WFD60NA [SYSTEMSENSOR]
Waterflow Detector;
| 型号： | WFD60NA |
| 厂家： | 
SYSTEMSENSOR ADVANCED IDEAS. |
| 描述： | Waterflow Detector |
| 文件： | 总2页 (文件大小：663K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
WFDN Series
Waterflow Detector
The System Sensor WFDN series is compatible with
schedule 7 through 40 steel pipe, for sizes 2 in. through
4 in. and compatible with schedule 10 through 40 steel
pipe, sizes 5 in. through 8 in., and can be mounted in a
vertical or horizontal position.
Features
The new WFDN 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. They are also approved for
installation on the widest range of pipe schedules, sizes 2 in. through
4 in. are approved for installation on pipe schedules 7 through 40.
• New directional cover allows installers and inspectors to
easily see the direction of flow
• UL-listed models are NEMA 4 rated
• New cover provides a better seal, is lighter weight, not painted
and corrosion resistant
• Sealed retard mechanism immune to dust and other contaminants
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
new layout designed to make wiring easy with wire ready terminals,
COM terminals are on a different elevation, large barrier between
switches and easy to read raised textured lettering all make wiring
easy. An optional cover tamper switch is available, securely snaps
into place, no tools required.
• 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
The WFDN series incorporates a mechanical time delay feature,
which minimizes the risk of false alarm due to pressure surges or air
trapped in the fire sprinkler system. The larger 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,
with one larger tab located on the dial position for approximately 60
seconds, a notch is also indicated on the dial to locate approximately
30 seconds making setting the detector in dimmly lit locations easy.
• Tamper-resistant cover screws
• Improved water sealing
• Reduced product weight
• Wire-ready terminals
• Improved wiring with new terminal block layout
• Snap-in optional cover tamper switch
• Improved timer repeatability and accuracy
The WFDN series is designed for accuracy and repeatability. The
detector also offers improved performance during vibration in riser
applications where detectors are exposed to a large in rush of water.
Agency Listings
S739
7770-1653:0231
3051266
Waterflow Detector Specifications
Engineering Specifications
Vane-type waterflow detectors shall be installed on system piping as designated on the drawing and/or as specified herein. Detectors shall
mount on any clear pipe span of the appropriate nominal size, either a vertical upflow or horizontal run, at least 6 in. from any fittings that may
change water direction, flow rate, or pipe diameter or no closer than 24 in. from a valve or drain. Detectors shall have a sensitivity in the range of
4 to 10 gallons per minute and a static pressure rating of 450 psi for 2 in. – 8 in. pipes. The detector shall respond to waterflow in the specified
direction after a preset time delay that is field adjustable. The delay mechanism shall be a sealed mechanical pneumatic unit with visual and
audible indication of actuation. The actuation mechanism shall include a ethylene vinyl acetate vane inserted through a hole in the pipe and
connected by a mechanical linkage to the delay mechanism. Outputs shall consist of dual SPDT switches (Form C contacts). Two conduit
entrances for standard fittings of commonly used electrical conduit shall be provided on the detectors. A grounding provision is provided. Unless
noted, enclosures shall be NEMA 4 listed by Underwriters Laboratories Inc. All detectors shall be listed by Underwriters Laboratories Inc. for
indoor or outdoor use.
Standard Specifications
Static Pressure Rating 450 PSI
Operating Temperature Range
Enclosure Rating*
32°F to 150°F (0°C to 66°C)
Maximum Surge
18 Feet Per Second (FPS)
NEMA 4 – suitable for indoor/outdoor use
Triggering Threshold
Bandwidth (Flow Rate)
4–10 GPM
Cover Tamper Switch
Standard with ULC models, optional for
UL models, part no. CTS
Conduit Entrances
Two openings for ½ in. conduit.
NEMA 4 rated plugs
Service Use
Warranty
Automatic Sprinkler: NFPA-13
One or Two Family Dwelling: NFPA 13D
Residential Occupancies up to 4 Stories:
NFPA 13R National Fire Alarm Code: NFPA-72
Contact Ratings
Compatible Pipe
Two sets of SPDT (Form C)
10.0 A, ½ HP @ 125/250 VAC
2.5 A @ 6/12/24 VDC
3 Years
Steel water pipe, schedule
7 through 40*
WFDN Field Wiring Diagram
Overall Dimensions, Installed
8.9 CM
(3.5")
6.6 CM
(2.6")
PIPE DIAMETER
PLUS 12.7 CM
(5")
U-BOLT
NUT
PIPE
SADDLE
PIPE
PIPE
VANE
U-BOLT
OVERALL WIDTH = PIPE DIAMETER + 6.4 CM (2.5")
Ordering Information
UL Model
WFD20N
WFD25N
WFD30N
WFD40N
WFD50N
WFD60N
WFD80N
Accessories
FS-RT
ULC Model
WFD20NA
WFD25NA
WFD30NA
WFD40NA
WFD50NA
WFD60NA
WFD80NA
Pipe Size
Hole Size
1¼ in.
1¼ in.
2 in.
Shipping Weights
2.6 lbs.
2 in.
2½ in.
3 in.
4 in.
5 in.
6 in.
8 in.
2.6 lbs.
3.1 lbs.
2 in.
4.0 lbs.
2 in.
4.9 lbs.
2 in.
5.6 lbs.
2 in.
7.3 lbs.
Delay mechanism and switch assembly
Tamper-proof switch kit
CTS
WFDW
Tamper-proof wrench for cover
* 2 in. - 4 in. rated for use with Schedule 7 through 40 pipe, 6 in. - 8 in. rated for use with Schedule 10 through 40 pipe.
3825 Ohio Avenue • St. Charles, IL 60174
Phone: 800-SENSOR2 • Fax: 630-377-6495
www.systemsensor.com
©2016 System Sensor.
Product specifications subject to change without notice. Visit systemsensor.com
for current product information, including the latest version of this data sheet.
WFDS87903 • 11/16
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