Dwyer PAFS-1006 Averaging Air Flow Sensor 13 in

Product Description

The DWYER PAFS-1006 is an averaging air flow sensor designed to measure air velocity across a duct cross-section. The probe averages multiple pressure-sensing points along its 13-inch insertion length, delivering a more representative velocity reading than a single-point measurement. It operates across a velocity range of 200 to 6,000 feet per minute (FPM) and is rated for temperatures up to 250 degrees F. HVAC technicians and air balancing professionals install this type of sensor in commercial and industrial duct systems where accurate airflow measurement is required for commissioning, trending, or controls integration.

The PAFS-1006 is suited for installation in rectangular or round duct systems where a single traverse-point probe would introduce unacceptable measurement error. Typical applications include air handling units, mixed-air plenums, and main supply or return duct runs in commercial HVAC systems. The sensor feeds differential pressure signals to a transmitter or controller, supporting demand-controlled ventilation, economizer sequences, or general airflow monitoring. It is installed by licensed HVAC technicians or certified air balancing professionals during system commissioning or as part of a controls upgrade.

Key Features

• Averaging probe design measures velocity across multiple points for improved accuracy
• Velocity range of 200 to 6,000 FPM covers typical commercial duct applications
• 13-inch insertion length suitable for medium to large duct widths
• Maximum operating temperature of 250 degrees F
• Outputs differential pressure signal compatible with standard flow transmitters

Compatibility

Designed as an OEM-style replacement or new-installation averaging flow sensor for commercial HVAC duct systems requiring differential-pressure-based air velocity measurement.

Installation Notes

Installation is typically performed by a licensed HVAC technician or certified test-and-balance professional. Power down all associated control circuits and air handling equipment before inserting or removing the probe. Follow SMACNA and ASHRAE duct penetration guidelines for sealing and positioning the sensor relative to upstream and downstream obstructions. Connect the high and low pressure ports to the corresponding inputs on the paired differential pressure transmitter and verify port orientation before energizing the system.

Technical Specifications

• Type: Air Flow Measuring Probe
• Insertion Length: 13 inches
• Velocity Range: 200 to 6,000 FPM
• Maximum Temperature: 250 degrees F

Standard Information

• Brand: DWYER
• Manufacturer Part Number: PAFS-1006