Multi-Point Measurement of HVAC Duct Airflow

multipoint hvac airflow measurement
February 21, 2020 | Posted By: Jan Fischer

HVAC Series “Analyzing Airflow” Part 2:
Multipoint Measurement HVAC Duct Airflow 

Note: Part 3 of our HVAC Series – Analyzing Airflow discusses available configuration options from Degree Controls and describes our embedded platform solution for a large duct application. 

The °C SPAR Sensor Pole Array from Degree Controls is optimal for in-duct HVAC airflow analysis. It is a linear array of airflow sensors assembled into a single tube element with USB outputs. The °C SPAR is designed for multipoint experimentation where there are predefined measurement locations, just as shown in the Log-Tchebycheff Rule for calculating volumetric flow within ducts. With the °C SPAR, air velocity, temperature, and humidity can be measured and recorded at multiple points in real-time for building duct performance testing.

hvac technician at work

Multi-Point Airflow Measurement with ANSI/ASHRAE Standard for Traversing a Duct

The °C SPAR is built to client specified dimensions, including tube length, sensor quantity, pitch, and calibration range. °C SPARs reduce set-up time by eliminating complex fixturing that goes along with making multiple measurements across a plane, and °C SPARs increase test repeatability. Very little impedance is imparted to the air-flow profile.

hvac airflow diagram

Multi-Channel Data Acquisition Instrumentation for HVAC Duct Airflow Analysis

DegreeC manufactures both instrumentation-class airflow sensors and sensors embedded in some of the world’s most demanding products. These airflow monitoring solutions are for electronics, laboratory, building, and industrial safety applications to bring air precisely where it’s needed. We also develop custom fan and heater controllers for OEM applications.

Consult with an HVAC Airflow Sensor Specialist

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About the Author

Jan Fischer
Jan Fischer

Having joined DegreeC in 2009, Jan has over a decade of experience consulting professionals in a wide range of industries on methods for using airflow sensors and instrumentation to collect data for testing and analysis.