Thermal Flow Switches
Volume discounts available
Volume Discount Schedule
| Quantity | Price each |
|---|---|
| 1-4 | $322.00 |
| 5-9 | $305.90 |
| 10-24 | $299.46 |
| 25-49 | $286.58 |
| 50-99 | $280.14 |
| 100+ | $273.70 |
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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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Connection Size
Body Material
Switch Type
Compatible Media
Wire Length
Features
Product Specs
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)
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