Air & Velocity Sensors by Dwyer Instruments

Description

Dwyer extensive range is functional and specified to many industries. The range includes:

• The Series AAFS Adjustable Air Flow Paddle Switch is capable of detecting a wide range
  of air velocities with minimal user calibration. Quality features include a
  stainless steel vane, galvanized steel base, and ABS enclosure.
• The Series AVFS Adjustable Air Flow Switch is specifically designed to monitor
  air flow in ducts and provides a 3 A contact output to indicate a change or
  loss of flow. The AVFS provides a 5% set-point repeatability across a full
  scale range of 1-10 m/s (197-1969 fpm) and includes a mounting bracket for
  quick duct mounting.
• The Series
  AVUL Air Velocity Transmitter quickly and accurately measures air
  velocity or volumetric flow in imperial or metric units. Simultaneous current
  and voltage outputs on all models provide universal inputs to monitoring
  equipment while the output range, units, and 0 to 5/10 VDC output can be
  configured via local DIP switches. The optional integral display, or the
  portable remote display tool, provide a convenient way to locally monitor
  process values and configure the unit. Models are available in 3% and 5% accuracy
  models to suit a variety of needs, and the optional BACnet MS/TP or Modbus
  RTU/ASCII communication protocol allows units to be daisy-chained while
  providing access to all of the velocity and flow data, as well as additional
  information such as air temperature.
• The Series
  FLST Airflow Measurement Station is easy to install — simply connect
  the tubing to the station fittings, then to a differential pressure manometer,
  gage, transmitter or switch. Single or multiple airflow elements are factory
  mounted and pre-piped in a casing designed for flanged connection to the duct work.
  Standard materials consist of a G90 galvanized casing and 6063-T5 anodized
  aluminum flow sensors, suitable for most HVAC applications. The
  Series FLST utilizes an airflow averaging element in a head-type device,
  generating a differential (velocity) pressure signal similar to the orifice,
  venturi, and other had producing primary elements. Strategically located
  sensing ports continually sample the total and static pressures when inserted
  normal to flow.Total pressure sensed by the upstream ports are continually
  averaged within the airflow element in an isolated chamber. The static sensing
  ports are averaged in a second isolation chamber. Multiple elements are joined
  together for connection to a differential measurement device (gage,
  transmitter, etc.) for flow measurement and indication purposes.
• The Series PAFS-1000 Averaging Flow Sensor is
  ideal for sensing differential pressure in the inlet section of variable air
  volume terminal units and fan terminal units. Units can also be used to sense
  differential pressure at other locations in the main or branch duct systems. The “H” port senses total pressure and the
  “L” port senses static pressure. The difference between these signals
  is the differential, or velocity pressure. For models PAFS-1002 to PAFS-1005,
  up to four sensing points and lengths of 3-5/32″ to 9-29/32″ (8.02 to
  25.26 cm) to accommodate box size diameters of 4″ to 16″ (10.16 to
  40.64 cm) are available. For models PAFS-1006 to PAFS -1011, up to 10 sensing
  points and lengths from 12-1/2″ to 23-29/32″ (31.75 to 60.72 cm) are
  available to accommodate appropriately sized duct dimensions.