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Thermal Dispersion Flow Switches for Liquids

FST-200 Series

Thermal Dispersion Flow Switches | FST-200 Series

Thermal Dispersion Flow Switches

See All Models Below

1 year warranty CE RoHS
  • High Reliability — No Moving Parts
  • Very Low Flow Detection–Down to 0.04 FPS Liquids
  • Use in 1/8 through 12" Pipe or Tubing
  • SPST Relay Standard
  • Excellent for Pump and Valve Monitoring of Critical Flows
Variable Area Flow Meters, Rotameters & Switches - View related products

Description

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")
Place Order(Specify Model Number)
Part Number/ Desc.
Qty
RoHS
Description
FST-211-SPST Star
CAD255.00
Availability: In Stock
RoHS compliant
Thermal dispersion flow switch, PP/PVDF, 3.0 x 3/4 NPT, 3/4 to 1-1/2" pipe
FST-211-SPST-25 FT Star
CAD294.00
Availability: 9 weeks
RoHS compliant
Thermal dispersion flow switch, PP/PVDF, 3.0 x 3/4 NPT, 3/4 to 1-1/2" pipe, 7.62 M (25')
FST-211-SPST-50 Star
CAD333.00
Availability: 9 weeks
RoHS compliant
Thermal dispersion flow switch, PP/PVDF, 3.0 x 3/4 NPT, 3/4 to 1-1/2" pipe, 15.24 M (50')
FST-212-SPST Star
CAD415.00
Availability: 1 week
RoHS compliant
Thermal dispersion flow switch, PVDF, 3.0 x 3/4 NPT, 3/4 to 1-1/2" pipe
FST-212-SPST-25 Star
CAD510.00
Availability: 9 weeks
RoHS compliant
Thermal dispersion flow switch, PVDF, 3.0 x 3/4 NPT, 3/4 to 1-1/2" pipe, 7.62 m (25')
FST-212-SPST-50 Star
CAD765.00
Availability: 9 weeks
RoHS compliant
Thermal dispersion flow switch, PVDF, 3.0 x 3/4 NPT, 3/4 to 1-1/2" pipe, 15.24 m (50')
FST-221-SPST Star
CAD269.00
Availability: In Stock
RoHS compliant
Thermal dispersion flow switch, PP/PVDF, 4.5 x 3/4 NPT, 2 to 12" pipe
FST-221-SPST-25 Star
CAD306.00
Availability: 9 weeks
RoHS compliant
Thermal dispersion flow switch, PP/PVDF, 4.5 x 3/4 NPT, 2 to 12" pipe, 7.62 m (25')
FST-221-SPST-50 Star
CAD345.00
Availability: 9 weeks
RoHS compliant
Thermal dispersion flow switch, PP/PVDF, 4.5 x 3/4 NPT, 2 to 12" pipe, 15.24 m (50')
FST-222-SPST Star
CAD430.00
Availability: 9 weeks
RoHS compliant
Thermal dispersion flow switch, PVDF, 4.5 x 3/4 NPT, 2 to 12" pipe
FST-222-SPST-25 Star
CAD685.00
Availability: 1 week
RoHS compliant
Thermal dispersion flow switch, PVDF, 4.5 x 3/4 NPT, 2 to 12" pipe, 7.62 m (25')
FST-222-SPST-50 Star
CAD940.00
Availability: 9 weeks
RoHS compliant
Thermal dispersion flow switch, PVDF, 4.5 x 3/4 NPT, 2 to 12" pipe, 15.24 m (50')
Flow Switch Fittings for 3" Sensors
FT-51 Star
CAD71.00
Availability: 9 weeks
RoHS compliant
Flow switch fitting for use with FST-211 and FST-212 only. 1/8 to 1/4" tube ID, 0.05-1.53 GPM Range, PP Material
FT-52 Star
CAD121.00
Availability: 9 weeks
RoHS compliant
Flow switch fitting for use with FST-211 and FST-212 only. 1/8 to 1/4" tube ID, 0.05-1.53 GPM range, PVDF (Kynar) Material
All dollar amounts on this site are shown in Canadian currency. 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.