Dwyer DAFA-1 : Air Flow Indicator and Alarm: Designed for air flow monitoring in 3" and 4" pipes, this device operates with a 3V CR2450 lithium battery, which is included and easily replaceable by the user
The Model DAFA Air Flow Indicator and Alarm is a reliable solution for monitoring air flow in 3" and 4" pipes. It uses a thin, field-trimmable vane to detect air flow rates, providing immediate alerts when low or no flow conditions are detected. The device features an 85 dB audible buzzer and a bright red LED, which alternate to ensure clear notification of any air flow issues. Powered by batteries for versatile installation, the DAFA also includes a yellow LED to indicate low battery status. Ideal for radon mitigation systems, it detects air flow loss and alerts homeowners if the fan stops operating, ensuring safety and system effectiveness.
Specifications
| Service: | Clean Air |
| Actuation Point: | 15 CFM (4˝ pipe); 10 CFM (3˝ pipe) on decrease in flow |
| Audible Alarm: | At least 85 dB @ 1 foot distance |
| Visual Alarm: | Red LED for no flow alarm; Yellow LED for low battery |
| Wetted Materials: | ABS, polycarbonate, rare earth magnet |
| Power Requirements: | 3 V CR2450 lithium battery, included, user replaceable |
| Battery Life: | 5 years steady state; 48 hours during alarm state |
| Temperature Limits: | 32 to 122°F (0 to 50°C) |
| Mounting Orientation: | Vertical |
| Weight: | 4 oz (113.4 g) |
| Compliance: | CE. |
Datasheets
