Air Flow Monitor Product Information 

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Key Features:

  • Extensive air flow range covered with low range (50 to 500 FPM) and high range (500 to 2500 FPM) probes.
  • Audible and visual alert status indications.
  • Relay contact output to activate central alarm systems and automatic notification systems.
  • On demand audible alarm mute.
  • Easily accessible probe, power, and relay connections.
  • Wall and panel mounting options available.

Our Easy-to-Use Air Flow Monitor:

Hampshire Controls' Air Flow Monitor (AFM) is a single probe instrument used for continuous monitoring of mass air flow levels within laboratory biocontainment cabinets, fume hoods, laminar flow hoods, and ventilation systems. The AFM includes audible and visual alarms and a relay output to activate remote alarm and automatic notification systems.

A single 5/16" (8 mm) diameter, rapidly and repeatably responsive probe is inserted into the air stream (see video below). A setpoint is established at the low end of the acceptable air flow range just above the desired low air flow alarm threshold. If the air flow rate drops to the setpoint, a yellow WARNING indicator is initiated. If the air flow remains below the setpoint for more than 10 seconds, then a red ALARM indicator begins flashing, an audible alarm is initiated, and the SPDT output relay is thrown.

The nominal air flow range for the Low Range AFM is 50 to 500 feet per minute (FPM) (15 to 150 meters per minute (MPM)), and for the High Range AFM is 500 to 2500 FPM (150 to 760 MPM). The AFM is intended for use in normal room and laboratory temperature environments: ~64  °F (18 °C) to ~82 °F (28 °C). Other temperature and air flow ranges are available by special request.

Above video: Setting up and using the Model "Air Flow Monitor" (8-minutes).

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