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Honeywell MC-TAMR04 51305907-175 UCN Low Level Analog Input Multiplexer

Honeywell MC-TAMR04 51305907-175 UCN Low Level Analog Input Multiplexer

Item NO.: 3534320
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Detail

  • Product NameHoneywell MC-TAMR04 51305907-175 UCN Low Level Analog Input Multiplexer
  • Item NO.3534320
  • Weight2.0000 kg = 4.4092 lb = 70.5479 oz
  • CategoryDCS
  • BrandHoneywell
  • Creation Time2026-02-02
  • Honeywell UCN Low Level Analog Input Multiplexer

MC-TAMR04 (Honeywell)

Product Identification

Officially documented as MC-TAMR04, this is the LLMUX2 generation module for low-level RTD input expansion in Honeywell Experion PMIO / C-series style architectures.

Manufacturer

Honeywell

Series / Type

LLMUX2 RTD FTA, Compression Terminals, Single IOP Interface

Part Number (CE)

51305907-175

Channels / Mounting

16 channels, Mounting Size B

Engineering Data

Specification item Official statement / range
Input technology LLMUX2 RTD Field Termination Assembly (FTA) for 16 low-level RTD channels.
Connector / terminal style 3-pin compression-terminals are supplied for field wiring in the replacement table.
Interface architecture Single IOP interface.
Mounting and size Mounting size B in Honeywell PMIO hardware planning references.
Reliability update LLMUX2 RTD architecture states increased reliability and solid-state relays replacing older mercury relay designs.
Environmental rating Conformally coated version in CE-compliant configuration.
Included shipping items 3-pin connectors (x16) and 6-pin connector (x1) are listed as supplied with the module order.
Replaced legacy devices Directly replaced from older LLMUX RTD FTAs in documented tables.
Engineering values here are documented from Honeywell official hardware and manual references for MC-TAMR04. For final project validation, confirm with the exact revision of your Experion PMIO or C-series documentation pack.

Functions

  • 16-channel low-level RTD input multiplexing in a compact FTA format.
  • Compatible with single IOP channel architecture and module backplane planning workflows.
  • Supports migration from legacy LLMUX RTD variants through defined replacement mapping.
  • Maintains conformally coated installation for improved board-level robustness.
  • Uses direct replacement approach to reduce relay-contact sensitivity concerns in existing RTD conversion paths.

Applications

Process temperature measurement

RTD loops requiring stable low-level signal acquisition with predictable module mapping.

Brownfield expansion

Channel replacement or expansion where legacy LLMUX RTD units are already in use.

Plant modernization

Step migration projects needing CE compliant and conformal-coated RTD field cards.

New build standardization

Consistent RTD termination and compression-terminal strategy across new card frames.

Actual fit must still follow control system project design documents (loop list, cabinet load, IOP channel mapping, and calibration standards).

Lifecycle

Lifecycle topic Official status / notes
Replacement path LLMUX2 RTD FTA (MC-TAMR04) is defined as a direct replacement for MC-TAMR02 / MC-TAMR03 RTD variants.
Compatibility migration level Manual tables show replacement for both non-CE and CE compliant previous models.
Discontinuation date No dedicated public final end-of-manufacture date for MC-TAMR04 is shown in the retrieved official tables.
Full replacement or partial change Recommended as upgrade/replacement for legacy RTD FTAs; functional equivalency still requires I/O channel and wiring validation.
Key replacement checks Connector type, channel assignment, local wiring policy, and existing IOP capacity should be verified before cutover.
Stock action For phased replacement programs, keep existing legacy modules until migration windows with spare parts and test evidence are approved.
For official final lifecycle confirmation (EOL / last-time-to-buy), request the Honeywell current support bulletin for the exact part number before making long-term procurement commitments.

Related Products

MC-TAMR02

Legacy LLMUX RTD FTA replaced by MC-TAMR04 in official Honeywell mapping.

MC-TAMR03

Legacy LLMUX RTD FTA replaced by MC-TAMR04 (same replacement group).

MC-TAMT04

TC-side sibling module (LLMUX2 TC generation), same frame family for different sensor type.

FAQ 

Q1: Is MC-TAMR04 a new family or a migration model?
A1: It is the LLMUX2 RTD generation and is officially used as a direct replacement for prior LLMUX RTD FTAs.
Q2: How many channels does MC-TAMR04 support?
A2: 16 channels, according to Honeywell hardware planning references.
Q3: Can it replace both CE and non-CE old RTD FTAs?
A3: Yes, documented tables indicate replacement across both versions.
Q4: What is included in the shipment package?
A4: The part list includes the module and compression terminal connectors (3-pin set and 6-pin set), based on Honeywell replacement tables.
Q5: Can I directly swap without changing cabinet logic?
A5: Mechanical replacement is straightforward by product family, but logic and channel validation must be checked in project configuration.

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