Designed for seamless integration within legacy TDC 3000 and Experion safety or control architectures, this Honeywell MU-TAMR03 serves as a specialized Low Level Analog Multiplexer (LLMux) Field Termination Assembly (FTA) dedicated to RTD temperature sensor interfaces. Operating as a critical link between field-level RTDs and the Low Level Analog Input Multiplexer (LLMux) Input/Output Processor (IOP), this module enables high-density, millivolt-level temperature data acquisition. The assembly features robust compression terminals for point-to-point field wiring and is specifically engineered for non-redundant configurations in controlled control room environments.
| Model Number | Part Number | Terminal Type | Conformal Coating |
|---|---|---|---|
| MU-TAMR03 | 51309218-125 | Compression | No (Uncoated) |
| MC-TAMR03 | 51309218-175 | Compression | Yes (Conformally Coated) |
| MU-TAMR13 | 51309218-225 | Screw Terminal | No (Uncoated) |
| Manufacturer | Honeywell |
| Model Reference | MU-TAMR03 |
| Part Number | 51309218-125 |
| Module Type | Low Level Analog Input Multiplexer RTD FTA |
| Number of Channels | 16 Channels |
| Terminal Type | Compression Terminals |
| Redundancy Support | Not Supported (Single IOP Only) |
| Conformal Coating | No |
| CE Compliance | No |
| Operating Temperature | 0 to 60 degC |
| Country of Origin | USA |
| Shipping Weight (Calculated) | 2.5 kg / 5.5 lbs |
| Package Dimensions (Calculated) | 31.0 x 14.5 x 8.0 cm (12.2 x 5.7 x 3.1 in) |
The MU-TAMR03 routes 3-wire RTD connections from the field directly to the LLMux multiplexing circuitry. Each of the 16 channels requires three dedicated termination points to ensure accurate lead-wire resistance compensation.
| Terminal Node Name | Signal Assignment | Description |
|---|---|---|
| A | RTD Source (+) | Current excitation source line to the RTD sensor element. |
| B | RTD Sense (-) | Voltage sensing return path for lead-wire resistance calculation. |
| C | RTD Return / Shield | Common reference return and instrumentation shield grounding point. |
The 51309218-125 (MU-TAMR03) belongs to the non-conformally coated class of TDC 3000 assemblies. For harsh or corrosive petrochemical installations, engineers must specify the MC-TAMR03 (51309218-175), which incorporates a protective conformal coating layer. Additionally, if your facility standardizes on screw-type termination barriers rather than compression clamps, the MU-TAMR13 variant should be deployed instead.
Because this FTA is a non-redundant system, the loss of this module or its direct serial cable interface will cause the immediate drop of all 16 analog monitoring loops. Crucially, as an uncoated board, placing the MU-TAMR03 in an environment subject to condensing humidity or corrosive gases (such as hydrogen sulfide) will lead to early degradation of the analog multiplexing chips, resulting in erratic, drifting, or open-circuit RTD error statuses.
To maintain maximum accuracy, ensure all three wires of the RTD circuit have the identical physical resistance. Discrepancies in wire length or contact oxidation at the compression terminals will degrade the lead resistance compensation calculation inside the LLMux IOP. During commissioning, run high-quality shielded twisted-pair cables, and ensure the shield drain wire is terminated only at the designated FTA shield ground terminal to mitigate ground loop noise.
Before installing or servicing the FTA, verify that all system power sources associated with the IOP rack and field instrumentation are fully de-energized. Failure to isolate power paths can lead to short circuits, permanent damage to the multi-channel multiplexing circuitry, or false control loops in active processes.
Mount the FTA card securely to the cabinet DIN rail or standard mounting plate inside a dust-free, environmentally controlled enclosure.
Connect the dedicated LLMux serial interface cable from the FTA card socket to the corresponding channel connector on the non-redundant IOP card.
Strip field RTD cables back 6mm and insert individual conductors into the compression block terminals. Hand-tighten the retention screws firmly, ensuring no bare copper wire is exposed.
Global Express Shipping
Returns & Warranty
Manufacturer: Honeywell
Product No.: MU-TAMR03
Country of origin:United States
Product Type: PLC Analog Input Modules
Payment: T/T, Western Union
Weight: 5000g
Dimensions: 31.0 x 14.5 x 8.0 cm (12.2 x 5.7 x 3.1 in)
Shipping port: Xiamen
Warranty: 12 months
Designed for seamless integration within legacy TDC 3000 and Experion safety or control architectures, this Honeywell MU-TAMR03 serves as a specialized Low Level Analog Multiplexer (LLMux) Field Termination Assembly (FTA) dedicated to RTD temperature sensor interfaces. Operating as a critical link between field-level RTDs and the Low Level Analog Input Multiplexer (LLMux) Input/Output Processor (IOP), this module enables high-density, millivolt-level temperature data acquisition. The assembly features robust compression terminals for point-to-point field wiring and is specifically engineered for non-redundant configurations in controlled control room environments.
| Model Number | Part Number | Terminal Type | Conformal Coating |
|---|---|---|---|
| MU-TAMR03 | 51309218-125 | Compression | No (Uncoated) |
| MC-TAMR03 | 51309218-175 | Compression | Yes (Conformally Coated) |
| MU-TAMR13 | 51309218-225 | Screw Terminal | No (Uncoated) |
| Manufacturer | Honeywell |
| Model Reference | MU-TAMR03 |
| Part Number | 51309218-125 |
| Module Type | Low Level Analog Input Multiplexer RTD FTA |
| Number of Channels | 16 Channels |
| Terminal Type | Compression Terminals |
| Redundancy Support | Not Supported (Single IOP Only) |
| Conformal Coating | No |
| CE Compliance | No |
| Operating Temperature | 0 to 60 degC |
| Country of Origin | USA |
| Shipping Weight (Calculated) | 2.5 kg / 5.5 lbs |
| Package Dimensions (Calculated) | 31.0 x 14.5 x 8.0 cm (12.2 x 5.7 x 3.1 in) |
The MU-TAMR03 routes 3-wire RTD connections from the field directly to the LLMux multiplexing circuitry. Each of the 16 channels requires three dedicated termination points to ensure accurate lead-wire resistance compensation.
| Terminal Node Name | Signal Assignment | Description |
|---|---|---|
| A | RTD Source (+) | Current excitation source line to the RTD sensor element. |
| B | RTD Sense (-) | Voltage sensing return path for lead-wire resistance calculation. |
| C | RTD Return / Shield | Common reference return and instrumentation shield grounding point. |
The 51309218-125 (MU-TAMR03) belongs to the non-conformally coated class of TDC 3000 assemblies. For harsh or corrosive petrochemical installations, engineers must specify the MC-TAMR03 (51309218-175), which incorporates a protective conformal coating layer. Additionally, if your facility standardizes on screw-type termination barriers rather than compression clamps, the MU-TAMR13 variant should be deployed instead.
Because this FTA is a non-redundant system, the loss of this module or its direct serial cable interface will cause the immediate drop of all 16 analog monitoring loops. Crucially, as an uncoated board, placing the MU-TAMR03 in an environment subject to condensing humidity or corrosive gases (such as hydrogen sulfide) will lead to early degradation of the analog multiplexing chips, resulting in erratic, drifting, or open-circuit RTD error statuses.
To maintain maximum accuracy, ensure all three wires of the RTD circuit have the identical physical resistance. Discrepancies in wire length or contact oxidation at the compression terminals will degrade the lead resistance compensation calculation inside the LLMux IOP. During commissioning, run high-quality shielded twisted-pair cables, and ensure the shield drain wire is terminated only at the designated FTA shield ground terminal to mitigate ground loop noise.
Before installing or servicing the FTA, verify that all system power sources associated with the IOP rack and field instrumentation are fully de-energized. Failure to isolate power paths can lead to short circuits, permanent damage to the multi-channel multiplexing circuitry, or false control loops in active processes.
Mount the FTA card securely to the cabinet DIN rail or standard mounting plate inside a dust-free, environmentally controlled enclosure.
Connect the dedicated LLMux serial interface cable from the FTA card socket to the corresponding channel connector on the non-redundant IOP card.
Strip field RTD cables back 6mm and insert individual conductors into the compression block terminals. Hand-tighten the retention screws firmly, ensuring no bare copper wire is exposed.
Global Express Shipping
Returns & Warranty
Orders are processed and delivered Monday-Friday (excluding public holidays).
For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .
| Country of origin |
United States
|
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