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.  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 7 seconds, then a red ALARM indicator begins flashing, an audible alarm is initiated, and the SPDT output relay is thrown.
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Air Flow Monitors

Low Range Air Flow Monitor
List Price $548.00
Air Flow Monitors

High Range Air Flow Monitor
List Price $548.00
Air Flow Monitors

Low Range 7.5 Inch (in) Probe Air Flow Monitor
List Price $180.00
Air Flow Monitors

High Range 7.5 Inch (in) Probe Air Flow Monitor
List Price $180.00
Description N/A The Low Range AFM monitors air flows from 50 to 500 feet per minute (FPM) (15 to 150 meters per minute).
  • Air Flow Range: 50 – 500 FPM (15 to 150 meters per minute)
  • Working Temperature Range: 64 – 82 °F (18 – 28 °C)
  • Alert Relay: Single Form C (SPDT), NO or NC
For High Range air flow from 500 to 2500 FPM (150 to 760 meters per minute), see the F82057-110 Air Flow Monitor, High Range. 		N/A The High Range AFM monitors air flows from 500 to 2500 feet per minute (FPM) (150 to 760 meters per minute).
  • Air Flow Range: 500 – 2500 FPM (150 to 760 meters per minute)
  • Working Temperature Range: 64 – 82 °F (18 – 28 °C)
  • Alert Relay: Single Form C (SPDT), NO or NC
For Low Range air flow from 50 to 500 FPM (15 to 150 meters per minute), see the F82057-100 Air Flow Monitor, Low Range 		N/A The Low Range AFM probe monitors air flows from 50 to 500 feet per minute (FPM) (15 to 150 meters per minute).
  • Air Flow Range: 50 – 500 FPM (15 to 150 meters per minute)
  • RJ11 4-conductor phone jack connection to Air Flow Monitor controller
 		N/A The High Range AFM probe monitors air flows from 500 to 2500 feet per minute (FPM) (150 to 760 meters per minute).
  • Air Flow Range: 500 – 2500 FPM (150 to 760 meters per minute)
  • RJ11 4-conductor phone jack connection to Air Flow Monitor controller
Brands N/A Hampshire Controls
Air Flow Range N/A Low 50 to 500 fpm15 to 150 m/min N/A High 500 to 2500 fpm150 to 760 m/min N/A Low 50 to 500 fpm15 to 150 m/min N/A High 500 to 2500 fpm150 to 760 m/min
Quantity N/A 2 N/A 2 N/A N/A
Cryogenic Resistance Temperature Detector (RTD) N/A 100 Ohm N/A 100 Ohm N/A N/A
Diameter N/A 5/16 in
Sheath Length N/A 7.5 in
Material N/A Stainless Steel Sheath N/A Stainless Steel Sheath N/A N/A
Lead Length N/A 10 ft
Working Temperature Range N/A 18 to 28 ºC64 to 82 ºF N/A 18 to 28 ºC64 to 82 ºF N/A N/A
Output Relay (Dry Contacts) N/A Single Form C (Single Pole Double Throw (SPDT)), Normally Open (NO) or Normally Closed (NC), Relay Thrown when Air Flow below Setpoint for >7 N/A Single Form C (Single Pole Double Throw (SPDT)), Normally Open (NO) or Normally Closed (NC), Relay Thrown when Air Flow below Setpoint for >7 N/A N/A
Features N/A
  • 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 indicators
  • Relay contact output to activate central alarm systems and automatic notification systems
  • Easily accessible probe, power, and relay connections
Available Options N/A
  • Low Range (LR: 50 to 500 FPM) or High Range (HR: 500 - 2500 FPM)
  • On-demand 6-minute audible alarm muting
  • Adhesive VELCRO® mounting or interlocking wall mounting bracket