LFD30-2 SYSTEMSENSOR | Alldatasheet
Document overview
- Manufacturer or author: Provided By ALLDATASHEET.COM(FREE DATASHEET DOWNLOAD SITE)
- PDF pages: 2
Technical content
System Sensor’s Accuflow™ Low Flow Rate detectors are a new line of solid state waterflow detectors designed for use in wet pipe water mist systems where low flow detection is required. Robust Construction. Accuflow low flow detectors consist of a rugged enclosure for indoor and outdoor use. Like all System Sensor waterflow detectors, low flow models operate across a wide temperature range, from 32ºF to 120ºF (0°C to 49°C). Reliable Performance. Accuflow low flow detectors are intended for applications where flow detection of 3 GPM or greater is required. By incorporating a solid state retard, proper sensitivity, timing accuracy and switch resetting is assured. False Alarm Immunity. The solid state circuitry of Accuflow low flow detectors provides greater timing accuracy over traditional mechanical retard designs. This accuracy minimizes the risk of false alarms created by pressure surges or air trapped within the sprinkler system. Simplified Operation. Accuflow low flow detectors are designed to simplify installa- tion. Wired like traditional waterflow detectors, these models do not require the installer to run an additional third wire. Two conduit openings permit easy attach- ment to the local alarm system. For use in wet pipe water mist systems Compatible with 2 to 4 inch stainless steel and brass pipe Solid state retard assures precise timing accuracy Dipswitch selections simplify retard settings Non-polarized, two-wire design allows connection to a local bell and conventional or addressable systems NEMA 4 rated Synchronized switches activate both the alarm panel and local bell simultaneously Product Overview Accuflow™ Series Low Flow Rate Waterflow Detectors Models Available LFD20 LFD25-73MM LFD25-76MM LFD30-2 LFD40 Replacement Parts WFDW Cover wrench 546-9000 Cover tamper switch kit WFDN4 Gasket kit LFD30-2 LFD30-2 (cover removed)
Replacement Part Number Description 546-9000 Cover tamper switch kit WFDW Tamper proof wrench for cover WFDN4 Gasket kit Low flow rate vane-type waterflow detector with solid state retard shall be an Accuflow model number ____________________ manufactured by System Sensor, and shall be installed on system piping as designated on the drawing and/or as specified herein. Detectors shall mount on a stainless steel clear pipe span of the appropriate nominal size, either on a vertical upflow of 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 be compatible with 2” through 4” diameter stainless steel and brass pipe. Detectors shall have a sensitivity of 3 gallons (11.35 liters) per minute minimum and a static pressure of 450 psi for 2” – 4” diameter pipes. The detector shall respond to water flow in the specified direction after a preset time delay. The delay mech- anism shall be a solid state unit which is field-adjustable via a dipswitch. The detector’s 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 one SPDT switch (Form C contact) and one SPST switch (normally open contact) for wiring to an alarm panel or addressable control module and local bell and/or notification device. Two conduit entrances (one knockout type) for standard fittings of commonly used electrical conduit shall be provided on the detectors. A grounding provision shall be provided. Unless noted, enclosures shall be NEMA 4 listed by Underwriters Laboratories, Inc. for indoor or outdoor use. Engineering Specification
Ordering Information
Model Numbers Nominal Pipe O.D. and Wall Thickness Hole Size LFD20 2 ” (60.3 mm OD), 3.9 mm to 4.5 mm 1-1/4" LFD25-73MM 2-1/2 ” (73.0 mm OD), 4.8 mm to 5.2 mm 1-1/4" LFD25-76MM 2-1/2 ” (76.1 mm OD), 4.3 mm to 4.7 mm 1-1/4" LFD30-2 3 ” (88.9 mm OD), 5.0 mm to 5.6 mm 2 ” LFD40 4 ” (114.3 mm OD), 5.4 mm to 6.4 mm 2" System Sensor Sales and Service © 2000 System Sensor. The company reserves the right to change product speci fications without notice. A05-0290-000 •9/00(5K)•#660 Standard Specifications Static Pressure Rating
450 PSI
Triggering Threshold Bandwidth (Flow Rate) 3 GPM (11.35 liters/minute) Maximum Surge
18 Feet Per Second (FPS)
Stainless steel and brass water pipe, 2” through 4 ” (refer to Ordering Information below) Contact Ratings One SPDT (Form C) One SPST (normally open)
0.6 A @ 125 VAC
2.0 A @ 30 VDC
8.4-35V (DC-FWR) 108-132 VAC Current Draw 300 microamps @ 12/24 V(DC-FWR) 400 microamps @ 120 VAC Conduit Entrances Two openings for 1/2 ” conduit, one open, one knock-out type Operating Temperature Range 32°F - 120 °F (0°C to 49 °C) Enclosure Rating NEMA 4 - suitable for indoor/outdoor use Cover Tamper Switch Optional, part no. 546-9000 Shipping Weight LFD20: 4.1 lbs. (1.8 kg) LFD25-73MM: 4.2 lbs. (1.9 kg) AFD25-76MM: 4.2 lbs. (2.0 kg) LFD30-2: 4.4 lbs. (2.1 kg) LFD40: 5.1 lbs. (2.3 kg) Service Use Water mist systems where low flow detection is required. Warranty 3 years U.S. Patent No. 6,084,521 3.0″ 3.75″ Pipe saddle U bolt nut Width: See Table Plastic vane Pipe U bolt 1.6″ Model Number LFD20 LFD25-73MM LFD25-76MM LFD30-2 LFD40 Width 4.6″ 4.6″ 4.6″ 5.2″ 5.7″ Overall Dimensions Installed System Sensor Headquarters
3825 Ohio Avenue
St. Charles, IL 60174 Ph: 800-SENSOR2 Fx: 630/377-6495 Documents On Demand: 1-800-736-7672 x3 Web: www.systemsensor.com System Sensor in Canada Ph: 905.812.0767 Fx: 905.812.0771 System Sensor in Europe Ph: + 44.1403.276500 Fx: + 44.1403.276501 System Sensor in China Ph: + 86.29.524.6253 Fx: + 86.29.524.6259 System Sensor in Singapore Ph: + 65.273.2230 Fx: + 65.273.2610 System Sensor in the Far East Ph: + 852.21919003 Fx: + 852.27366580 System Sensor in Australia Ph: + 613.54.281.142 Fx: + 613.54.281.172 System Sensor in India Ph: + 91.11.558.2119 Fx: + 91.11.567.6815