Dwyer PAFS-1003 : Averaging Flow Sensor, 5-13/32" (13.73 cm) Insertion Length, 5-Year Warranty
The Series PAFS-1000 Averaging Flow Sensor from Dwyer Instruments, Inc. is designed for precise velocity pressure measurement in variable air volume (VAV) terminal units and fan terminal units. It can also monitor differential pressure in main or branch duct systems, making it a versatile choice for HVAC applications.
The sensor features two ports: the “H” port measures total pressure, while the “L” port measures static pressure. The difference between these values provides the velocity pressure, ensuring accurate airflow readings.
Key Features & Benefits
- Flexible Installation: Equipped with a mounting flange compatible with both round and rectangular ducts.
- High-Quality Tubing: Uses 1/4" ID, 3/8" OD tubing for secure connections.
- Durable Design: Reliable performance even in retrofit installations.
Applications
- Zone control in HVAC systems.
- Retrofitting airflow measurement systems in existing HVAC setups.
Installation Guidelines
- Verify that the tubing is free from sharp bends or creases to prevent potential leaks as the tubing ages.
- Connect the “H” port to the high input of your differential pressure gauge, transmitter, or switch.
- Connect the “L” port to the low input of the same device.
Specifications
| Service: | Air and compatible gases. |
| Wetted Materials: | ABS/polycarbonate (UL94-5V) |
| Temperature Limits: | Operating: 40 to 120°F (4 to 49°C); Storage: -40 to 140°F (-40 to 60°C) |
| Process Connection: | 1/4˝ (6 mm) ID, 3/8˝ (10 mm) OD tubing |
| Mounting Orientation: | Integral flange with gasket |
| Weight: | 1 oz (28 g) |
| Compliance: | Meets the technical requirements of EU Directive 2011/65/EU (RoHS II) |
Datasheets
