The WFD series waterflow detectors are compatible with steel pipes between 2-8 inches and can detect waterflow in either a vertical or horizontal position. They have a rugged NEMA 4-rated enclosure, field-replaceable components, and provide reliable detection with immunity to false alarms. The detectors utilize a mechanical retard feature and dual switches to simplify installation and operation.
Intrinsic Safety Barriers limit the energy delivered from a safe area to a hazardous area. This power limitation prevents the possibility of explosions due to a malfunction of the device. IS Barriers are used instead of explosion proof conduit and heavy cast housings. Electrical energy (voltage and
current) are held within safe limits, as is total energy. This removes the possibility of an explosion due to excessive heat. Intrinsically safe design offers cost and safety advantages in industrial process measurement and control operations.
Intrinsic Safety Barriers limit the energy delivered from a safe area to a hazardous area. This power limitation prevents the possibility of explosions due to a malfunction of the device. IS Barriers are used instead of explosion proof conduit and heavy cast housings. Electrical energy (voltage and
current) are held within safe limits, as is total energy. This removes the possibility of an explosion due to excessive heat. Intrinsically safe design offers cost and safety advantages in industrial process measurement and control operations.
Tuning forks, with their stable resonant frequency, have been applied in numerous ways throughout many years. A modern application in industrial process control is the vibrating tuning fork level switch.The Jerguson Series 200 is a single point level switch which may be installed in any position in a pipe or vessel to detect the presence of a liquid.
The Series 200 employs a tuning fork style probe which vibrates at its natural frequency when in air. A piezoelectric crystal-system
is used to create a 1100 Hz vibration in the tuning fork. As the
tuning fork is covered by a liquid or slurry, a corresponding
shift occurs in the vibrating frequency of the tuning fork. This
shift is being monitored continuously and once a present threshold is exceeded, the output changes status.
Tuning forks, with their stable resonant frequency, have been applied in numerous ways throughout many years. A modern application in industrial process control is the vibrating tuning fork level switch.The Jerguson Series 200 is a single point level switch which may be installed in any position in a pipe or vessel to detect the presence of a liquid.
The Series 200 employs a tuning fork style probe which vibrates at its natural frequency when in air. A piezoelectric crystal-system
is used to create a 1100 Hz vibration in the tuning fork. As the
tuning fork is covered by a liquid or slurry, a corresponding
shift occurs in the vibrating frequency of the tuning fork. This
shift is being monitored continuously and once a present threshold is exceeded, the output changes status.
Siemens,
Catalog Thiết Bị Điện Siemens, Catalog Thiết Bị Điện,
Catalog Phụ Kiện Siemens, Catalog Phụ Kiện,
Catalog Siemens, Catalog,
http://dienhathe.com,
Chi tiết các sản phẩm khác của Siemens tại https://dienhathe.com
Xem thêm các Catalog khác của Siemens tại https://dienhathe.info
Để nhận báo giá sản phẩm Siemens vui lòng gọi: 0907.764.966
Cables radiantes, también denominados Leaky Feeder o Radiating Cable. Con esta tecnología va a permitir disponer de frecuencia banda ancha a lo largo de todo el recorrido donde vaya instalado el cable. Normalmente se instalan en túneles, minas, bien un parking o cualquier otro lugar donde se requiera de cobertura movil o radio.
Công ty Cổ phần Hạo Phương xin gửi đến quý khách hàng catalog ACB dòng DW đến từ thương hiệu Fuji Electric.
Sản phẩm dễ dàng lắp đặt, đi kèm với thiết kế thân thiện với người dùng và môi trường.
1. WFD Series
Waterflow Detector
The System Sensor WFD series is compatible
with schedule 10 through 40 steel pipe, sizes
2˝ through 8˝, and can be mounted in a vertical
or horizontal position.
Robust Construction. The WFD series consists of a rugged,
Features
NEMA 4-rated enclosure. Designed for both indoor and outdoor
• Two-inch mounting hole provided in new WFD30-2 models use, the WFD series operates across a wide temperature range, from
32°F to 120°F.
• UL-listed models are NEMA 4 rated
• Sealed retard mechanism immune to dust and other contaminants Reliable Performance. UL-listed models are equipped with
tamper-resistant cover screws to prevent unauthorized entry. Inside,
• Visual switch activation
two sets of SPDT (Form C) synchronized switches are enclosed in a
• Field-replaceable retard mechanism and SPDT switches durable terminal block to assure reliable performance.
• Rugged, dual SPDT switches enclosed in a durable terminal block
False Alarm Immunity. The WFD series incorporates a mechanical
• Accommodates up to 12 AWG wire retard feature, which minimizes the risk of false alarm due to
pressure surges or air trapped in the sprinkler system. In addition,
• Designed for both indoor and outdoor use
the mechanical retard’s unique sealed design is immune to dust and
• 100 percent synchronization activates both alarm panel and other contaminants.
local bell
Simplified Operation. The WFD series is designed to simplify
• Tamper-resistant cover screws
installation. Two conduit openings permit easy attachment to the
local alarm system. The retard mechanism and dual SPDT switches
are field-replaceable.
Agency Listings
S739 CS169 7770-1653:114 167-93-E 3006195