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System Sensor WFDN Waterflow Detector, 450 PSI, (2) SPDT, 2 IN
WFDN Series water flow detectors are 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 through 8 IN, and can be mounted in a vertical or horizontal position. WFDN Series water flow detectors consist of a rugged, NEMA 4 rated enclosure that is more damage resistant than previous metal designs. The water flow detector is designed for both indoor and outdoor use, with the widest available temperature range, from 32 to 150 DEG 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.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. WFDN detectors incorporate 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 water flow 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 dimly lit locations easy. 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.
Item Name | : | Waterflow Detector |
Series/Model | : | Series WFDN |
Operating Pressure | : | 450 PSI |
Contact Configuration | : | (2) SPDT |
Contact Rating | : | 10 A, 1/2 HP At 125/250 VAC, 2.5 A At 6/12/24 VDC |
Conduit Entrance | : | 1/2 IN |
Mounting | : | Vertical Or Horizontal |
Temperature Rating | : | 32 - 150 DEG F |
Industry Standards | : | C/US UL S739 Listed, FM 3051266 Approved, 7770-1653:0231 Listing |
Enclosure | : | NEMA 4 |
Width | : | 3-1/2 IN |
Height | : | 5 IN |
Other Physical Dimension | : | Pipe Size: 2 IN | Hole Size: 1-1/4 IN |
Additional Specifications | : | Triggering Threshold: 4 - 10 GPM | Maximum Surge: 18 FPS |