Model Explanation

51309223-125: Honeywell Material Number (51309223 = TC-specific LLMUX series; 125 = 16-channel standard version)

MU-TAMT03: Module Model

MU = Multiplexer Unit (Multi-channel unit)

TAMT = Thermocouple Analog Multiplexer TC (Thermocouple Analog Multi-channel)

03 = Hardware Version (Rev.03, Industrial Standard Version) Technical Specifications

Channel quantity: 16 differential inputs (mainly TC, compatible with 2 RTD)

Signal type: Thermocouple (B/E/J/K/N/R/S/T types) + 2 RTD (PT100) + mV signal

Resolution: 16 bits (high-precision ADC)

Accuracy: TC: ±0.5°C; RTD: ±0.2°C

Isolation strength: 1500V RMS (channel - system isolation)

Cold junction compensation (CJR): On-board local high-precision CJR (±0.5°C)

Input impedance: >1MΩ (TC/mV dedicated)

Power supply: 24VDC (±10%), UCN backplane power supply

Operating temperature: 0°C ~ +60°C (standard industrial grade)

Storage temperature: -40°C ~ +85°C

Humidity: 5% ~ 95% RH (no condensation)

Size: 135 × 85 × 55 mm

Weight: 0.75 kg

Certifications: CE, UL, CSA

Interfaces and Communications

Field side: 16 gold-plated screw terminals (common for TC/RTD/mV connections)

System side: High-density UCN flat cable (connects LLMUX IOP cards)

Status indicators: PWR (green), READY (green), FAULT (red) LEDs

Configuration: DCS software configuration for TC type, RTD wiring, range, filtering, CJR parameters

Hot-swappable: Supported (online replacement does not affect system operation) Core function

16-channel TC high-precision acquisition + 2-channel RTD multiplexing: Suitable for mainstream thermocouples, also accommodating a few RTD measurement points, with high flexibility

On-board precise cold junction compensation: Local CJR eliminates the cold junction error of thermocouples, ensuring low-temperature measurement accuracy

High input impedance anti-interference: >1MΩ input impedance, compatible with weak TC/mV signals, suppressing industrial environment EMI interference

Full coverage of fault diagnosis: TC open/closed circuit, RTD failure, over-range, power supply abnormal alarm

Compact design easy to install: Small size, light weight, saving space in cabinet layout, convenient wiring Applicable scenarios

Industry: Petrochemicals, Electricity (thermal power / nuclear power), Metallurgy, Glass manufacturing, Heat treatment

Applications: 16-channel thermocouple dense temperature measurement, high-temperature furnaces / reaction vessels / pipeline temperature monitoring, mainly TC with a small amount of RTD mixed measurement points

Compatible systems: Experion PKS (C200/C300), TDC 3000, TPS (UCN network LLMUX IOP matching)