Honeywell Pressure Transmitters ST800/ST700

SmartLine ST800/ST700 Pressure Transmitters

Absolute Pressure Transmitters

SmartLine STA800/STA700 are absolute pressure transmitters used for vacuum applications requiring high accuracy. They are ideal for low-pressure measurement in vacuum distillation columns. They are available in two variants: in-line and single-head.

Differential Pressure Transmitters

SmartLine STD800/STD700 are differential pressure transmitters that bring smart technology to a broad spectrum of measurement applications ranging from furnace combustion airflow rate to hydrostatic tank gauging. They are ideal for critical process loops and high-value applications such as custody transfer and energy and material balances.

Flange Mount Pressure Transmitters

SmartLine STF800/STF700 flange mount pressure transmitters may be installed directly onto a tank flange and offered with various tank connections. They are ideal for critical applications such as natural gas custody transfer and energy and material balances, where accuracy and stability are paramount. Four ranges of transmitters are available.

Flush Mount Pressure Transmitters

Smartline ST700 Flush Mount pressure transmitter can directly insert into processes using a 1” sleeve welded into the process line. They are for pressure measurement in the head box of pulp and paper plants. They are available from 0-1 to 0-100 psig and can be installed in various hazardous locations. The flush mounting capability eliminates the possibility of clogging, while the insertion design permits quick and trouble-free transmitter change-outs.

Gauge Pressure Transmitters

SmartLine STG800/STG700 gauge pressure transmitters are ideal for high-pressure measurements in boilers, fuel feeds, and tank-level measurement applications with a relatively high process temperature.

ST800 Dual Head gauge pressure transmitters are appropriate for applications requiring small flanges or 1/2” NPT connections, such as gauge pressure measurement of reaction vessels in the chemical industry and level applications with process temperatures of up to 302°F.

In-line transmitters are screwed directly onto a 1/2” male NPT nipple and can be installed in hazardous environments for accurate, repeatable pressure measurement. Typical applications include high-pressure measurement in boilers, fuel feeds, and high-pressure reaction vessels in the petrochemical and hydrocarbon recovery industries.

Remote Diaphragm Transmitters

SmartLine STR800/STR700 remote diaphragm seal transmitters accurately measure various corrosive or high-temperature process fluids applications. The transmitters are offered in the following ways:

• Flush flange seals
• Flange seal with extended diaphragm
• Pancake seals
• Sanitary seals
• Chemical tee Taylor wedge
• Seals with threaded process connections
• Saddle seals
• Calibration rings
• Stainless steel armor and PVC-coated, stainless steel armor capillaries
• 2” stainless steel nipples
• Welded meter body

SmartLine Application and Validation Tool

The SmartLine Application and Validation Tool helps users get the right instrument for their application. The tool enables error-free selection and validation of the device through efficient online collaboration. The tool documents your selection inputs and helps you share them with others. The ordered instrument arrives fully preconfigured, shortening the commissioning time. Learn more.

Resources & Downloads

• SmartLine Pressure Transmitters
• SmartLine Transmitters Family Brochure
• SmartLine Manifolds Specification

ST3000, 100, and 900 Series

The Honeywell SmartLine ST700 and ST800 pressure transmitter lines replace the ST3000, 100, and 900 Series. If you’re using ST3000 100 series transmitters, consider the ST800 for future units. If you’re using the ST3000 900 series, the ST700 will be your better fit.

SmartLine Manifolds

SmartLine Manifolds include various options in different configurations to suit pressure, differential pressure, and level measurement transmitters.

SmartLine manifolds come with built-in safety mechanisms and are factory leak tested and certified to ensure safe, reliable, and efficient operations and maintenance of process applications.

The manifolds are available as standalone parts or an integrated factory-tested certified assembly, along with SmartLine Pressure Transmitters. These essential accessories help minimize the total cost of ownership for the users, original equipment manufacturers (OEMs), and EPC contractors.​​​

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