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FST320-Series

Thermal Dispersion Flow Switches for Use With Gases

Models In Stock
  • Measure Mass Flow of Gases
  • High Reliability, No Moving Parts
  • Effectively Monitor Critical Gas Flows
  • May Be Used in Small Piping or Large Ducts
FST320-Series
From $ 309.43
Models In Stock
Thermal Dispersion Flow Switches for Use With Gases FST320-Series FST320-Series
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Product Overview
  • Accuracy ± 5 %
  • Accuracy Note ±5% of setpoint at constant temperature and flowrate
  • Additional Features 1  
  • Adjustments Potentiometer
  • Approvals CE
  • Approvals Note CE compliance: EN 61326 EMC EN 61010‐1 safety
  • Cable Length 10 ft
  • Cable Length Note Max: 100 ft
  • Diameter 1.05 in
  • Electrical Connection 3/4 in NPT male Conduit with Screw Terminal block
  • Linear Flow Rate, Max 90 ft/s
  • Linear Flow Rate, Min 1 ft/s
  • Media Compatibility Gases
  • Operating Pressure, Max 150 psi
  • Operating Pressure Note Maximum Fluid Pressure: PP or PVDF: 150 psi @ 25°C (77°F) derated @ 1.667 psi per °C above 25°C (77°F)
  • Operating Temperature, Max 60 °C
  • Operating Temperature, Min -40 °C
  • Power Consumption 70 mA
  • Process Connection Size 3/4 in
  • Process Connection Type NPT Male
  • Process Temperature, Max 60 °C
  • Process Temperature, Min 0 °C
  • Response Time 10 sec
  • Response Time Note 10 sec after initial 30 sec warm up
  • Supply Power Note 12 to 36 Vdc @ 70 mA
  • Supply Voltage 12 to 36 Vdc
  • Switch Rating 1 A
  • Switch Type SPST NO/NC, Selectable
  • Thermal Effects 0.5%/°C
  • Wire Gauge 22 AWG

OMEGA’s FST-320 Series thermal dispersion flow switches, especially designed for use with gases, sense changes in the heat transfer characteristics of the gases. Flow velocities from 1 to 90 fps are effectively monitored. The flow switch incorporates a standard SPST Relay switch output for control flexibility. The OMEGA® LVCN-131 and LVCN-141 controllers can easily be interfaced to perform a variety of control functions. The FST-320 family of sensors can be easily installed in line sizes ranging from 3/4 to 12'.

SPECIFICATIONS
Range: 1 to 90 fps
Accuracy: ±5% of setpoint at constant temperature and flowrate
Response time: 10 seconds after initial 30 sec warm up
Setpoint Drift with Fluid Temperature: 0.5% per °C
Voltage Input: 12-36 Vdc @ 60 mA
Contact Output: 1 A SPST Relay, selectable NO or NC states
Fluid Temperature: 0 to 60°C (32 to 140°F)
Max Fluid Pressure: 150 psi @ 25°C (77°F) derated @ 1.667 psi per °C above 25°C (77°F)
Wetted Materials: PP with PVDF
Cable Length: 3 m (10 ft)
Max Cable Length: 305 m (1000 ft)
Dimensions:76.2 or 114.3 x 26.7 mm dia.(3.0 or 4.5 x 1.05')

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