Airflow Switches and Sensors Have Selectable Options

January 18, 2024 | Posted By: Degree Controls Inc.
Airflow Switches and Sensors Have Selectable Options

Not everyone uses Degree Controls sensors in the same way, and OEM applications often have unique requirements. To meet the needs of our customers, we provide configuration options for our airflow switches and sensors. You can select features like air velocity profile or trip point, supply voltage, analog output, digital communication, and mechanical length.

Diagram showing the configuration of airflow sensors

In large duct applications, a single measurement is not always adequate for determining average velocity1. For a case such as this, one of our clients selected sensor output options to use a set of F500 series velocity sensors to communicate in a master/slave arrangement and average airflow measurements taken at multiple points along a duct. The master sensor was configured with analog output and simultaneous UART communication, and the slaves were configured with digital output only. Sensors were installed such that each slave communicates velocity reading(s) to its neighbor while the master records its own velocity reading, averages readings from all sensors in the network, and then transmits average velocity to the BMS (Building Management System) using its 0-10V analog output.

Not only are Degree Controls airflow products configurable, but we can also adapt our designs to provide customized airflow switches and sensors. Customizations we’ve done include:

  • Cable assemblies and connectors
  • Different calibrated velocity ranges
  • Customizable mechanical interfaces (mounting flanges, fittings, covers, other) as well as averaging/smoothing functions for turbulent flow and BACnet capability.

1The OSHA Technical Manual (OTM) provides technical information and guidance on workplace hazards and controls. Section III: Chapter 3 covers ventilation and discusses duct velocity measurements.

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