Liquid Micro-Flow Switches

FSW530 Series

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^$ 300.00 FSW531

•	Economical
•	Extremely Low Flow
•	Pelton-Type Microturbine
•	Plastic or Metal Housing
•	High/Low Alarms
View related products - Variable Area Flowmeters, Rotameters & Switches

The FSW530 Series flow switches are capable of detecting extremely low liquid flow rates from 13 mL/minute up to 10 L/minute with a full scale switch accuracy of ±1.0% or better! A wide variety of fluids may be measured. Repeatable results are achieved using a patented pelton-type microturbine wheel. This proven design has been providing precision results since 1988 and has developed a well deserved reputation for continuous operational service for many years without failure. Because of the compact size and economical cost of these products, the FSW530 models are suitable for a wide variety of industrial, commercial, laboratory and OEM applications. Some sample applications include high/low alarms for hydrocarbon fluids, fuels, light oils, solvents, coolant, pesticides, mild acids, alkalis, and de-ionized water. Either plastic or metal construction may be selected.

SPECIFICATIONS
Accuracy: ±1% full scale
Repeatability: ±0.5% full scale
Recommended Liquids: Low viscosity (<10 cS), translucent or transparent chemically compatible with a minimal amount of entrained air
Fittings: Acetal, stainless steel (optional)
O-rings: FKM, EPDM (optional)
Power: 12 Vdc @ 75 mA (11.5 to 15 Vdc)
Maximum Pressure:
    Acetal: 6.9 bar (100 psig)
    Stainless Steel: 34.5 bar (500 psig)
Enclosure: NEMA 1 (IP10)
Recommended Filtration: 25 microns or less
Relay: FET switch 24 Vdc, 250 mA
Response Time: <1 second at 97% of final value
Switching Hysteresis: ±2.0% full scale
Dimensions: 60 x 55 x 90 mm (2.4 x 2.2 x 3.5")
Temperature:
    Operation: 5 to 55°C (41 to 131°F)
    Storage: 0 to 70°C (32 to 158°F)
Temperature Sensitivity: ±0.2% full scale or less per °C
Wetted Materials: Ryton or 316 SS, epoxy, glass, sapphire and FKM or EPDM (optional)

To Order (Specify Model Number)

Part Number	Availability	Price	Description	Qty.

Acetal Fitting Models

FSW531		$300.00	Acetal flow switch 20 to 100 mL/min, 3.18 mm (1/8") fitting	qty.

FSW532		$300.00	Acetal flow switch 30 to 200 mL/min, 6.35 mm (1/4") fitting	qty.

FSW533		$300.00	Acetal flow switch 60 to 500 mL/min, 6.35 mm (1/4") fitting	qty.

FSW534		$300.00	Acetal flow switch 120 to 1000 mL/min, 6.35 mm (1/4") fitting	qty.

FSW535		$300.00	Acetal flow switch 300 to 2000 mL/min, 6.35 mm (1/4") fitting	qty.

FSW536		$360.00	Acetal flow switch 0.6 to 5.0 L/min, 9.53 mm (3/8") fitting	qty.

FSW537		$385.00	Acetal flow switch 1.1 to 10 L/min, 9.53 mm (3/8") fitting	qty.


Stainless Steel Fitting Models

FSW531-S		$420.00	SS flow switch 20 to 100 mL/min, 3.18 mm (1/8") fitting	qty.

FSW532-S		$420.00	SS flow switch 30 to 200 mL/min, 6.35 mm (1/4") fitting	qty.

FSW533-S		$420.00	SS flow switch 60 to 500 mL/min, 6.35 mm (1/4") fitting	qty.

FSW534-S	5 Weeks	$420.00	SS flow switch 120 to 1000 mL/min, 6.35 mm (1/4") fitting	qty.

FSW535-S		$420.00	SS flow switch 300 to 2000 mL/min, 6.35 mm (1/4") fitting	qty.

FSW536-S	5 Weeks	$480.00	SS flow switch 0.6 to 5.0 L/min, 9.53 mm (3/8") fitting	qty.

FSW537-S		$525.00	SS flow switch 1.1 to 10 L/min, 9.53 mm (3/8") fitting	qty.

† All dollar amounts on this site are shown in US currency.

Note: Comes complete with operator’s manual.

To order optional EPDM O-rings, add suffix "-EPDM" to model number, add $50 to the price.

Ordering Example: (1) FSW531 Acetal airflow switch 20 to 100 mL/min, $300.00, plus (1) PSS-12 12 Vdc power supply, $204.00, $300.00 + 204.00 = $504.00

Keywords:Liquid Micro-Flow Switches, Flow Switches