Honeywell,MC-PRHM01 51404109-175
Honeywell,MC-PRHM01 51404109-175
Honeywell,MC-PRHM01 51404109-175
Honeywell,MC-PRHM01 51404109-175
Honeywell,MC-PRHM01 51404109-175
Honeywell,MC-PRHM01 51404109-175
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MC-PRHM01 51404109-175

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The Honeywell MC-PRHM01 51404109-175 is a Conformally Coated Remote Hardened Multiplexer (RHMUX) Input/Output Processor (IOP) designed for the Honeywell High-Performance Process Manager (HPM) system.
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Technical specifications for MC-PRHM01 51404109-175

  • Manufacturer:
    Honeywell
  • Part Number:
    MC-PRHM01 51404109-175
  • Product Family:
    Honeywell TPS Series
  • Product Type:
    Remote Hardened Low Level Multiplexer (RHMUX)
  • Input Channels:
    32 (when connected to two RHMUX FTAs)
  • Supported Signal Types:
    0 to 100 mV, Thermocouples (TC) - RTD inputs not supported
  • Compatible FTA:
    MC-GRMT01 (RHMUX TC FTA with Local CJR)
  • Power Adapters:
    MC-GRPA01 (Intrinsically Safe) or MC-TRPA01 (Non-Incendive)
  • Current Consumption:
    100 mA (at 24 Vdc)
  • Max Cable Length (IOP to Power Adapter):
    50 meters (164 feet)
  • Max Cable Length (Power Adapter to FTA):
    2,000 meters (6,560 feet)
  • Weight:
    0.52 kg
  • Estimated shipping dimensions:
    3x31.4x27.8cm
  • Tariff Code:
    8471499100
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Applications Performance & Efficiency Environmental Ratings

Features:

  • Ruggedized for Harsh and Hazardous Environments
  • Long-Distance Remote I/O Capability
  • High System Availability with IOP Redundancy
The Honeywell MC-PRHM01 51404109-175 is conformally coated to protect against corrosion, humidity, and chemical gases (G3 rating). It is approved for Intrinsically Safe (IS) and Non-Incendive (NI) applications, allowing direct mounting in Class I, Division 1 hazardous locations when used with the correct power adapter.

This RHMUX IOP can be located up to 2,000 meters (6,560 feet) from its field termination assembly via a single cable, enabling efficient process monitoring in remote or distributed sites without requiring additional controllers or repeaters.

The module fully supports IOP redundancy, ensuring continuous operation. A secondary Honeywell MC-PRHM01 51404109-175 can be added to seamlessly take over signal acquisition if the primary IOP fails, minimizing process downtime.

The MC-PRHM01 51404109-175 Honeywell Remote Hardened Low Level Multiplexer (RHMUX) may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Honeywell MC-PRHM01 51404109-175 Remote Hardened Low Level Multiplexer (RHMUX) Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Honeywell MC-PRHM01 51404109-175 Remote Hardened Low Level Multiplexer (RHMUX)

General

  • Manufacturer Honeywell
  • Model MC-PRHM01 51404109-175
  • Condition New Original ready stock
  • Product Family MC-PLAM02,MC-PDOY22,MC-PPIX02
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Oil & Gas Upstream/Midstream: Monitoring wellhead temperatures, pipeline inlet/outlet temperatures, and separator skids in remote, unstaffed locations where long cable runs are required.
  • Petrochemical & Refining: Acquiring thermocouple signals from distillation columns and reactors located in Class I, Division 1 hazardous areas using the Intrinsically Safe (IS) power adapter.
  • Pharmaceutical & Fine Chemical: Providing galvanic isolation for temperature sensors in stainless steel reactors, ensuring safety in Zone 0/1 environments and maintaining signal integrity.
  • Heavy Industry & Power Generation: Installing the remote FTA close to turbines or kilns in high-electrical-noise environments, while keeping the IOP in a controlled central cabinet up to 2 km away.
  • True Remote I/O Architecture: The 2,000-meter (6,560-foot) cable distance capability between the FTA and IOP eliminates the need for remote instrument cabins, reducing infrastructure and cabling costs.
  • High Channel Density: A single Honeywell MC-PRHM01 51404109-175 supports up to 32 thermocouple inputs, maximizing I/O count per card slot and improving cabinet space efficiency.
  • Low Power Consumption: Consuming only 100 mA at 24 Vdc, the module places a minimal load on the system power supply, allowing more power budget for other field devices or FTAs.
  • Reliable Signal Acquisition: The system is designed specifically for 0 to 100 mV and thermocouple inputs, ensuring high accuracy and noise immunity for low-level signals often susceptible to interference.
  • Conformal Coating (G3 Rating): The Honeywell MC-PRHM01 51404109-175 is conformally coated, protecting the circuitry from corrosion in harsh environments defined by ANSI/ISA-S71.04 (e.g., high concentrations of H2S, SO2, Cl2).
  • Hazardous Area Certification: When paired with the MC-GRPA01 (IS) or MC-TRPA01 (NI) power adapters, the overall system is FM-approved for use in Class I, Division 1 & 2, Groups A, B, C, D locations.
  • Remote FTA Enclosure: The associated FTA (MC-GRMT01) must be mounted in a NEMA 4 or 4X sealed enclosure (e.g., MU-CMSC03 or MU-CMSS03) provided by Honeywell to maintain its hazardous location approvals and withstand wet or corrosive conditions.
  • Wide Operating Temperature for FTA: While the IOP is for cabinet use, the remote FTA, when housed in its certified enclosure, is designed for a wide temperature range and can operate in condensing atmospheres, suitable for direct attachment to process equipment.
Description
The Honeywell MC-PRHM01 51404109-175 is a specialized IOP card that forms the core of an RHMUX subsystem, enabling reliable process signal acquisition in locations where standard control room equipment cannot be placed. It is designed to interface with either one or two MC-GRMT01 RHMUX Thermocouple FTAs, providing a total of 32 input channels for millivolt or thermocouple signals. This IOP features a conformal coating, making it resistant to corrosive atmospheres classified as G3 (harsh) under ANSI/ISA-S71.04 standards, essential for long-term reliability in chemical or offshore applications.

This RHMUX IOP works in conjunction with a power adapter (MC-GRPA01 for Intrinsically Safe or MC-TRPA01 for Non-Incendive applications) to provide galvanic isolation between the hazardous field area and the safe-side control system. The architecture allows the FTA to be located up to 2,000 meters (6,560 feet) away from the IOP, offering significant flexibility in placing the acquisition point close to the sensor. For CE-compliant installations, specific shielded cables and ferrite beads are required to meet EMC directives.

The Honeywell MC-PRHM01 51404109-175 supports redundant IOP configurations to maximize system uptime. In a redundant setup, two IOPs can be connected to the same power adapter and FTAs, ensuring seamless process data acquisition in the event of a primary IOP failure. It consumes only 100 mA of current from a 24 Vdc power source and is compatible only with RHMUX series components, not with the standard LLMux (Low Level Multiplexer) assemblies.
Alternative Names
MC PRHM01 51404109-175 MC-PRHM01 51404109 175 MC PRHM01 51404109 175
Technical notes
The Honeywell MC-PRHM01 51404109-175 must be used exclusively with RHMUX components (FTA and Power Adapter) and is not compatible with LLMux assemblies. For CE compliance, a shielded IOP to FTA cable (model MU-KFTSxx) is mandatory, and a ferrite shield or beads must be installed on the power adapter to FTA cable inside the remote enclosure.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What is the main application of the Honeywell MC-PRHM01 51404109-175?
The Honeywell MC-PRHM01 51404109-175 is designed for acquiring low-level analog signals, specifically thermocouples, in remote, harsh, or hazardous environments such as oil & gas pipelines, petrochemical plants, and offshore platforms where the control room is located far from the field sensors.
Can I use this RHMUX IOP with other standard Honeywell FTAs?
No. The Honeywell MC-PRHM01 51404109-175 is only compatible with RHMUX series components, specifically the MC-GRMT01 FTA and either the MC-GRPA01 or MC-TRPA01 Power Adapters. It is not compatible with LLMux (Low Level Multiplexer) assemblies or standard non-isolated FTAs.
What are the diagnostic and monitoring capabilities of this module?
As an IOP within the HPM system, the Honeywell MC-PRHM01 51404109-175 is monitored by the High-Performance Process Manager Module (HPMM). The system can detect IOP failures, and in a redundant configuration, the status of the primary (A) and secondary (B) IOPs is tracked. Line fault detection (open/short circuit) for field wiring is handled by the FTA and power adapter, not the IOP itself.
What are the environmental limits for this IOP?
Due to its conformal coating, the Honeywell MC-PRHM01 51404109-175 is rated for a G3 (harsh) environment as defined by ANSI/ISA-S71.04, making it resistant to high humidity and airborne contaminants like H2S, SO2, and Cl2. For the remote FTA, which must be housed in a NEMA 4/4X enclosure, the operating temperature range is wider and can tolerate condensing atmospheres.

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