Honeywell TT173-BS Temperature Transmitter

Product Details

TT173-BS Product Description

The Honeywell STT173-BS is a HART-enabled smart temperature transmitter engineered for seamless integration within the Honeywell STT3000 series control architecture. Designed for demanding industrial environments — including petrochemical processing, power generation, water treatment, and advanced manufacturing — this transmitter delivers precise, stable temperature signal conditioning across multi-loop control systems. Its system-matched design ensures direct compatibility with Honeywell's distributed control infrastructure, reducing commissioning time and supporting long-term operational reliability under a 12-Month Warranty with full Contextual Integration support.

Within a complete Honeywell-based automation architecture, the STT173-BS operates as a critical node in the field instrument layer, feeding calibrated temperature data upward through the signal chain to the control and supervisory layers. Its HART communication capability allows simultaneous analog process control and digital diagnostics without interrupting the live 4–20 mA loop — a key advantage in high-availability plant environments.

In a typical STT3000 deployment, the STT173-BS pairs directly with the Honeywell HC900 Hybrid Controller or Experion PKS C300 Controller at the control layer, where temperature setpoints and PID loop parameters are managed. At the I/O layer, the transmitter connects through Honeywell XLIM I/O Modules or Series 2 I/O Cards, which aggregate multi-channel analog inputs and route them to the DCS backplane. For installations requiring intrinsic safety barriers, the Honeywell STT350 Safety Transmitter or dedicated Zener Barrier / Galvanic Isolator modules are inserted between the field device and the marshalling cabinet to maintain SIL 2 loop integrity.

At the communication layer, HART data from the STT173-BS is extracted via a Honeywell HART Multiplexer (HM Series) or a third-party HART-to-Modbus gateway, enabling asset management software such as Honeywell Field Device Manager (FDM) to perform remote calibration, loop diagnostics, and predictive maintenance scheduling without physical access to the field device. This integration is particularly valuable in geographically distributed installations such as offshore platforms, pipeline stations, and large-scale chemical complexes.

For power distribution within the control cabinet, the STT173-BS loop is typically powered through a Honeywell 24 VDC Loop Power Supply or a redundant Phoenix Contact QUINT Power Supply, ensuring stable loop voltage even during grid fluctuations. At the HMI layer, process temperature trends from the STT173-BS are visualized on Honeywell Experion Station or Honeywell HMIWeb Display Builder panels, providing operators with real-time thermal profiling across multiple process zones. Terminal connections at the marshalling cabinet are managed through Weidmüller or Phoenix Contact terminal blocks, which support modular wiring and rapid field replacement without loop interruption.

All components in this architecture — from the STT173-BS field transmitter through the I/O modules, controller backplane, and HMI workstation — are stocked and supplied by NANKMOS with pre-shipment functional testing, full documentation packages, and 12-Month Warranty coverage, ensuring system-level consistency from procurement through commissioning.

Petrochemical & Refining: The STT173-BS is widely deployed in crude distillation columns, heat exchanger networks, and reactor temperature monitoring loops where multi-point RTD inputs and SIL 2 loop integrity are mandatory. Its explosion-proof housing (ATEX Zone 1/2) and HART diagnostics allow continuous health monitoring of temperature loops in hazardous areas without process shutdown.

Power Generation: In coal-fired, gas turbine, and combined-cycle power plants, the STT173-BS monitors steam temperature, turbine bearing temperatures, and boiler feed water conditions. Integration with the plant DCS via HART ensures that temperature excursions trigger automated protective responses through the burner management system (BMS) and turbine control system (TCS).

Water & Wastewater Treatment: Municipal and industrial water treatment facilities use the STT173-BS for monitoring process temperatures in biological reactors, sludge digesters, and UV disinfection systems. Its IP67 enclosure and corrosion-resistant housing make it suitable for high-humidity, chemically aggressive environments.

Mining & Metallurgy: In ore processing, smelting, and electrolytic refining operations, the STT173-BS provides reliable temperature feedback for furnace control, cooling water circuits, and electrolyte bath monitoring. Its wide ambient temperature tolerance (–40°C to +85°C) supports outdoor and underground installations without performance degradation.

Semiconductor & Electronics Manufacturing: Precision temperature control in diffusion furnaces, chemical vapor deposition (CVD) chambers, and cleanroom HVAC systems demands the sub-0.1°C accuracy and long-term drift stability that the STT173-BS delivers. HART-based remote calibration eliminates the need for manual field access in cleanroom-classified zones.

Packaging & Food Processing: The STT173-BS supports CIP (Clean-in-Place) temperature validation, pasteurization loop control, and cold chain monitoring in food and beverage production lines. Its FDA-compatible stainless steel housing option and hygienic process connections meet GMP and HACCP documentation requirements.

Q1: Is the Honeywell STT173-BS directly compatible with Experion PKS and TDC 3000 DCS platforms without additional signal conditioning? Yes. The STT173-BS outputs a standard 4–20 mA HART signal that is natively accepted by Honeywell Experion PKS analog input cards (e.g., HLAI, Series C I/O) and TDC 3000 High-Level Analog Input (HLAI) modules. No additional signal conditioning or converter is required for standard loop configurations. For SIL 2 applications, a certified safety barrier or galvanic isolator should be inserted per the loop safety requirements document. NANKMOS provides full wiring diagrams and loop documentation upon request.

Q2: Can the STT173-BS be installed in a mixed-vendor control architecture alongside Siemens SIMATIC or ABB 800xA systems? Yes. Because the STT173-BS communicates via the universal 4–20 mA HART standard, it integrates with any DCS, PLC, or SCADA platform that supports analog input cards with HART pass-through capability. For Siemens SIMATIC S7-300/400/1500 or ABB 800xA systems, a HART-to-PROFIBUS or HART-to-PROFINET gateway (e.g., Pepperl+Fuchs HiDMux2700 or Softing FG-100) enables full digital asset management from the host system. NANKMOS can advise on gateway selection and configuration based on your specific architecture.

Q3: What does the 12-Month Warranty cover, and how does NANKMOS support long-term maintenance and spare parts availability? NANKMOS provides a 12-Month Warranty on all Honeywell STT173-BS units covering manufacturing defects, functional failures under normal operating conditions, and calibration drift beyond published specifications. Each unit undergoes pre-shipment functional testing including loop calibration verification, HART communication check, and enclosure integrity inspection. For long-term maintenance, NANKMOS maintains buffer stock of STT173-BS units and compatible STT3000 series accessories to support rapid replacement in critical process environments. Extended support agreements and multi-unit blanket orders are available for plant-wide standardization programs. Contact [email protected] for spare parts planning and warranty claim procedures.