Series AVFS Air Flow Switch

Monitors Flow in Ducts with Contact Output and Local LED Indication

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.

Product Applications

Fan monitoring
Filter monitoring
Damper feedback
Air handlers

Starting at $336.45

Ordering

Grouped product items
Model	Description	Availability*	Qty	Price
AVFS-1	Thermo air flow switch, 80-250 AC/DC.	1-3 days*		$336.45
AVFS-2	Thermo air flow switch, 24 VDC.	1-3 days*		$336.45

Specifications

Air Velocity Range:: 197-1969 FPM (1-10 m/s).
Temperature Limits:: 5 to 122°F (-10 to 50°C).
Humidity Limits:: 0-90% RH.
Wetted Materials:: PBT body, titanium sensor.
Pressure Limit:: 14.7 psig (1 bar).
Housing:: PBT.
Repeatability:: ±5% FS.
Switch Type:: N.O. SPST.
Electrical Rating:: 3 A @ 30 VDC/250 VAC.
Response Time:: 3-60 seconds. Varies with flow and set point.
Power Requirement:: AVFS-1: 80 to 250 AC/DC (47 to 63 Hz AC). AVFS-2: 24 VDC ±25%.
Power Consumption:: 3 VA.
Electrical Connection:: 6.5' (2 m) cable.
Enclosure Rating:: IP65.
Display:: 1 Red LED/1 Green LED.
Weight:: 7.2 oz (203 g).
Compliance:: CE.