Thermal Flow Switches for Liquids

FST-200 Series

FST200 Series Thermal Dispersion Flow Switches

^£197.51 FST-211-SPST

PLACE ORDER

High Reliability: No Moving Parts
Very Low Flow Detection: Down to 0.012 m/s Liquids
Use in Pipe sizes from 3/4" to 12"
SPST Relay. 60 VA, 1 A max.
Excellent for Pump and Valve Monitoring of Critical Flows

Variable Area Flowmeters & Switches - View related products

Description

OMEGA™ FST-200 Series flow switches use thermal dispersion technology to create a reliable and economical method of low or no-flow detection of relatively clean, non-coating liquids. Examples include water and acetic acid.

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. These flow sensors are best applied in applications with relatively constant temperature. If the application experiences conditions of pulsing flow then please consider use of the FT-51 or FT-52 fittings - see "To Order" table below.

OMEGA’s LVCN-131 and LVCN-141 of controllers can easily be interfaced to perform a variety of control functions.

Specifications
Set point range: 0.012 to 0.91 m/s
Factory set point: 0.06 m/s
Repeatability: ± 0.5% of setpoint at constant temperature
Response time: 1-10 seconds after initial 30 sec warm up
Set point adjust: Potentiometer
Viscosity range: 1-200 centipoise
LED Indication: Flow status
Supply voltage: 12-36 Vdc, 70 mA max.
Contact type: SPST relay. 60 V ac/dc 1 A max
Contact output mode: selectable, NO or NC
Fluid Temperature: 0 to 60°C
Max Fluid Pressure (PP or PVDF): 10 bar @ 25°C
derated @0.113 bar per °C above 25°C
Wetted Materials: PP and PVDF
Cable Specifications: 3 m, 4-core screened
Max Cable Length: 300 m
Dimensions: 76 or 114 x 27 mm dia.

Place Order(Specify Model Number)

Part Number/ Desc.

Qty

Description

FST-211-SPST

£197.51

Availability: 2 weeks

Liquid flow switch, PP/PVDF, 76 mm long. 3/4 NPT, 3/4 to 1-1/2" pipe. With 3 m cable

FST-211-SPST-25 FT

£238.96

Availability: 10 weeks

Liquid flow switch, PP/PVDF, 76 mm long. 3/4 NPT, 3/4 to 1-1/2" pipe. With 7.5 m cable

FST-211-SPST-50

£274.22

Availability: 10 weeks

Liquid flow switch, PP/PVDF, 76 mm long. 3/4 NPT, 3/4 to 1-1/2" pipe. With 15 m cable

FST-212-SPST

£342.77

Availability: 2 weeks

Liquid flow switch, PVDF, 76 mm long 3/4 NPT, 3/4 to 1-1/2" pipe. With 3 m cable

FST-212-SPST-25

£416.21

Availability: 10 weeks

Liquid flow switch, PVDF, 76 mm long 3/4 NPT, 3/4 to 1-1/2" pipe. With 7.5 m cable

FST-212-SPST-50

£626.77

Availability: 10 weeks

Liquid flow switch, PVDF, 76 mm long 3/4 NPT, 3/4 to 1-1/2" pipe. With 15 m cable

FST-221-SPST

£206.77

Availability: 5 weeks

Liquid flow switch, PP/PVDF, 114 mm long 3/4 NPT, 2 to 12" pipe. With 3 m cable

FST-221-SPST-25

£236.44

Availability: 8 weeks

Liquid flow switch, PP/PVDF, 114 mm long 3/4 NPT, 2 to 12" pipe. With 7.5 m cable

FST-221-SPST-50

£284.01

Availability: 10 weeks

Liquid flow switch, PP/PVDF, 114 mm long 3/4 NPT, 2 to 12" pipe. With 15 m cable

FST-222-SPST

£333.81

Availability: 10 weeks

Liquid flow switch, PVDF, 114 mm long 3/4 NPT, 2 to 12" pipe. With 3 m cable

FST-222-SPST-25

£558.22

Availability: 10 weeks

Liquid flow switch, PVDF, 114 mm long 3/4 NPT, 2 to 12" pipe. With 7.5 m cable

FST-222-SPST-50

£763.87

Availability: 10 weeks

Liquid flow switch, PVDF, 114 mm long 3/4 NPT, 2 to 12" pipe. With 15 m cable

Flow Switch Fittings for Pulsing Flow Applications ( Fit 76 mm long sensors only)

† All amounts shown in EUR, GBP, or USD
Note: Comes complete with operator’s manual.
Ordering Example: (1) FST-211-SPST Flow switch, 76 mm long, 3/4, £197.51