Honeywell STT173-BS Smart Temperature Transmitter – STT 3000 Series
Imagine a critical process line where temperature readings drift undetected — a batch reactor overshoots its setpoint, a distillation column loses separation efficiency, or a heat exchanger silently fouls beyond recovery. Without a reliable, field-proven temperature transmitter at the heart of the loop, these failures cascade into unplanned shutdowns, product loss, and safety incidents. The Honeywell STT173-BS is engineered precisely to prevent this scenario, delivering continuous, accurate temperature data that process engineers and plant operators can trust around the clock.
Within Honeywell’s STT 3000 Smart Temperature Transmitter series, the STT173-BS occupies a core position as a versatile, HART-enabled field instrument designed for demanding industrial environments. The STT 3000 platform is one of the most widely deployed temperature transmitter families in global process industries, with installations spanning oil & gas, petrochemical, power generation, pulp & paper, and pharmaceutical manufacturing across more than 100 countries. The STT173-BS variant is specifically configured for standard DIN rail or direct-mount applications, offering a balance of measurement precision, communication flexibility, and long-term stability that makes it a benchmark choice for automation engineers worldwide.
Technical Specifications
- Model: STT173-BS
- Series: STT 3000 Smart Temperature Transmitter
- Brand: Honeywell Process Solutions
- Communication Protocol: HART (Highway Addressable Remote Transducer)
- Input Types: Thermocouple (TC), RTD (Pt100/Pt1000), mV, Ohm
- Output Signal: 4–20 mA analog with superimposed HART digital signal
- Power Supply: 12–42.4 VDC (loop-powered)
- Ambient Temperature Range: –40°C to +85°C (–40°F to +185°F)
- Accuracy: ±0.1°C typical (sensor-dependent)
- Housing: Compact DIN rail mountable enclosure
- Approvals: CE, ATEX (intrinsically safe variants available)
- Weight: Approx. 800 g (packaged)
Note: Specifications are based on Honeywell published data for the STT 3000 series. Always verify against the official datasheet for your specific application.
Key Features & Benefits
- HART Protocol Support: Enables two-way digital communication over the existing 4–20 mA loop, allowing remote configuration, diagnostics, and calibration without interrupting the process.
- Universal Sensor Input: Accepts a wide range of TC and RTD sensor types, reducing the need for multiple transmitter variants across a plant.
- High Measurement Accuracy: Delivers ±0.1°C typical accuracy, critical for tight process control in pharmaceutical and chemical applications.
- Loop-Powered Design: Eliminates the need for a separate power supply, simplifying installation and reducing wiring costs.
- Sensor Backup Function: Automatically switches to a backup sensor input upon primary sensor failure, maintaining process continuity.
- Long-Term Stability: Honeywell’s proven signal conditioning technology minimizes drift over multi-year service intervals.
- Wide Ambient Temperature Range: Operates reliably from –40°C to +85°C, suitable for outdoor installations and extreme climate environments.
- Easy Configuration: Compatible with Honeywell’s SFC (Smart Field Communicator) and standard HART handheld communicators for rapid commissioning.
Industry & Equipment Applications
- Oil & Gas: Wellhead temperature monitoring, pipeline heat tracing control, separator vessel temperature loops.
- Petrochemical & Refining: Distillation column temperature profiling, reactor temperature control, heat exchanger monitoring.
- Power Generation: Boiler feed water temperature, turbine bearing temperature monitoring, cooling water systems.
- Pharmaceutical & Biotech: Bioreactor temperature control, CIP/SIP process monitoring, clean room HVAC loops.
- Pulp & Paper: Digester temperature control, dryer section monitoring, black liquor evaporator loops.
- Food & Beverage: Pasteurization temperature verification, fermentation vessel monitoring, CIP temperature loops.
System Integration & Compatible Parts
The STT173-BS integrates seamlessly into Honeywell’s broader automation ecosystem and is compatible with a wide range of control system platforms:
- DCS Integration: Honeywell Experion PKS, TDC 3000, PlantScape — native HART I/O cards support direct integration.
- Third-Party DCS/PLC: Compatible with Emerson DeltaV, ABB 800xA, Siemens PCS 7, and Rockwell ControlLogix via HART multiplexers or HART-enabled I/O modules.
- HART Multiplexers: Works with Honeywell HART Multiplexer systems for large-scale asset management.
- Related Honeywell Products: STT350 (advanced diagnostics variant), STT850 (Foundation Fieldbus version), STT25S (compact head-mount transmitter).
- Sensor Accessories: Compatible with standard Pt100 RTD assemblies and Type K/J/T/E thermocouple elements per IEC 60584 and IEC 60751 standards.
Our Quality Assurance Process
At Konmask.com, every Honeywell STT173-BS unit we supply undergoes a rigorous multi-stage quality verification process before shipment:
- Source Verification: All units are sourced from authorized Honeywell distributors or directly from Honeywell’s certified supply chain, with full traceability documentation.
- Visual & Physical Inspection: Each unit is inspected for physical integrity, label authenticity, and correct model identification against the purchase order.
- Functional Pre-Check: Where applicable, units are powered up and HART communication is verified prior to packaging.
- Packaging Integrity: Products are packed in anti-static, shock-resistant packaging with desiccant to prevent moisture ingress during international transit.
- Documentation Package: Each shipment includes the original manufacturer’s certificate of conformance, calibration certificate (if applicable), and Konmask’s inspection report.
How to Order
- Submit your inquiry via the Contact Us form on Konmask.com or email support@konmask.com with your required quantity and delivery timeline.
- Our technical team will confirm stock availability, lead time, and provide a formal quotation within 24 business hours.
- Upon PO confirmation, we arrange quality inspection, export documentation, and international shipping via your preferred freight method (DHL, FedEx, sea freight, etc.).
- Track your shipment in real time with our logistics update service.
Minimum Order Quantity: 1 unit | Lead Time: Subject to stock availability — contact us for current lead times.
Why Choose Konmask.com?
- ✅ Specialized in Industrial Automation Components — PLC modules, DCS parts, temperature transmitters, and field instruments from leading global brands.
- ✅ Verified Supply Chain — We work exclusively with authorized distributors and certified suppliers to eliminate counterfeit risk.
- ✅ Technical Expertise — Our team includes experienced automation engineers who can assist with product selection, compatibility verification, and application support.
- ✅ Global Shipping — We export to over 50 countries with full customs documentation support.
- ✅ Responsive Service — Quotations within 24 hours, dedicated account management for repeat buyers.
- ✅ Competitive Pricing — Direct sourcing relationships allow us to offer market-competitive pricing on genuine OEM parts.
Frequently Asked Questions
Q: What is the difference between the Honeywell STT173-BS and the STT350?
A: The STT173-BS is a standard HART 4–20 mA temperature transmitter optimized for cost-effective, reliable temperature measurement. The STT350 adds advanced diagnostics capabilities including sensor drift detection and loop integrity monitoring, making it suited for safety-critical or high-availability applications.
Q: Is the STT173-BS compatible with Foundation Fieldbus or PROFIBUS?
A: No. The STT173-BS communicates via HART protocol over a 4–20 mA loop. For Foundation Fieldbus applications, Honeywell offers the STT850 series. For PROFIBUS PA, consult Honeywell’s current product portfolio for compatible variants.
Q: Can the STT173-BS be used in hazardous area (Ex) installations?
A: The STT 3000 series includes ATEX and IECEx certified variants for use in Zone 1/Zone 2 hazardous areas. Please confirm the specific approval markings on the unit’s nameplate and consult the relevant installation drawing before use in classified areas.
Q: How do I configure the STT173-BS in the field?
A: The STT173-BS can be configured using any HART-compatible handheld communicator (e.g., Emerson 475/375 Field Communicator) or via Honeywell’s SFC Smart Field Communicator. Configuration can also be performed remotely through a HART-enabled DCS or asset management system such as Honeywell’s AMS Device Manager.
Q: What is the warranty on Honeywell STT173-BS units supplied by Konmask.com?
A: All units supplied by Konmask.com are covered by Honeywell’s standard manufacturer warranty. Additionally, Konmask.com provides a 90-day quality guarantee covering any defects attributable to storage or handling prior to shipment. Contact support@konmask.com for warranty claims.
Q: Do you provide calibration certificates with the STT173-BS?
A: Calibration certificates are available upon request for units that have been factory-calibrated. Please specify this requirement at the time of inquiry so we can confirm availability with our supply chain.
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