A revolution in airflow measurement technology

Accurate, Repeatable Measurements for Optimal Performance

Achieve precise and consistent supply, outside, and return airflow measurements across a wide range of equipment with the TrueFit AFMS.

From small, packaged rooftop units to large, built-up air handlers, this innovative solution ensures reliable and efficient HVAC operation for enhanced performance and maximum energy savings.

Reliable. Efficient. Genius.

When it comes to airflow measurement systems, the TrueFit Airflow Measurement System stands out as the best option for value because it offers:

  • Highly accurate and repeatable measurements
  • A solution enabling ASHRAE guideline 36 sequences allowing you to use your preferred method of measurement
  • Automated field calibration for hassle-free, efficient installation
  • Integrated fault detection and diagnostics for peace of mind and simplified system management
  • Installation in nearly all equipment types
  • Low maintenance and lower cost of ownership

How It Works

The system measures outside and return air by characterizing damper performance. The controller uses the characterization curve to determine airflow at each damper angle. TrueFit measures airflow with permanently installed airflow pressure pickups, either on the supply fan or a duct traverse—and it’s not affected by ambient weather or airborne pollutants like duct open/duct closed systems.

Standard Rooftop Unit (RTU) Application
Air Handling Unit (AHU) Outside Air Damper (OAD) Pressure Assist

Key Features

Accurate Airflow Measurement

The TrueFit AFMS provides accurate and repeatable measurements for Outside, Supply, and Return airflow and is unaffected by ambient weather, airborne pollutants, or bends and restrictions in mechanical air delivery systems. Embedded performance diagnostics monitor system performance to ensure accuracy of readings.

Automated Commissioning

The TrueFit AFMS programmatically characterizes system performance during commissioning, leveraging the same methods as a TAB technician. After commissioning, integrated equipment control and system diagnostics are provided to routinely monitor and report performance.

Compliance with IAQ Regulations

Ventilation has been recognized as the first line of defense for healthy buildings. Smart infrastructure and high-performing buildings guidelines stipulate that the accurate measurement of outdoor airflow rates are a fundamental component of healthy and energy efficient building operation.

Smart Building Ready

The TrueFit AFMS is interoperable with any building automation and IoT system, delivering system performance data and diagnostics for equipment analytics. The TrueFit AFMS can operate in conjunction with existing equipment controls to empower high performance building sequences.

Built on Industry Standards

TrueFit AFMS is designed with industry standards in mind. Ventilation is recognized as the first line of defense for healthy buildings, so TrueFit systems meet ASHRAE guidelines and standards 62.1, 111, 189.1 and 170. They also help buildings meet WELL® and RESET® certifications.

Expanded Equipment Compatibility

The TrueFit AFMS can be applied to a wide range of mechanical systems, including unit ventilators, packaged rooftops, complex built-up air handlers and custom-built equipment.

Talk to your local expert to learn more about what TrueFit AFMS can do for your facility.