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Differential Pressure Transmitter - SmartLine ST700

Brand: Honeywell International Inc
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SmartLine® ST700 Differential Pressure Transmitters bring smart technology to a wide spectrum of measurement applications ranging from furnace combustion airflow rate to hydrostatic tank gauging.

The differential pressure transmitters can be used with any primary flow element to provide proven, repeatable flow measurement. 

You can also select and configure your SmartLine Pressure Transmitter using the Application and Validation Tool. Click on the box below to experience the tool.

What Is It?
ST700 Differential Pressure Transmitters are ideal for critical process loops and high-value applications such as custody transfer, and energy and material balances.
Features
  • Accuracies up to 0.05% of span standard & 0.04% of span optional
  • Stability up to 0.02% of URL per year for 10 years
  • Automatic Static-Pressure & temperature compensation
  • Rangeability up to 100:1
  • Response times as fast as 100 ms
  • Alphanumeric display capabilities
  • External zero, span, & configuration capability
  • Polarity-insensitive electrical connections
  • Comprehensive on-board diagnostic capabilities
  • Integral Dual Seal design for highest safety based on ANSI/NFPA 70-202 and ANSI/ISA 12.27.0
  • World-class overpressure protection
  • Full compliance to SIL 2/3 requirements.
  • Modular design characteristics
  • Available with additional 4-year warranty
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SmartLine® ST700 Differential Pressure Transmitters bring smart technology to a wide spectrum of measurement applications ranging from furnace combustion airflow rate to hydrostatic tank gauging.

The differential pressure transmitters can be used with any primary flow element to provide proven, repeatable flow measurement. 

You can also select and configure your SmartLine Pressure Transmitter using the Application and Validation Tool. Click on the box below to experience the tool.

What Is It?
ST700 Differential Pressure Transmitters are ideal for critical process loops and high-value applications such as custody transfer, and energy and material balances.
Features
  • Accuracies up to 0.05% of span standard & 0.04% of span optional
  • Stability up to 0.02% of URL per year for 10 years
  • Automatic Static-Pressure & temperature compensation
  • Rangeability up to 100:1
  • Response times as fast as 100 ms
  • Alphanumeric display capabilities
  • External zero, span, & configuration capability
  • Polarity-insensitive electrical connections
  • Comprehensive on-board diagnostic capabilities
  • Integral Dual Seal design for highest safety based on ANSI/NFPA 70-202 and ANSI/ISA 12.27.0
  • World-class overpressure protection
  • Full compliance to SIL 2/3 requirements.
  • Modular design characteristics
  • Available with additional 4-year warranty
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Specifications

Brand

Certifications & Approvals

  • FM
  • CSA
  • ATEX
  • IECEx
  • INMETRO
  • NEPSI
  • EAC
  • SIL

Communication

  • HART

Pressure Range

  • STD720/STD725: -400 to 400 inH₂O (-1000 to 1000 mbar)
  • STD730/STD735: -100 to 100 psi (-7.0 to 7.0 bar)
  • STD770/STD775: -3000 to 3000 psI (-210 to 210 bar)

Accuracy

  • 0.065%

Ambient Operating Temperature

  • -40° to 85° (-40° to 185° F)

Transportation/Storage Temperature

  • -55° to 120° C (-67° to 248° F)

Humidity

  • 0 to 100 % Relative Humidity

Supply Voltage

  • 10.8-42.4 Vdc at Terminals (IS Versions Limited to 30 Vdc)

Load Resistance

  • 0 to 1,440 ohms

Maximum Allowable Working Pressure

  • 4,500 psi (310 bar)

Barrier Diaphragms Material

  • 316L Stainless Steel, Hastelloy C-276

Process Head Material

  • 316 Stainless Steel, Carbon Steel (Zinc-Plated), Hastelloy C-276

Vent/Drain Valves & Plugs Material

  • 316 Stainless Steel , Hastelloy C-276

Head Gasket

  • Glass-filled PTFE Standard
  • Viton and Graphite Optional

Meter Body Bolting

  • 316 Stainless Steel, NACE A286 Stainless Steel Bolts and Super Duplex Optional
  • Carbon Steel (Zinc-Plated) Standard

Mounting Bracket

  • 2” Pipe, Carbon Steel (Zinc-Plated), 304 Stainless Steel or 316 Stainless Steel

Fill Fluid

  • Silicone 200, CTFE

Electronic Housing

  • Stainless Steel Housing Optional
  • Pure Polyester Powder-Coated Low Copper (< 0.4 %)-Aluminum. Meets NEMA 4X, IP66 & IP67

Process Connection

  • 1/2” NPT with Adapter
  • 1/4” NPT with Adapter

Wiring

  • Accepts Up to 16 AWG (1.5 mm Diameter)

Load Resistance

  • 1,440 ohms
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