Honeywell SmartLine STG700 Gauge Pressure Transmitter
Overview
The Honeywell SmartLine STG700 Gauge Pressure Transmitter is part of Honeywell’s SmartLine ST700 pressure transmitter family, engineered to meet demanding industry requirements for performance, stability, reliability, and rangeability. Covering pressure ranges from 0-50 psi up to 10,000 psi across its STG730 through STG79L model variants, the STG700 is well suited to applications ranging from high-pressure boiler and fuel-feed measurement to tank level monitoring in processes with elevated temperatures.
Seven Star LLC supplies the Honeywell SmartLine STG700 as an experienced supply partner to process industries across Oman and the GCC, including oil and gas, petrochemicals, and power generation facilities that require dependable, SIL-rated pressure instrumentation. Every transmitter supplied by Seven Star LLC comes with manufacturer certification documentation and applications support for installations in Muscat, Sohar, and Salalah.
Measurement and Operating Principle
The STG700 uses piezoresistive sensor technology combined with on-chip temperature compensation, providing high accuracy and stable performance across a wide range of application pressures and process temperatures. This sensing approach minimizes measurement drift over time and delivers the fast response needed for tight process control loops, with response times as fast as 100 milliseconds.
Electrical output is available in both digitally enhanced (DE) protocol at 15 to 49.3 VDC supply and HART protocol at 10.8 to 42.4 VDC supply, giving integrators flexibility when connecting to Honeywell Experion or third-party DCS and PLC systems. The transmitter’s dual-seal design and NAMUR NE-43 compliance support robust fault diagnostics and predictable failure-mode behavior in safety-instrumented systems.
Engineering Design of the Honeywell SmartLine STG700
The STG700 family spans multiple pressure ranges to match specific application needs: STG730/STG735/STG73L/STG73S cover 0-50 psi (0-3.5 bar), STG740/STG745/STG74L/STG74S cover 0-500 psi (0-35 bar), STG770/STG77L cover 0-3000 psi (0-210 bar), STG78L extends to 6000 psi (420 bar), and STG79L reaches 10,000 psi (690 bar). This broad rangeability allows a single transmitter platform to be specified across boiler feedwater, hydraulic, and high-pressure process applications without switching product lines.
World-class overpressure protection and SIL 2/3 certification with IEC 61508 compliance make the STG700 suitable for safety-instrumented system duties, while a comprehensive approvals portfolio – FM, CSA, ATEX, IECEx, NEPSI, KOSHA, EAC, CCoE, UATR, SAEx, INMETRO, and marine classifications from ABS, BV, DNV, KR, and LR – supports deployment across hazardous-area and marine installations throughout Oman’s industrial and offshore sectors. The transmitter connects via 1/2 in NPT (female/male) process connections for straightforward field installation.
Key Features
- Piezoresistive sensor with on-chip temperature compensation
- Pressure ranges from 0-50 psi up to 10,000 psi across model variants
- SIL 2/3 certified with IEC 61508 compliance and world-class overpressure protection
- Dual-seal design with NAMUR NE-43 compliance
- Response time as fast as 100 milliseconds
- HART and Digitally Enhanced (DE) protocol output options
- Extensive global hazardous-area and marine approvals (FM, CSA, ATEX, IECEx, ABS, DNV, and more)
- 1/2 in NPT female/male process connections
Industrial Applications
The SmartLine STG700 is widely applied across Oman’s oil and gas, petrochemical, and power generation sectors for high-pressure measurement in boilers and fuel feed systems, tank level measurement in elevated-temperature processes, and general gauge pressure monitoring throughout production and utility systems. Its SIL 2/3 certification and broad hazardous-area approvals make it a preferred choice for safety-instrumented pressure loops at refineries and gas processing plants in Sohar and Salalah.
As a trusted supplier of Honeywell products, Seven Star LLC supports Omani and GCC operators with STG700 transmitters correctly specified for the required pressure range and hazardous-area classification, with manufacturer documentation and local applications assistance. This genuine relationship ensures pressure instrumentation deployed across Muscat and the wider region meets both Honeywell factory specification and regional process safety requirements.
Technical Specifications
| Model | Honeywell SmartLine STG700 (STG730–STG79L variants) |
|---|---|
| Measurement Principle | Piezoresistive sensor with on-chip temperature compensation |
| Pressure Range | 0-50 psi (3.5 bar) up to 10,000 psi (690 bar), model dependent |
| Safety Certification | SIL 2/3, IEC 61508 |
| Hazardous Area Approvals | FM, CSA, ATEX, IECEx, NEPSI, KOSHA, EAC, CCoE, UATR, SAEx, INMETRO |
| Marine Approvals | ABS, BV, DNV, KR, LR |
| Response Time | As fast as 100 ms |
| Supply Voltage | DE: 15–49.3 VDC / HART: 10.8–42.4 VDC |
| Process Connection | 1/2 in NPT (Female/Male) |
Why Choose Seven Star LLC for Honeywell SmartLine Pressure Transmitters
A gauge pressure transmitter earns its keep only when its range, accuracy class, and hazardous-area certification are matched to the actual loop it serves, since an over-ranged transmitter reads imprecisely at typical operating pressure while an under-ranged one risks overpressure damage and premature sensor failure during process upsets. Seven Star LLC confirms the correct SmartLine STG700 range and certification against your specific application before shipment, drawing on our trusted Honeywell suppliership across Oman and the wider GCC. We also support process plants across Muscat, Sohar, and Salalah standardizing their pressure instrumentation fleet on the SmartLine platform by coordinating batch procurement and consistent configuration, so spare transmitters remain interchangeable across multiple loops during future maintenance, and our technical team is available to advise on HART versus fieldbus communication choices depending on your existing DCS integration and the communication protocols already standardized across your plant.
Contact Seven Star LLC today to request a quotation for the Honeywell SmartLine STG700 Gauge Pressure Transmitter with correct hazardous-area certification and expert technical support for pressure measurement projects across Oman and the GCC.
Related Products
- Yokogawa EJA110E Differential Pressure Transmitter (DPharp Sensor)
- Honeywell STR82D-21CS000-00000000 SmartLine Remote Seal Pressure Transmitter
- VEGA VEGABAR 82 Process Pressure Transmitter
- Ashcroft 2089 Precision Digital Test Gauge
- Rosemount 3051S Series of Instrumentation
- Rosemount 3051 Pressure Transmitter
- Datasheet Honeywell SmartLine STG700 Gauge Pressure Transmitter 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.
Reviews
There are no reviews yet.