Honeywell MC-TAMT03 51309223-175 - Image 1

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Honeywell MC-TAMT03 51309223-175

Product Name:

Honeywell Experion PKS Series C Thermocouple / Millivolt Input Module (TAMT — Thermocouple & mV)

Product Description:

An 8- or 16-channel thermocouple and low-level millivolt analog input module for Series C I/O, providing cold-junction compensation (CJC) and high-resolution A/D conversion for temperature measurement.

Category: Honeywell

Description

Technical Specifications:

Part Number: 51309223-175 (MC-TAMT03)
Channels: Typically 8 differential TC/mV inputs (some revisions 16 ch)
Input Types: Type J, K, T, E, N, R, S, B thermocouples + ±50 mV / ±100 mV custom ranges
Resolution: 16-bit A/D, 0.1 °C typical readability (depends on TC type)
Accuracy: ± 0.15 % of reading + CJC error (typical ± 0.5 °C CJC accuracy)
Cold-Junction Compensation: Via onboard sensor referenced to I/O rack ambient
Isolation: 500 VAC channel-to-backplane; channel groups share common reference
Sampling: 4–8 samples/sec per channel typical
Open TC Detection: Yes (upscale or downscale configurable)
Operating Temp: 0 °C to +60 °C
CJC Reference: Requires proper CJC sensor in FTA or integrated CJC probe

Features:

Software linearization per TC type
Digital filtering (moving average, first-order lag)
Alarm limits (high/low/deviation) processed in module or controller
Hot-swappable

Applications: Reactor temperature monitoring, furnace profiling, heat exchanger ΔT calculation, distillation column tray temperature in process DCS.

Construction: Series C module with precision instrumentation amplifier, 16-bit ADC, CJC sensor, gold-edge connector.

Working Principle: Millivolt signal from thermocouple (referenced to CJC temperature) is amplified, digitized, linearized using stored polynomial coefficients → converted to engineering units → sent to C300 controller.

Installation & Precautions:

Use shielded twisted-pair thermocouple wire; connect shield to ground at FTA only.
Ensure FTA CJC jumper/sensor is correctly installed; incorrect CJC = large temp error.
Avoid running TC wires in same conduit as high-current AC or switched DC cables.
For grounded thermocouples, select correct input configuration (grounded/un-grounded) in software.
Verify TC polarity — reversed wiring gives negative temperature reading.

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