Product Details
Configured for high-resolution analog signal acquisition in Honeywell Experion PKS platforms, the Honeywell TC-IAH161 (TC-IAH161 High Level Analog Input Module) provides direct physical/electrical execution. It digitizes signals across 16 channels, supporting voltage ranges up to +/- 10.25 VDC and current inputs from 0 to 20.5 mA using internal 249 ohm precision resistors. The module converts field transmitter values into 16-bit digital variables for cyclic backplane transmission.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | TC-IAH161 |
| Brand | Honeywell |
| Origin | USA |
| Weight | 1.5 kg |
| Dimensions | Standard Experion Chassis Form Factor |
| Operating Temp | -20 to +70 deg C |
| Power Consumption | 4.1 W max |
| Product Type | Analog Input Modules |
| Channel Count | 16 channels |
| Input Voltage Ranges | +/- 10.25 VDC, 0 to 10.25 VDC, 0 to 5.125 VDC |
| Input Current Range | 0 to 20.5 mA (internal 249 ohm resistor) |
| Resolution | 16 bits across selected range |
| Module Publish Rate | 250 msec |
| Input Impedance | Greater than 1.0 megohm (Voltage), 249 ohms nominal (Current) |
| Channel Bandwidth | 20 Hz (-3dB) |
| System Isolation | 2550 VDC tested for 1 s (User to system) |
| Terminal Block Interface | TC-TBCH 36-position terminal block |
Process Control & Field Signal Conditioning
The TC-IAH161 incorporates channel-to-channel isolation and input filtering networks to eliminate high-frequency field noise. When integrated with 4-20 mA HART loop protocol transmitters and high-density DCS racks, the internal 249 ohm current sense resistors convert field loops into clean differential voltage signals. The 20 Hz input bandwidth and active filter circuits suppress common-mode voltage spikes and cross-talk, protecting internal ADC electronics while maintaining continuous signal updates to the controller backplane every 250 msec.
Frequently Asked Questions
Q: How are current signals converted to voltage values on the TC-IAH161?
A: Current loop inputs utilize internal 249 ohm nominal sense resistors onboard the module to drop 0 to 20.5 mA signals into proportional voltage inputs for the 16-bit analog-to-digital converter.
Q: What is the dielectric isolation rating between the field terminals and the system logic backplane?
A: The user-to-system electrical isolation barrier is 100% factory tested at 2550 VDC for 1 second, preventing high-voltage field transients from damaging backplane control electronics.
Field Installation Guidelines
- Chassis Insertion: Align the module card edges with the designated slot guide rails in the Experion rack and press firmly until the rear connector fully seats into the backplane.
- Terminal Wiring: Secure field conductors to the TC-TBCH 36-position terminal block. Tighten terminal screws to standard torque specs to avoid high-resistance terminations.
- Shield Grounding: Ground instrument cable shields at the single point earth ground bar within the enclosure to minimize electromagnetic interference and ground loop paths.
- Signal Separation: Maintain physical separation between low-level analog input wiring and high-voltage AC power lines within cabinet wire ducts to prevent noise coupling.
Additional Information
- 100% Genuine Parts: All products are original and authentic, ensuring reliable industrial performance.
- 30-Day Refund Guarantee: Return any in-stock item within 30 days in original, unopened packaging for a full refund (excluding shipping and fees).
- 12-Month Warranty: Covers defects in materials or workmanship; excludes misuse, normal wear, or unauthorized modifications.
- Worldwide Shipping: We ship via USPS, UPS, FedEx, and DHL. Delivery times vary by country and may be subject to customs or import fees.
- Support & Contact: Technical and warranty assistance is available anytime. Contact us here: Contact.
- Purchase Guidance: Check product specifications and compatibility carefully before ordering to ensure proper application.
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