Honeywell 51309140-125 MU-TSTX03 Smart Transmitter Interface FTA, CE Compliant

Products Description

Honeywell 51309140-125 MU-TSTX03 new and original in stock

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Applications

• Smart transmitter integration — connecting HART-enabled pressure, temperature, flow, and level transmitters to the DCS for advanced diagnostics .

• Process industries — refining, petrochemicals, oil and gas, and power generation where high-integrity data acquisition is critical .

• Legacy TDC 3000 / TPS / Experion PKS maintenance — replacement and spare parts for existing STI installations.

• Field termination panels — routing serial communication alongside traditional 4–20 mA loops in shared marshalling cabinets .

FAQ

Q1: What is the Honeywell 51309140-125 (MU-TSTX03) used for?
It is a Smart Transmitter Interface Field Termination Assembly for Honeywell DCS systems. It provides an RS-485 serial communication link between smart field transmitters and the DCS controller, enabling digital access to process variables and diagnostic data .

Q2: What communication protocol does it use?
RS-485 differential serial communication, with data transfer rates up to 1 Mbps .

Q3: What is the power supply requirement?
The module operates on a regulated 5 VDC power supply and draws less than 0.5 W .

Q4: Is this module CE compliant and redundant?
The 51309140-125 is CE compliant and non-redundant . For the redundant/coated variant, refer to the 51309140-175 (MC-TSTX03) .

Q5: How many channels does it have?
Per Honeywell model tables, the MU-TSTX03 provides 16 channels with C-type terminals in a Size A form factor .

Q6: What is the operating temperature range?
-40 °C to +85 °C, suitable for harsh industrial environments when properly enclosed .

Q7: Can it be hot-swapped?
One source advises powering off the rack segment or isolating panel power before removing or inserting the FTA to prevent electrical arc damage and communication disruption . Do not assume hot-swap capability without official confirmation.

Q8: What are the weight and dimensions?
Weight is approximately 350 g . Dimensions are not consistently specified; the model table indicates Size A mounting .

Q9: Is this a current or legacy product?
The TDC 3000 / TPS / Experion PKS is a legacy/mature platform. The MU-TSTX03 is primarily available as spare or refurbished stock. Confirm current availability and lifecycle status with Honeywell or an authorized distributor.

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