Orion Fans

10557 Metric Drive

Dallas, TX 75243

800.323.2439

A division of Knight Electronics,

information and data are subject to

change without prior notification.

Model No.

Description

Weight

AFM-01NC

Air-flow switch, NC with mounting clip and clamp (for attaching to existing fan assembly)

6 g (0.2 oz)

AFM-01NO

Air-flow monitor, NO with mounting clip and clamp (for attaching to existing fan assembly)

6 g (0.2 oz)

AFM-80NC

Air-flow monitor, NC with 80 x 80mm (3.15”) plastic finger guard

20 g (0.7 oz)

AFM-80NO

Air-flow monitor, NO with 80 x 80mm (3.15”) plastic finger guard

20 g (0.7 oz)

AFM-92NC

Air-flow monitor, NC with 92 x 92mm (3.62”) plastic finger guard

20 g (0.7 oz)

AFM-92NO

Air-flow monitor, NO with 92 x 92mm (3.62”) plastic finger guard

20 g (0.7 oz)

AFM-120NC

Air-flow monitor, NC with 120 x 120mm (4.27”) plastic finger guard

31 g (1.1 oz)

AFM-120NO

Air-flow monitor, NO with 120 x 120mm (4.27”) plastic finger guard

31 g (1.1 oz)

AFM Series

Air Flow Monitor

The air-flow monitor provides a simple alternative to indicate positive or negative air flow of fans or blowers.

When properly installed and connected in series with an optical (i.e. LED) or audible signaling device, a bi-

directional switch will activate an electrical contact if the air flow of the fan falls below 8.2 ft/s, turning the

signaling device on or off. The AFM monitor can also be attached to an existing grill or guard.

www.orionfans.com

Specifications

Contact Type: Reed/magnet contact

NC (Normally Closed): Contact open with air flow

NO (Normally Open): Contact closed with air flow

Switching Threshold of Air Flow Speed: >8.2 ft/s

(2.5 m/s)

Hysteresis: 3.3 ft/s (1m/s) - fixed

Contact Resistance Incl. Wire: 370m (1214”)

Service Life: >100,000 cycles

Maximum Switching Capacity: 10W (resistive load)

Maximum Switching Voltage: NC - AC/DC 240V

NO - DC 60V

Maximum Switching Current: NC - DC 500mA

NO - DC 170mA

Connection: 2 x single strand AWG26, length 500mm

(20”), tip of stranded wire stripped/tinned 5mm (0/20”)

Mounting: Attachment clamp and/or clip, or integrated in

protective grill

Mounting Position: Air-flow monitor opening

perpendicular to air flow

Operating Temperature: -20 to 50°C (-4 to 122°F)

Storage Temperature: -20 to 80°C (-4 to 176°F)

Housing: Plastic, UL 94HB, black

Dimensions: 34 x 17.5 x 7.5mm (1.3 x 0.7 x 0.3”)

Protection Type: NEMA 1 (IP 20)

Agency Approvals: CE

RoHS Compliant

Dimensions: mm (inch)

Wiring Example

Air-flow monitor integrated

in a protective grill

+

−

80 x 80

(3.15 x 3.15)

92 x 92 / 120 x 120

(3.62 x 3.62 / 4.72 x 4.72)

7.5 (0.3)

17.5

(0.7)

34 (1.3)

e.g signal

device