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WIKA · Flow measurement · Family FSFD

Flow switch

For wet sprinkler systems, with adjustable time delay
Range
15…38 LPM
Output
2 x SPDT (form C)
Protection
IP56
UL 346FM 1042UL346FM1042
Price
On request
Depends on configuration
Request a quote
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Description

wet sprinkler systems once the sprinkler has been triggered. -nism that can be set from 0 ... 70 seconds via an adjustment dial to avoid false alarms during water surges.

The tamper-proof screws on the cover prevent unauthorised access to the switch point setting. The robust design, with IP56/NEMA4 ingress protection, is suitable for indoor and outdoor applications. For error-free installation, the direction

The model FSFD has two cable duct openings for two sets of SPDT switches (form C) in a fused terminal block, which provides a direct electrical connection to control panels and local audible warnings.

Flow switch, model FSFD

in various pipe schedules, it provides a complete solution for construction projects.

The model FSFD has been designed for improved sensitivity and repeatability of the switch point and has UL and FM certi-

Special features

  • Adjustable time delay mechanism to avoid false alarms during water surges
  • Tamper-proof cover prevents unauthorised access to the switch point setting
  • IP56/NEMA 4 ingress protection enables the instrument to be used indoors and outdoors
  • Two sets of microswitches activate the control panel and the local audible warnings
  • Two cable duct openings enable easy connections to terminal blocks
Identification
ModelFSFD
SubcategoryFlow switch
Measuring range
Flow ranges15…38 LPM
Pipe diameter200 mm
Process conditions
Process connection
Horizontal mountingVertical mounting2 x 1/2" conduit
Process temperature+0…+68 °C
Max process pressure18.5 bar
Electrical characteristics
Output signal2 x SPDT (form C)
Materials
Wetted parts materialEPDM, Aluminium die-casting (EN AC-46000), Aluminium die-casting (per EN AC-46000)
Operating environment
Ambient temperature+0…+68 °C
IP ratingIP56
Weight3.5 kg
Certifications and approvals
Certifications
UL 346FM 1042
Additional details
Datasheet languagesEN
Tables from datasheet
Specifications
Approvals■ UL 346 ■ FM 1042
CaseAluminium die-casting (per EN AC-46000)
SealingEPDM
Ingress protectionIP56/NEMA 4, suitable for indoor and outdoor applications
Flow rate/sensitivity4 ... 10 GPM[15 ... 38 LPM]
Operating pressure268 psi [18.5 bar] 1)
Max. water surge18 FPS [5.5 m/s)]
Operating temperature0 ... 68 °C [32 ... 154 °F]
Switching function2 x SPDT (single pole double throw), form C
Electrical rating■ 10 A, AC 125/250V ■ 2 A, DC 30V res.
Electrical connectionTwo inputs for 1/2" conduit
Mounting■ Horizontal mounting ■ Vertical mounting The arrows on the case and the saddle determine the flow direction.
Regulations
Installation of sprinkler systemsNFPA-13
Installation of sprinkler systems in one- and two-family dwellings and manufactured homesNFPA-13D
Installation of sprinkler systems in low-rise residential occupanciesNFPA-13R
National fire alarm and signaling codeNFPA-72
WeightApprox. 2 ... 3.5 kg [4.4 ... 7.7 lb], depending on pipe size
ModelNominal pipe sizeOuter diameterWall thickness
Light-weight wallSchedule 10Schedule 40
inchmminchmminchmminchmminchmm
FSFD 22DN 502.3760.30.071.650.112.770.153.91
FSFD 2.52.5DN 652.87730.082.130.123.05--
FSFD 33DN 803.588.90.082.110.123.050.225.49
FSFD 3.53.5-4101.6--0.123.050.235.74
FSFD 44DN 1004.5114.30.082.130.123.050.246.02
FSFD 55-5.56141.3--0.133.40.266.55
FSFD 66DN 1506.63168.30.122.920.133.40.287.11
FSFD 88DN 2008.63219.1--0.153.760.328.18
LogoDescriptionRegion
UL Safety (e.g. electr. safety, overpressure, ...)USA
FM Hazardous areasUSA
Nominal pipe sizeModelOrder number
inchmm
2DN 50FSFD 283792488
2.5DN 65FSFD 2.583792489
3DN 80FSFD 383792490
3.5-FSFD 3.583792491
4DN 100FSFD 483792492
5-FSFD 583792493
6DN 150FSFD 683792494
8DN 200FSFD 883792495