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Wika Flow switch, FSFD, For wet sprinkler systems, with adjustable time delay

Part Number : FSFD

Brand :
WIKA

The model FSFD was developed to detect the water flow in wet sprinkler systems once the sprinkler has been triggered. The flow switch is fitted with a pneumatic time delay mechanism that can be set from 0 ... 70 seconds via an adjustment dial to avoid false alarms during water surges.

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Description

The model FSFD was developed to detect the water flow in wet sprinkler systems once the sprinkler has been triggered. The flow switch is fitted with a pneumatic time delay mechanism 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/NEMA 4 ingress protection, is suitable for indoor and outdoor applications. For error-free installation, the direction of flow is indicated on the case and on the saddle. 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. Since the flow switch is designed for pipe sizes from 2 ... 8" 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 certifications.

Applications

Detection of the flow in wet sprinkler systems once the sprinkler has been triggered

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

Downloads

FSFD Data sheet FL 50.01.pdf

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FSFD Operating Instruction.pdf

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