OMEGA® FST-200 Series flow switches use thermal dispersion technology to create a very
accurate and economical method of sensing flow. Monitor fluids from 0.4 to 1.2 specific gravity, 1 to 300 cp,
and pulsating flow from 10 to 100 pulses per minute. The sensors incorporate two temperature probes, one of
which is heated. The flow of liquid reduces the temperature of the heated probe, decreasing the temperature
differential with the non-heated probe. OMEGA’s LVCN-131 and
LVCN-141 of controllers can easily be interfaced to perform a variety of control functions.
SPECIFICATIONS Range: 0.04 to 3 fps (liquids) 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@70 mA Contact Output Mode: selectable, NO or NC states Fluid Temperature: 0 to 60°C (32 to 140°F) Max Fluid Pressure (PP or PVDF): 150 psi @ 25°C (77°F) derated @1.667 psi per °C above 25°C (77°F) Wetted Materials: PP and PVDF Cable Specifications: 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")
† All amounts shown in USD Note: Comes complete with operator’s manual.
To order with 7.62 m (25') cable, add suffix "-25" to model number, add $20 to price for PP/PVDF, or $75 for PVDF.
To order with 15.24 m (50') cable, add suffix "-50" to model number, add $40 to price for PP/PVDF or $150 for PVDF.
Sizes above 1/2" fit into 3/4 NPT fitting adaptor.