Thermal Dispersion Flow Switches for Liquids

FST-200 Series

Thermal Dispersion Flow Switches

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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 & 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")

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Part Number/ Desc.

Qty

Description

FST-211-SPST

AUD444.72

Availability: 1 week

Thermal dispersion flow switch, PP/PVDF, 3.0 x 3/4 NPT, 3/4 to 1-1/2" pipe

FST-211-SPST-25 FT

AUD510.00

Availability: 9 weeks

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

AUD590.00

Availability: 9 weeks

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

AUD735.00

Availability: 1 week

Thermal dispersion flow switch, PVDF, 3.0 x 3/4 NPT, 3/4 to 1-1/2" pipe

FST-212-SPST-25

AUD890.00

Availability: 9 weeks

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

AUD1,345.00

Availability: 9 weeks

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

AUD466.96

Availability: 1 week

Thermal dispersion flow switch, PP/PVDF, 4.5 x 3/4 NPT, 2 to 12" pipe

FST-221-SPST-25

AUD535.00

Availability: 9 weeks

Thermal dispersion flow switch, PP/PVDF, 4.5 x 3/4 NPT, 2 to 12" pipe, 7.62 m (25')

FST-221-SPST-50

AUD610.00

Availability: 9 weeks

Thermal dispersion flow switch, PP/PVDF, 4.5 x 3/4 NPT, 2 to 12" pipe, 15.24 m (50')

FST-222-SPST

AUD755.00

Availability: 9 weeks

Thermal dispersion flow switch, PVDF, 4.5 x 3/4 NPT, 2 to 12" pipe

FST-222-SPST-25

AUD1,195.00

Availability: 9 weeks

Thermal dispersion flow switch, PVDF, 4.5 x 3/4 NPT, 2 to 12" pipe, 7.62 m (25')

FST-222-SPST-50

AUD1,640.00

Availability: 9 weeks

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

AUD140.64

Availability: 9 weeks

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

AUD219.00

Availability: 9 weeks

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 amounts shown in AUD
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.