Mechanical ductwork is the most common means for distributing the conditioned air throughout most commercial buildings. The duct system provides the best opportunities for accurate airflow measurement due to its controlled dimensions, and the typical obstructions found within a duct system are generally well defined.
The products below are commonly used for this application.
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ELECTRA-flo 5 Series Thermal Airflow Measurement System
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ELECTRA-flo/S5-CM Thermal Airflow Measurement Station
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FAN-E Pitot Airflow Measurement Traverse Station
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ELECTRA-flo/SD Thermal Airflow & Temperature Measurement System
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VOLU-probe Pitot Airflow Measurement Traverse Probe
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VOLU-probe/VS Pitot Airflow Measurement Traverse Station
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VELTRON II Transmitter
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VELTRON DPT 2500-plus Transmitter
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Aluminum LO-flo Pitot Airflow Measurement Traverse Station