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- Overview
- Specifications
- Description
- Applications
- Common Fault Handling
- FAQ
- Recommended Products
Overview
Place of Origin: |
USA |
Brand Name: |
HONEYWELL |
Model Number: |
MC-PRHM01 51404109-175 |
Packaging Details: |
Original new Factory Sealed |
Delivery Time: |
5-7 days |
Payment Terms: |
T/T |
Supply Ability: |
In stock |
Specifications
|
Model: |
MC-PRHM01 51404109-175 |
|
Product Type: |
Remote Hardened Low Level Multiplexer |
|
Dimensions: |
3 × 31.4 × 27.8 cm |
|
Weight: |
0.52 kg |
|
Input Channels: |
32 galvanically isolated (16 per remote FTA) |
|
Input Type: |
Thermocouple; Linear millivolts |
|
A/D Converter Resolution: |
15 bits |
|
Voltage Input Range: |
0–100 mV |
|
LSB (100 mV range): |
8 µV |
|
LSB (J/K/E thermocouples): |
8 µV |
|
LSB (T/B/S/R/R’ thermocouples): |
2 µV |
|
Common Mode Voltage: |
±30 VRMS continuous (no damage); ±200 V intermittent |
|
Crosstalk: |
≥120 dB (dc to 60 Hz) |
|
Input Impedance: |
≥10 MΩ |
|
Maximum Normal Mode Input: |
±30 VRMS (continuous, one channel at a time) |
|
Input Scan Rate: |
Each channel once per 4 seconds |
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Line Frequency Noise Cancellation: |
Configurable 50/60 Hz |
|
Hardware Accuracy: |
±0.075% FS |
|
Software Accuracy: |
0.1°C typical; 0.5°C max at 20°C |
|
Surge Withstand Capability: |
ANSI/IEEE C37.90.1-1978 |
|
CMRR: |
90 dB min (1000 Ω lead resistance); 120 dB min (0 Ω lead resistance) |
|
Reference Junction Accuracy: |
±1°C max (20–25°C ambient) |
|
Calibration Stability: |
±50 ppm/°C max |
|
Open Thermocouple Detection: |
≤1000 Ω good; ≥1200 Ω PV = NAN |
|
Max Loop Resistance: |
1000 Ω total |
|
Operating Temperature: |
-40°C to +85°C (Remote FTA); 0°C to +50°C (IOP & power adapters) |
|
Operating Humidity: |
10–100% condensing (Remote FTA); 10–90% non-condensing (IOP/adapters) |
|
Corrosives Rating: |
Gx (Remote FTA); G1 or G3 (IOP/power adapters depending on option) |
Description
The Honeywell MC-PRHM01 51404109-175 is a Remote Hardened Low Level Multiplexer. It switches and aggregates the minute signals generated by dispersed thermocouples or RTD sensors in harsh factory environments, transmitting the information to the control room via a single cable. This module is suitable for use in dusty, high-humidity areas with dispersed temperature measurement points.
Applications
Chemical Plants: Aggregate thermocouple signals from storage tanks and reactors to monitor feedstock temperature.
Power Plants: Transmit temperature data from boilers, steam pipelines, and bearing housings to prevent overheating.
Refineries: Collect high-temperature data from multiple stages of atmospheric/vacuum units and catalytic cracking towers to ensure processing safety.
Steel Mills: Track temperature changes in blast furnace walls, hot blast stoves, and ladles to avoid refractory burn-through.
Common Fault Handling
Channel PV shows NAN: The card checks disconnection each cycle. If thermocouple loop resistance >1000 Ω, check wiring; >1200 Ω is treated as open circuit and triggers NAN alarm.
Simultaneous loss of 16-channel group: Check remote FTA power supply and communication cables for failure or disconnection causing branch loss.
Periodic power-frequency noise in temperature signals: Check noise suppression settings and match hardware filter to grid frequency (50 Hz in China, 60 Hz for some equipment).
FAQ
Q: What are the channel count and input types of MC-PRHM01 51404109-175?
A: 32 isolated channels, supporting thermocouples and linear millivolt inputs.
Q: What are the resolution and voltage input range of MC-PRHM01 51404109-175?
A: 15-bit, 0–100 mV.
Q: What are the input impedance and hardware accuracy of MC-PRHM01 51404109-175?
A: ≥10 MΩ, accuracy ±0.075% FS.
Q: What are the scan rate and maximum loop resistance of MC-PRHM01 51404109-175?
A: One scan every 4 seconds, maximum loop resistance 1000 Ω.
Q: What is the operating temperature of the remote FTA for MC-PRHM01 51404109-175?
A: -40°C to +85°C.
