Description
Product Description
HONEYWELL 05701-A-0145 is a precision analog input module belonging to Honeywell’s Series 5701 I/O family, engineered for reliable acquisition of thermocouple and millivolt-level signals in industrial applications such as chemical processing, power generation, and metal manufacturing. HONEYWELL 05701-A-0145 features 8 isolated channels optimized for low-voltage signal measurement (0-100mV, thermocouple types J/K/T/E/R/S/B/N), with built-in cold-junction compensation (CJC) for accurate temperature readings from thermocouple sensors. HONEYWELL 05701-A-0145 delivers exceptional stability and noise immunity, making it ideal for high-precision temperature monitoring in harsh industrial environments. Additionally, HONEYWELL 05701-A-0145 supports hot-swappable installation and seamless integration with Honeywell’s control systems (Experion PKS, ControlEdge PLC) and third-party platforms via Modbus, ensuring flexibility for retrofits and new installations. As a core temperature measurement component of Honeywell’s industrial I/O portfolio, HONEYWELL 05701-A-0145 provides accurate, real-time data to support critical process control.
Product Parameters
- Brand/Model: HONEYWELL 05701-A-0145
- Core Input Parameters
- Number of Channels: 8 isolated single-ended analog input channels
- Supported Signals:
- Thermocouple: J, K, T, E, R, S, B, N (with cold-junction compensation)
- Millivolt: 0-100mV DC (unipolar/bipolar configurable)
- Resolution: 16-bit (0.0015% of full scale for millivolt, 0.1°C for thermocouple)
- Accuracy:
- Thermocouple: ±0.5°C (0-1000°C), ±1.0°C (>1000°C)
- Millivolt: ±0.02% of full scale (20°C), ±0.05% of full scale (-20°C to +60°C)
- Isolation: Channel-to-channel isolation (1500V AC), channel-to-ground isolation (2500V AC)
- System & Diagnostic Parameters
- Compatible Systems: Honeywell Experion PKS, ControlEdge PLC, Series 9000 RTU, third-party PLC/DCS (Modbus RTU/TC)
- Diagnostic Functions: Open thermocouple detection, overrange/underrange alerts, cold-junction failure monitoring, self-test
- Configuration: DIP switches (thermocouple type/millivolt range) + software calibration (Honeywell Engineering Tools)
- Environmental & Physical Parameters
- Operating Temperature: -40°C ~ +70°C
- Storage Temperature: -40°C ~ +85°C
- Vibration Resistance: 5g (10-2000Hz, IEC 60068-2-6 standard)
- Shock Resistance: 30g (11ms half-sine wave)
- Power Supply: 24V DC (18-32V) ±10%, power consumption ≤ 10W
- Protection Grade: IP20 (cabinet installation)
- Installation Method: DIN 35mm rail mounting (panel-mount optional)
- Dimensions: 120mm × 70mm × 30mm (compact DIN-rail form factor)
Advantages & Features
- Specialized Low-Voltage Signal Measurement: HONEYWELL 05701-A-0145 is optimized for thermocouple and millivolt signals, with built-in cold-junction compensation (CJC) eliminating the need for external signal conditioning modules for temperature measurements.
- High Accuracy & Noise Immunity: 16-bit resolution and tight accuracy tolerances, combined with differential input design, minimize electromagnetic interference (EMI) and ensure reliable data acquisition even in high-noise industrial environments (e.g., near furnaces or motors).
- Wide Compatibility & Hot-Swap Support: The module integrates with Honeywell’s control systems and third-party platforms via Modbus, while hot-swappable installation allows replacement without system shutdown—reducing maintenance downtime.
- Comprehensive Diagnostics: Open thermocouple detection, cold-junction failure alerts, and overrange monitoring enable proactive maintenance, preventing process disruptions caused by faulty sensors or module issues.
Application Fields & Cases
- Metal Manufacturing Furnace Temperature Monitoring: A steel mill deployed HONEYWELL 05701-A-0145 modules to measure furnace temperatures (K-type thermocouples) in its continuous casting process. The module’s cold-junction compensation ensured accurate readings, while open thermocouple detection alerted operators to faulty sensors before product quality was compromised.
- Chemical Plant Reactor Temperature Control: A petrochemical plant integrated HONEYWELL 05701-A-0145 into its Experion PKS system to monitor reactor jacket temperatures (J-type thermocouples) during batch production. The module’s high accuracy enabled precise control of cooling water flow, preventing reactor overheating and ensuring product consistency.
- Power Plant Boiler Tube Monitoring: A coal-fired power plant used HONEYWELL 05701-A-0145 to measure boiler tube metal temperatures (R-type thermocouples) and millivolt signals from strain gauges. The module’s diagnostic capabilities detected a failing thermocouple, allowing replacement during scheduled maintenance and avoiding unplanned outages.
Competitor Comparison
| Comparison Dimension | HONEYWELL 05701-A-0145 | Competitor 1 (Siemens SM 331 TC Module) | Competitor 2 (Allen-Bradley 1734-IT2I) |
|---|---|---|---|
| Number of Channels | 8 | 8 | 2 |
| Thermocouple Support | 8 types (J/K/T/E/R/S/B/N) | 6 types (J/K/T/E/R/S) | 8 types (J/K/T/E/R/S/B/N) |
| Accuracy (Thermocouple) | ±0.5°C (0-1000°C) | ±1.0°C (0-1000°C) | ±0.5°C (0-1000°C) |
| Millivolt Measurement | 0-100mV | No | No |
| Core Advantages | Millivolt + thermocouple support, wide temperature range | Siemens TIA ecosystem integration | Compact design, Rockwell compatibility |
Selection Suggestions & Precautions
- Selection Suggestions: HONEYWELL 05701-A-0145 is ideal for users requiring high-precision thermocouple/millivolt measurement (e.g., furnace temperature monitoring, strain gauge applications) with Honeywell or third-party control systems. For Siemens TIA users, SM 331 TC Module is preferred (thermocouple only); Allen-Bradley 1734-IT2I suits Rockwell systems (2 channels only).
- Precautions:
- Configure thermocouple type/millivolt range via DIP switches before installation—incorrect settings will cause measurement errors or failed cold-junction compensation.
- Use shielded thermocouple extension cables (matched to thermocouple type) to minimize noise and cold-junction errors, especially in long cable runs.
- Ensure proper grounding of the module and sensors to prevent ground loops, which can corrupt low-voltage millivolt/thermocouple signals.
- Calibrate cold-junction compensation annually (per Honeywell recommendations) to maintain thermocouple accuracy, especially in extreme temperature environments.
- Verify the module’s IP20 rating—install only in enclosed control cabinets to protect against dust and moisture.
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