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LFD20 데이터시트(PDF) 2 Page - Systemsensor advanced ideas. |
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LFD20 데이터시트(HTML) 2 Page - Systemsensor advanced ideas. |
2 / 2 page Replacement Par t Number Description 546-9000 Cover tamper switch kit WFDW Tamper proof wrench for cover WFDN4 Gasket kit Low flow rate vane-type water flow 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 ver tical 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 inser ted 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 Under writers 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 reser ves the right to change product specifications 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) Compatible Pipe 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 Voltage Range 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, par t 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) Ser vice 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 |
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