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Home » Product List » HVAC pressure switch » Air Flow Switch (AFS)
Product Details
Air Flow Switch (AFS)
Product Description
The AFS is a general purpose airflow proving switch designed for HVAC, detection of blocked filters and fan suction, air flow monitoring in ducts, pipes, tunnels, and other energy management applications. It may be used to sense positive, negative or differential air pressure.
Pressure Range: 0. 05+/-0. 02" W. C. to 12" W. C.
Differential: 0. 1+/-0. 02" W. C. To 0. 8" W. C.
Electrical Rating: 300 VA pilot duty at 115-277VAC, 10amp, non-inductive, 277VAC, 60Hz
Contact Arrangement: SPDT
| Model | AFS-222 | AFS-262 | AFS-460 |
| Media | Air | Air | Air |
| Mounting Position | Diaphragm in any vertical plane | Diaphragm in any vertical plane | Diaphragm in any vertical plane |
| Field Adjustable Range | 0.05 ± 0.02" W.C. to 12.0" W.C. | 0.05 ± 0.02" W.C. to 2.0" W.C. | 0.4 0± 0.06" W.C. to 12.0" W.C. |
| Switch Differential | Progressive, increasing from approximately 0.1 ± 0.02" W.C at minimum set point, to approximately 0.8" W.C. at maximum set point. | Progressive, increasing from approximately 0.1 ± 0.02" W.C at minimum set point, to approximately 0.1" W.C. at maximum set point. | Progressive, increasing from approximately 0.1 ± 0.02" W.C at minimum set point, to approximately 0.8" W.C. at maximum set point. |
| Maximum Pressure | 0.5psi (0.03bar) | 0.5psi (0.03bar) | 0.5psi (0.03bar) |
| Operating Temperature Range | -40C~82C | -40 C~82C | -40C~82C |
| Electrical Rating | 300 VA pilot duty at 115-277VAC, 10amp, non-inductive, 277VAC, 60Hz. | 300 VA pilot duty at 115-277VAC, 10amp, non-inductive, 277VAC, 60Hz. | 300 VA pilot duty at 115-277VAC, 10amp, non-inductive, 277VAC, 60Hz. |
| Electrical Connections | Screw top terminals with cup washers | Screw top terminals with cup washers | Screw top terminals with cup washers |
| Sample Line Connections | Ferrule and nut compression type connectors that accept 0.25" OD rigid tubing. | Ferrule and nut compression type connectors that accept 0.25" OD rigid tubing. | Ferrule and nut compression type connectors that accept 0.25" OD rigid tubing. |
| Contact Arrangement | SPDT | SPDT | 2 SPST-NC (manual reset) |
| Model NO.: | AFS |
|---|---|
| Standard: | CE |
| Trademark: | LEFOO |
