Honeywell SmartLine STG800 Gauge Pressure Transmitter
Overview
The Honeywell SmartLine STG800 Gauge Pressure Transmitter is the flagship gauge pressure model in Honeywell’s next-generation SmartLine ST800 platform, delivering industry-leading accuracy, fast response time, and advanced diagnostics for critical process pressure measurement. Built around a piezoresistive sensor with on-chip temperature compensation, the STG800 covers pressure ranges from vacuum service up to 10,000 psi across a single modular platform, reducing the number of transmitter models a facility needs to stock and specify.
In Oman and the GCC, Seven Star LLC supplies the Honeywell SmartLine STG800 Gauge Pressure Transmitter on request, with manufacturer documentation, calibration support, and technical backing. Facilities across Muscat, Sohar, and Salalah can source Honeywell instrumentation through Seven Star LLC, with availability and lead time confirmed at quotation.
Measurement Principle
The Honeywell SmartLine STG800 measures gauge pressure using a piezoresistive silicon sensor with integrated on-chip temperature compensation, converting mechanical diaphragm deflection under process pressure into a precise electrical signal. On-chip compensation corrects for temperature-induced sensor drift in real time, allowing the STG800 to hold its accuracy of up to 0.0375% of span – with an optional 0.025% of span configuration – across wide ambient temperature swings typical of outdoor installations in the Gulf climate.
With a response time as fast as 80 milliseconds and rangeability up to 100:1 depending on model, the STG800 is well suited to fast pressure control loops as well as static high-pressure monitoring duty. Honeywell’s SIL 2/3 certified electronics continuously run NAMUR NE-107 extended diagnostics, flagging sensor drift, wiring faults, and out-of-range conditions well before they affect the measurement loop, and long-term stability rated at up to 0.015% of URL per year over 15 years keeps recalibration intervals long and predictable for maintenance planning.
Engineering Design of the Honeywell SmartLine STG800
The Honeywell SmartLine STG800 is built on a dual-seal design with wetted parts available in 316L stainless steel, Hastelloy C-276, Monel 400, tantalum, or gold-plated construction, covering everything from general utility service to highly corrosive chemical process streams. Process connections include ½ inch NPT (female and male), DIN 19213, 9/16-18 high-pressure cone and thread, and G ½-B male fittings, giving specifying engineers flexibility to match existing piping and instrument standards without custom adapters.
A modular local display option supports both simple alphanumeric readouts and an advanced graphics LCD showing trend and diagnostic information directly at the transmitter, reducing the need for a handheld communicator during routine field checks. The STG800 supports 4 to 20 mA analog output, Honeywell’s proprietary Digitally Enhanced (DE) protocol, HART 7.0, and FOUNDATION Fieldbus, and its SIL 2/3 certified, dual-seal electronics housing is rated for installation in classified hazardous areas across refineries, gas plants, and petrochemical facilities throughout Oman and the wider GCC.
Key Features
The Honeywell SmartLine STG800 Gauge Pressure Transmitter combines a wide pressure range platform with the diagnostics and materials flexibility demanded by modern process plants.
- The Honeywell SmartLine STG800’s piezoresistive sensor with on-chip temperature compensation delivers accuracy of up to 0.0375% of span, with an optional 0.025% configuration.
- Single modular platform covers pressure ranges from vacuum service up to 10,000 psi across five standard range codes.
- Response time as fast as 80 milliseconds supports fast-acting pressure control loops.
- SIL 2/3 certified electronics with NAMUR NE-107 extended diagnostics continuously monitor transmitter and sensor health.
- Long-term stability rated up to 0.015% of URL per year over 15 years reduces recalibration frequency.
- Wetted materials available in 316L stainless steel, Hastelloy C-276, Monel 400, tantalum, and gold-plated options for corrosive service.
- Supports 4-20 mA, Honeywell DE, HART 7.0, and FOUNDATION Fieldbus communication protocols.
- Modular alphanumeric or advanced graphics local display simplifies field configuration and troubleshooting.
Industrial Applications
Engineers across the region specify the Honeywell SmartLine STG800 for high-pressure measurement in boiler and fuel feed systems, tank level measurement in high-temperature process service, chemical reaction vessel gauge pressure monitoring, and general petrochemical and hydrocarbon recovery applications where process temperatures can reach 302°F (150°C). Its wide range coverage and corrosion-resistant wetted material options make it a practical single-platform choice for refineries, gas processing plants, and utility systems across multiple pressure duty classes.
In Oman and the GCC, Seven Star LLC supplies the SmartLine STG800 to engineering, procurement, and construction contractors, oilfield service companies, and plant maintenance teams across the Sultanate of Oman and the wider GCC. From the Sohar and Salalah free zones to upstream oil and gas facilities and offshore platforms in the Arabian Sea, Seven Star LLC supplies Honeywell SmartLine pressure transmitters with manufacturer documentation, calibration certificates, and responsive regional technical support.
Technical Specifications
The Honeywell SmartLine STG800 is available in multiple range codes and material options; the table below summarizes its core specifications.
| Parameter | Specification |
|---|---|
| Model | Honeywell SmartLine STG800 |
| Accuracy | Up to 0.0375% of span (0.025% option available) |
| Pressure Range | 0–50 psi up to 0–10,000 psi (model dependent) |
| Response Time | As fast as 80 milliseconds |
| Long-Term Stability | Up to 0.015% of URL per year over 15 years |
| Output Protocols | 4-20 mA, Honeywell DE, HART 7.0, FOUNDATION Fieldbus |
| Wetted Materials | 316L stainless steel, Hastelloy C-276, Monel 400, tantalum, gold-plated |
| Process Connections | ½ in NPT, DIN 19213, 9/16-18 cone & thread, G ½-B |
| Safety Certification | SIL 2/3 certified, NAMUR NE-107 extended diagnostics |
| Maximum Process Temperature | Up to 302°F (150°C) |
| Typical Applications | Boiler feed, tank level, chemical reaction vessels, petrochemical service |
Request a Quote for Honeywell SmartLine STG800
The Honeywell SmartLine STG800 can be supplied to Oman and GCC facilities, and a formal quotation can be requested directly from Seven Star LLC, with lead time confirmed at quotation, technical datasheet downloads, and full support from our instrumentation division. In Oman and the GCC, Seven Star LLC ensures every unit supplied has the correct range and material configuration, and provides the local technical support needed to keep critical pressure measurement loops running without interruption. Contact our sales engineering team today to specify the correct range, wetted material, and communication protocol for your application.
Browse the full Honeywell range or see more Pressure Instrumentation products supplied by Seven Star LLC in Oman and the GCC.
- datasheet Honeywell SmartLine STG800 Datasheet Download
Honeywell product families on this page
Open path infrared detection is represented by the Searchline Excel and the newer Searchline Excel Plus. Point detection includes the Sensepoint XCD in flammable and toxic versions, for example the SPXCDALMG1 hydrogen detector, the Sensepoint XRL and the XNX universal transmitter. The FS24X Plus is a triple infrared flame detector. Replacement cells such as the SR-X2V oxygen sensor and the SR-W-MP75C MICROpeL combustible sensor are also listed. Process instruments include SmartLine STG700 and STG800 gauge pressure transmitters, the STR82D remote seal transmitter and the VersaFlow Coriolis mass flow meter. Recorder consumables such as chart pens are also sourced.Where Honeywell detectors and transmitters are used
Gas and flame detectors guard wellheads, compressor stations, tank farms, loading bays, process units and utility buildings, and report to the fire and gas system. Open path units watch plant boundaries and long pipe racks. SmartLine transmitters and VersaFlow meters measure pressure and flow in refining, gas processing, chemicals and power.Ordering Honeywell gas detection parts: what we need
Send the full part number from the label, such as SPXCDALMG1 or 02104-N-XSSA, and the serial number. For gas detectors state the target gas and measuring span, housing material, cable entry thread, output (4-20 mA, relays, Modbus) and the approval required. For replacement sensors name the detector model they go into. For SmartLine transmitters send the complete model selection string.Browse Honeywell products by category: Fire & Gas Detector, Vibration, Flowmeters, Pressure Instrumentation, Temperature Instrumentation.
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