Thermal Flow Switches

FSW-420 & FSW-430 Series

^SGD640.00 FSW-433

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Automatic Scaling and Set-Point
No Moving Parts
Pushbutton Re-Scaling if Needed
Easy to Install
Normally Open Standard, Normally Closed Available

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Description

The FSW-420 & FSW-430 Series have been discontinued. Please see the FSW6000 & FSW7000 as a possible alternative or contact our Flow Engineering department.

The FSW-420/30 Series monitors your relative flow rate for applications where the actual flow rate is not important. The FSW-420/30 series is easy to install and use. Just put it into the pipe and it’s ready to go. The FSW-420/30 series sets your present flow-rate at 100% at power up. Relative flow rate is indicated by the 7 LED lights. When the flow rate drops to 50%, an alarm goes off. If you prefer, you can adjust the alarm point to fit your needs. A green output indicating LED is also included.

SPECIFICATIONS
Media: Liquids
Low Flow Set Point: Pre-set to 50% (field adjustable)
Operating Temperature: -20 to 80°C (-4 to 176°F)
Response Time: 25 seconds (typical)
Repeatability: 1%
Hysteresis: 10% of set-point value typical
Range:
    FSW-420 Series: 0 to 150 cm/sec
    FSW-431: 0 to 2.25 L/min
    FSW-432: 0 to 5.1 L/min
    FSW-433: 0 to 14.1 L/min
Operating Pressure: 30 Bar (450 psi)
Protection Class: NEMA 6 (IP67)
Housing: Anodized aluminum
Sensor Material: 303 stainless steel
Tube Housing (FSW-430 series): Polyacetal
Mounting (FSW-420 Series): ½ NPT
Connection Tube OD:
    FSW-431: 6 mm (0.24")
    FSW-432: 8 mm (0.31")
    FSW-433: 12 mm (0.47")
Electrical Connection: M12 male socket 4-pin, 2 m (7') cable with M12 connector and pigtail leads
Supply Voltage: 20 to 30 Vdc (short circuit protected)
Switching Current: <200 mA
Power Consumption: 6 W max
Initial Operation: 15 seconds
Output: PNP normally open (closed with flow), optional normally closed (open with flow)

(Specify Model Number)

Part Number/Desc.

Qty

Description

Normally Open Flow Switch

FSW-433

SGD640.00

Availability: 1 week

In-line flow switch 12 mm (0.47") tube

† All prices on this site are shown in Singapore Dollars.
Note: Comes complete with operator's manual and pre-wired 2m(6/5') cable.

Standard valves are Normally Open. For optional Normally Closed valves, add "-NC" to model number, no additional charge.

Ordering Example: (1) 70A-1 Audible alarm, SGD74.28 plus (1) PSU-93 Power supply, SGD126.27, SGD74.28 + 126.27 = SGD200.55