

        Overview Manuals Specifications Application Communication Compliance and Protection

        Features:

        • High-Precision 16-Channel Analog Input Module Supporting Voltage And Current Signals
        • Robust RFI Immunity And Industrial-Grade Isolation Ensure Reliable Operation In Harsh Environments
        • Fast 250ms Module Publish Rate With Stable Gain Drift Across Wide Temperature Ranges
        The Honeywell TC-IAH161 Analog Input Module is designed to provide accurate and reliable measurement of analog signals in industrial automation systems. Supporting 16 channels of voltage (±10.25 V, 0–10.25 V, 0–5.125 V) and current (0–20.5 mA with internal 250 Ω resistor), TC-IAH161 enables precise monitoring of process variables, making it ideal for applications in manufacturing, energy, and process control industries.

        This module addresses challenges related to signal integrity and interference. With input impedances greater than 1.0 MΩ for voltage and 249 Ω nominal for current, along with RFI immunity maintaining errors below 2% of range at 10 V/m (27–1000 MHz), the TC-IAH161 ensures consistent and stable readings even in electrically noisy environments. User-to-system isolation is 100% tested at 2550 VDC for 1 second, providing safety and protection for both equipment and operators.

        Designed for efficient integration, the Honeywell TC-IAH161 features a 36-position TC-TBCH terminal block for easy wiring and maintenance. Its 16-bit resolution across all ranges, 250 ms publish rate, low power consumption of 4.1 W max, and minimal gain drift (15 ppm/°C voltage, 20 ppm/°C current) offer a combination of precision, speed, and stability that makes it superior to typical analog input modules. This makes TC-IAH161 a dependable choice for modern industrial control systems requiring both accuracy and operational reliability.

        The TC-IAH161 Honeywell Analog Input Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).

        Honeywell TC-IAH161 Analog Input Module Manuals, Datasheets, Drivers, Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        Honeywell TC-IAH161 Analog Input Module Specs

        General

        • Manufacturer Honeywell
        • Model TC-IAH161
        • Condition New Original ready stock
        • Product Family TC-PRS021,TC-FTEB01,TC-IXL062
        Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
        • Petrochemical & Refining: Used to monitor critical temperature grids, pressure lines, and fuel flows across extensive pipeline infrastructure.
        • Oil & Gas (Upstream & Midstream): Aggregates data from remote wellheads, offshore platforms, and tank farms, processing multiple instrument inputs into a single chassis footprint.
        • Power Generation Utilities: Monitors turbine variables, boiler pressures, and auxiliary cooling loop sensors.
        • Channel Density & Signal Range: Features 16 high-density channels. It accepts multiple voltage ranges (±10.25 V, 0–10.25 V, 0–5.125 V) and a current range of 0–20.5 mA (typically mapping 4–20 mA field loops).
        • HART Protocol Integration: Each individual channel is equipped to pass digital HART (Highway Addressable Remote Transducer) data superimposed over the 4–20 mA analog signal. This lets the control system read secondary variables, device diagnostics, and calibration parameters from smart field transmitters.
        • Physical Wiring Interface: Connects to field wiring via the TC-TBCH 36-position removable terminal block. It supports standard single-ended current wiring configurations using external interface modules (like the Allen-Bradley/Rockwell 1492-AIFM16-F-5 series due to hardware form-factor cross-compatibility).
        • Galvanic System Isolation: Engineered with rigorous user-to-system isolation tested at 2,550 VDC for 1 second. This safety barrier isolates external electrical faults, lightning transients, or field shorts, preventing them from blowing out the backplane or CPU.
        • RFI/EMI Noise Immunity: Offers strong defense against electromagnetic environments, keeping measurement errors below <2% of the total range when subjected to significant Radio Frequency Interference (10 V/m fields sweeping from 27 to 1,000 MHz).
        • Open-Circuit / Wire-Break Detection: Incorporates immediate fault diagnostics. If a physical wire snaps or an instrument loses power, the module flags an out-of-bounds negative full-scale reading in under 5 seconds, immediately alerting the HMI operator to the broken channel loop.
        Description
        The Honeywell TC-IAH161 Analog Input Module is engineered to handle complex analog signal acquisition in demanding industrial automation environments. Designed to manage both 0–10.25 V and 0–20 mA signals across 16 channels, this module ensures precise data capture for process control systems, enhancing operational reliability. With a 16-bit resolution, the TC-IAH161 allows fine-grained measurement of both voltage and current inputs, making it ideal for applications requiring high fidelity, such as chemical processing, energy monitoring, and manufacturing automation.

        This module resolves common issues related to signal noise and interference. With an input impedance greater than 1.0 MΩ for voltage and nominal 249 Ω for current, it guarantees accurate signal acquisition. Its robust RFI immunity maintains errors below 2.0% of range even under strong electromagnetic interference (10 V/m, 27–1000 MHz), a significant advantage over standard analog input modules. The TC-IAH161 also features a 100% tested isolation voltage of 2550 VDC for 1 second, ensuring safe separation between the user side and system, reducing risks of system damage.

        The Honeywell TC-IAH161 offers a module publish rate of 250 ms, enabling rapid system response and real-time monitoring. Gain drift is tightly controlled at 15 ppm/°C for voltage and 20 ppm/°C for current, providing stable long-term operation even in varying thermal conditions. Power dissipation is kept at a maximum of 4.1 W, which supports efficient energy usage without compromising performance. Terminal connections are facilitated via the TC-TBCH 36-position terminal block, simplifying installation and maintenance.

        Compared to similar analog input modules, the TC-IAH161 stands out for its combination of high channel density, wide input ranges, precise resolution, and industrial-grade protection features. Its dual capability of measuring both voltage and current, together with fast update cycles and superior RFI resistance, makes it a preferred choice for engineers who require reliable and high-performance analog inputs in critical control systems. Honeywell TC-IAH161 is compatible with a wide range of DCS and PLC platforms, providing flexibility and interoperability in complex industrial setups.
        Alternative Names
        TC-IAHI6I TC IAH161 TC-IXR061 TC-OAV081 TC-IXL062 TC-IXL061 TC-IAH061 TC-PPD011 51309241-125
        Technical notes
        The Honeywell TC-IAH161 is a 16‑point digital input module designed for the Honeywell Experion PKS and TDC 3000 distributed control systems, providing high-density monitoring of 120V AC field devices such as switches, pushbuttons, and proximity sensors.
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        FAQS

        The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
        VIEW ALL FAQS
        Can I get more photos of the Honeywell TC-IAH161?
        Absolutely, high-resolution photos of TC-IAH161 including terminals and labeling can be provided upon request.
        What input voltage ranges does Honeywell TC-IAH161 support?
        TC-IAH161 supports ±10.25 V, 0 to 10.25 V, and 0 to 5.125 V ranges.
        What is the resolution of the TC-IAH161 inputs?
        Honeywell TC-IAH161 provides 16-bit resolution across all voltage and current ranges.
        Why is input impedance important, and what are TC-IAH161’s values?
        High input impedance (>1.0 MΩ for voltage, 249 Ω nominal for current) minimizes loading effects and ensures accurate readings.

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