OMEGA

FST-321-SPST Thermal Dispersion Flow Switches for use w/Gases

Thermal Dispersion Flow Switches for Use With Gases

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FST 321 SPST Thermal Dispersion Flow Switches for use w Gases 13742

 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'.

 
• Measure Mass Flow of Gases
• High Reliability, No Moving Parts
• Effectively Monitor Critical Gas Flows
• May Be Used in Small Piping or Large Ducts
Range1 to 90 fps
Accuracy±5% of setpoint at constant temperature and flowrate
Response Time10 seconds after initial 30 sec warm up
Setpoint Drift with Fluid Temperature0.5% per °C
Voltage Input12-36 Vdc @ 60 mA
Contact Output1 A SPST Relay, selectable NO or NC states
Fluid Temperature0 to 60°C (32 to 140°F)
Max Fluid Pressure150 psi @ 25°C (77°F) derated @ 1.667 psi per °C above 25°C (77°F)
Wetted MaterialsPP with PVDF
Cable Length3 m (10 ft)
Max Cable Length305 m (1000 ft)
Dimensions76.2 or 114.3 x 26.7 mm dia.(3.0 or 4.5 x 1.05')

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