WFD50EXP

Sprinkler SyStemS monitoring WFDEXP Explosion Proof Waterflow Detector Models Available WFD20EXP WFD25EXP WFD30-2EXP WFD35EXP WFD40EXP WFD50EXP WFD60EXP WFD80EXP WFD40EXP Replacement Parts A77-01-02 A3008-00 WFDRK Terminal Block Retard Mechanism Hardware Kit Product Overview New WFD30-2EXP models install in 2″ hole sizes Designed and approved to operate in hazardous locations NEMA 4 enclosure rating Sensitivity setting spring mechanism located outside of explosion environment Sealed retard mechanism Visual switch activation Synchronized activation circuit Field-replaceable terminal block and retard mechanism Only one conduit entrance required for hook-up System Sensor’s WFDEXP series is designed to handle extreme conditions. These units are ideal for installation in hazardous locations classified as follows: Class I, Groups B, C, D, Division 1 & 2 Class II, Groups E, F, G, Division 1 & 2 Class III, Division 1 & 2 Robust Construction. The WFDEXP series consists of a rugged, NEMA 4 rated cast aluminum housing. Designed for both indoor and outdoor use, the WFDEXP series operates across a wide temperature range, from 32ºF to 160ºF. Inside, two sets of SPDT (Form C) synchronized switches are enclosed in a rugged terminal block, to assure reliable performance. Reliable Performance. The WFDEXP series offers unique features that assure greater operational reliability. By housing the spring mechanism separately from the explosion environment, the sensitivity of the adjustment spring and the detector is protected at all times. Adding to the WFDEXP’s reliability is its sealed retard mechanism, which prevents contamination by dust and dirt when the cover is removed. Simplified Operation. Like all System Sensor waterflow detectors, the WFDEXP series is designed to ease installation. With its visible switch activation, the WFDEXP’s retard timing can be verified, even during noisy conditions. E200116 C169 44-00-E 3006195 Engineering Specifications Vane-type explosion proof waterflow detectors shall be installed on system piping on the drawing and/or as specified herein. Detectors shall be mounted in hazardous locations classified as: Class I, Div. 1 and 2, Groups B, C, D; or Class II, Div. 1 and 2, Groups E, F, G; or Class III, Div. 1 and 2. Detectors shall mount on any clear pipe span of the appropriate nominal size, either a vertical upflow or horizontal run, at least 6″ from any fittings which may change water direction, flow rate, or pipe diameter or no closer than 24″ 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″–8″ pipes. The detector shall respond to waterflow in the specified direction after a preset time delay which is field adjustable. The delay mechanism shall be a sealed mechanical pneumatic unit with visual indication of actuation. The actuation mechanism shall include a polyethylene 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 (one of which is a knockout type) for standard fittings of commonly used electrical conduit shall be provided on the detectors. A grounding provision is provided. 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 Hazardous Locations Classifications Class I, Div 1 and 2, Groups B, C, D Class II, Div 1 and 2, Groups E, F, G Class III, Div 1 and 2 Static Pressure Rating 450 psi (max) Triggered Threshold Bandwidth (Flow Rate) 4 to 10 GPM Maximum Surge 18 Feet per Second (FPS) Contact Ratings Two sets of SPDT (Form C) 10.0 A @ 125/250 VAC 2.5 A @ 24 VDC Compatible Pipe Steel water pipe, schedule 10 through 40 Weight WFD20EXP WFD25EXP WFD30-2EXP WFD40EXP WFD50EXP WFD60EXP WFD80EXP 10.6 lbs. 10.7 lbs. 10.9 lbs. 11.5 lbs. 12.1 lbs. 12.5 lbs. 13.5 lbs. Enclosure Rating NEMA 4 – suitable for indoor/outdoor use Overall Dimensions 6″H × 9″L × 6.5″W Ser vice Use Automatic Sprinkler: National Fire Alarm Code: Warranty 3 years U.S. Patent Nos. 5,213,205; 4,782,333; 3,845,259 NFPA-13 NFPA-72 Conduit Entrances Two openings for 1⁄2″ conduit Operating Temperature Range 32°F to 120°F (0°C to 49°C) Ordering Information Model Number WFD20EXP WFD25EXP WFD30-2EXP WFD35EXP WFD40EXP WFD50EXP WFD60EXP WFD80EXP Part Number A3008-0 A77-01-02 WFDRK Pipe Size 2″ 21⁄2″ 3″ 31⁄2″ 4″ 5″ 6″ 8″ Description Replacement Retard Mechanism for all sizes 2″–8″ Replacement Terminal Block Replacement Hardware Kit (contains tamper screws, wrench, and conduit plug) Hole Size 11⁄4″ 11⁄4″ 2″ 11⁄4″ 2″ 2″ 2″ 2″ System Sensor Sales and Service System Sensor Headquarters 3825 Ohio Avenue St. Charles, IL 60174 Ph: 800-SENSOR2 Fx: 630/377-6495 www.systemsensor.com System Sensor Canada Ph: 905.812.0767 Fx: 905.812.0771 System Sensor Europe Ph: 44.1403.276500 Fx: 44.1403.276501 System Sensor in China Ph: 86.29.8832.0119 Fx: 86.29.8832.5110 System Sensor in Singapore Ph: 65.273.2230 Fx: 65.273.2610 System Sensor – Far East Ph: 85.22.191.9003 Fx: 85.22.736.6580 System Sensor – Australia Ph: 613.54.281.142 Fx: 613.54.281.172 System Sensor – India Ph: 91.124.637.1770 x.2700 Fx: 91.124.637.3118 System Sensor – Russia Ph: 70.95.937.7982 Fx: 70.95.937.7983 © 2003 System Sensor. The company reserves the right to change product specifications without notice. A05-1030-004•10/03•#1125