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FS-RT データシート(PDF) 1 Page - Systemsensor advanced ideas.

部品番号 FS-RT
部品情報  Waterfl ow Detector
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メーカー  SYSTEMSENSOR [Systemsensor advanced ideas.]
ホームページ  http://www.systemsensor.com
Logo SYSTEMSENSOR - Systemsensor advanced ideas.

FS-RT データシート(HTML) 1 Page - Systemsensor advanced ideas.

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WFDNF Series
Waterflow Detector
The new WFDNF Series waterflow detectors from System
Sensor consists of a rugged, NEMA 4-rated enclosure that is
more damage resistant than previous metal designs. The waterflow
detector is designed for both indoor and outdoor use, with the widest
available temperature range, from 32°F to 150°F.
The WFDNFS with glue-in tee adapter fits 1”, 1¼”, 1½”, and 2”
CPVC tees manufactured by Tyco, Spears, NIBBCO, and IPEX.
The WFDNFT with a threaded tee adapter fits 1”, 1¼”, 1½”, and 2”
brass and copper threaded tees, in addition to 1” and 1½” CPVC
tees. Clearly marked plastic paddles are included to fit the different
installation configurations.
UL-listed models are equipped with tamper-resistant cover screws
to prevent unauthorized entry. Inside, two sets of SPDT (Form C)
synchronized switches are enclosed in a durable terminal block
with an layout designed to make wiring easy. The wire-ready COM
terminals are on a different elevation with a large barrier between
switches and easy-to-read, raised, textured lettering. An optional
cover tamper switch securely snaps into place, no tools required.
The WFDNFS and WFDNFT incorporate a mechanical time delay
feature that minimizes the risk of false alarms due to pressure
surges or air trapped in the fire sprinkler system. The large and
easy-to-turn timer dial makes setting the waterflow detector easy
with high-contrast, pad-printed markings. The dial offers three tabs
to help with turning: the largest tab is located on the dial position
for approximately 60 seconds and a notch in the dial indicates
approximately 30 seconds, making the detector easy to set in dimly
lit locations.
The WFDNF series is designed for accuracy and repeatability.
Detectors also offer improved performance during vibration in riser
applications where detectors are exposed to a large in-rush of water.
Agency Listings
System Sensor WFDNFS and WFDNFT waterflow detectors
are designed for primary signaling in systems that use
CPVC fittings.
Features
• WFDNFS has a glue-in adapter for connection to 1”, 1¼”, 1½”
and 2” CPVC tees
• WFDNFT has a NPT threaded adapter for connection to 1”, 1¼”,
1½” and 2” metal tees and 1” and 1½” CPVC tees
• Directional cover allows installers and inspectors to
easily see the direction of flow
• UL-listed models are NEMA 4 / IP 54 rated
• Cover is lightweight, unpainted and corrosion resistant
• Sealed retard mechanism immune to dust and other contaminants
• Less exposed metal reduces shock hazard, plastic cover acts
as insulator and is resistant to arcing
• Visual switch activation
• Audible switch activation (73 dBA)
• Field-replaceable timer/switch assembly
• Accommodates up to 12 AWG wire
• Switch synchronization activates both alarm panel
and local bell or horn strobe
• Tamper-resistant cover screws
• Wire-ready terminals
• Improved wiring with new terminal block layout
• Snap-in optional cover tamper switch
S739


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