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LFD20 데이터시트(PDF) 2 Page - Systemsensor advanced ideas.

부품명 LFD20
상세설명  Low Flow Rate Waterflow Detectors
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제조업체  SYSTEMSENSOR [Systemsensor advanced ideas.]
홈페이지  http://www.systemsensor.com
Logo SYSTEMSENSOR - Systemsensor advanced ideas.

LFD20 데이터시트(HTML) 2 Page - Systemsensor advanced ideas.

  LFD20 Datasheet HTML 1Page - Systemsensor advanced ideas. LFD20 Datasheet HTML 2Page - Systemsensor advanced ideas.  
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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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