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Thermal Dispersion Flow Switches for Liquids

FST-200 Series

FST-200 Series:Thermal Dispersion Flow Switches for Liquids

Thermal Dispersion Flow Switches

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1 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
View related products - Variable Area Flowmeters, Rotameters & Switches

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)

What Other People Bought: When you see this icon, click on it to expand a list of products that other people have bought when they purchased this model.

Part Number/Desc.
Availability
Price
Description
Qty.
RoHS
Click to expand/minimize a list of what others bought with theFST-211-SPST
FST-211-SPST
Star
Availability: In Stock 
$190.00   
Thermal dispersion flow switch, PP/PVDF, 3.0 x 3/4 NPT, 3/4 to 1-1/2" pipe
RoHS compliant
  
FST-211-SPST-25 FT
Star
Availability: In Stock 
$210.00   
Thermal dispersion flow switch, PP/PVDF, 3.0 x 3/4 NPT, 3/4 to 1-1/2" pipe, 7.62 M (25')
RoHS compliant
  
FST-211-SPST-50
Star
Availability: 8 Weeks 
$230.00   
Thermal dispersion flow switch, PP/PVDF, 3.0 x 3/4 NPT, 3/4 to 1-1/2" pipe, 15.24 M (50')
RoHS compliant
  
FST-212-SPST
Star
Availability: In Stock 
$300.00   
Thermal dispersion flow switch, PVDF, 3.0 x 3/4 NPT, 3/4 to 1-1/2" pipe
RoHS compliant
  
FST-212-SPST-25
Star
Availability: 8 Weeks 
$375.00   
Thermal dispersion flow switch, PVDF, 3.0 x 3/4 NPT, 3/4 to 1-1/2" pipe, 7.62 m (25')
RoHS compliant
  
FST-212-SPST-50
Star
Availability: 8 Weeks 
$450.00   
Thermal dispersion flow switch, PVDF, 3.0 x 3/4 NPT, 3/4 to 1-1/2" pipe, 15.24 m (50')
RoHS compliant
  
FST-221-SPST
Star
Availability: 8 Weeks 
$197.00   
Thermal dispersion flow switch, PP/PVDF, 4.5 x 3/4 NPT, 2 to 12" pipe
RoHS compliant
  
FST-221-SPST-25
Star
Availability: 8 Weeks 
$220.00   
Thermal dispersion flow switch, PP/PVDF, 4.5 x 3/4 NPT, 2 to 12" pipe, 7.62 m (25')
RoHS compliant
  
FST-221-SPST-50
Star
Availability: In Stock 
$240.00   
Thermal dispersion flow switch, PP/PVDF, 4.5 x 3/4 NPT, 2 to 12" pipe, 15.24 m (50')
RoHS compliant
  
FST-222-SPST
Star
Availability: In Stock 
$310.00   
Thermal dispersion flow switch, PVDF, 4.5 x 3/4 NPT, 2 to 12" pipe
RoHS compliant
  
FST-222-SPST-25
Star
Availability: In Stock 
$385.00   
Thermal dispersion flow switch, PVDF, 4.5 x 3/4 NPT, 2 to 12" pipe, 7.62 m (25')
RoHS compliant
  
FST-222-SPST-50
Star
Availability: 8 Weeks 
$460.00   
Thermal dispersion flow switch, PVDF, 4.5 x 3/4 NPT, 2 to 12" pipe, 15.24 m (50')
RoHS compliant
Flow Switch Fittings for 3" Sensors
Click to expand/minimize a list of what others bought with theFT-51
FT-51
Star
Availability: In Stock 
$51.00   
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
RoHS compliant
  
FT-52
Star
Availability: 8 Weeks 
$91.00   
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
RoHS compliant
All dollar amounts on this site are shown in US 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.
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