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FS-550 Series Flow Switch
Brand: Gems Sensors, IncStandard FS-550 switches sense liquid flow in either direction to monitor flow/no-flow conditions. They are supplied in two paddle lengths.
The paddle is trimmed during installation to permit switch actuation at the desired flow rate. As flow increases in a pipe, the paddle of the switch pivots to move out of the liquid path, producing less than 3 psig of pressure drop regardless of pipe size.
Features- Pipe Line Size: 1-1/4˝ and Up
- Primary Construction Material: Stainless Steel or Brass
- Setting Type: Fixed
1 - 8 of 8 Part Numbers
29608
- Paddle Length - Long
- Housing Material - 316 Stainless Steel
- Connector - Standard
29609
- Paddle Length - Long
- Housing Material - Brass
- Connector - Standard
30640
- Paddle Length - Short
- Housing Material - 316 Stainless Steel
- Connector - Standard
30641
- Paddle Length - Short
- Housing Material - Brass
- Connector - Standard
56729
- Paddle Length - Long
- Housing Material - 316 Stainless Steel
- Connector - 3-Pin J-Box
56730
- Paddle Length - Long
- Housing Material - Brass
- Connector - 3-Pin J-Box
61189
- Paddle Length - Short
- Housing Material - 316 Stainless Steel
- Connector - 3-Pin J-Box
66914
- Paddle Length - Short
- Housing Material - Brass
- Connector - 3-Pin J-Box
1 - 8 of 8 Part Numbers
Specifications
Brand
Accuracy
- Set Point Accuracy: ± 25 %
Approvals & Certifications
- CE
- CSA: File No. LR30200
- FM: File No. 1H3A2.AX, 0A8A3AE
- RoHS
- UL: File No. E31926
- UR
Electrical Connectors
- 18 AWG, 24” (61 cm) Polymeric Lead Wires
Electrical Contacts
- Normally Closed or Normally Open
Electrical Rating
- 20 VA
Enclosure, Body Material
- 316 Stainless Steel
- Brass
Materials of Construction
- Paddle: 302 Stainless Steel
NPT Connection
- 1” NPT Male
- 1/2” NPT Male
Operating Pressure
- psig: 2,000 (kPa: 13,790, bar: 137.9) - Max.
Operating Temperature
- -34.4° to 148.9° C (-30° to 300° F)
Pipe Size
- 1.25” to 4” (31.75 to 101.6 mm)
Pressure Drop
- psig: 3 (kPa: 20, bar: 0.2) - Max.
Repeatability
- ± 5 %
Spring Material
- 316 Stainless Steel
Switch Type
- SPDT
Wetted Materials
- Ceramic
- Teflon
- Fire Suppression
- Marine, Cruise Ships, Yachts, Commercial
- Marine Vessels
- Off Highway Vehicles
- OHV - Fire Trucks
- OHV - Military Vehicles
- OHV - Mining Equipment
- OHV - Refueling Trucks
- OHV - Specialty Equipment
- Process Applications
- Specialty Vehicles