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AVFS-2 | Thermo air flow switch | 24 VDC. | Dwyer

Thermo air flow switch, 24 VDC.

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Dwyer AVFS-2 Documents

Instruction Manual Series AVFS Catalog Page More Info

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Details for AVFS-2

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Thermo air flow switch | 24 VDC.

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

Integral red/green air flow status LED’s
Flush sensor design limits issues due to dust or particulate in the air flow
IP65 construction

Specifications

Series: AVFS Air Flow Switch
Category/Type: Air Quality
Type: Air Flow Switches
Series: AVFS Air Flow Switch
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).
Agency Approvals: CE.