TSI Alnor 8371 AccuBalance Air Capture Hood

The TSI Alnor 8371 AccuBalance air capture hood measures air volume flowing through registers, diffusers, grilles or the air flow entering exhaust outlets. Weighing just seven and a half pounds, 8371 is easy to carry, lift and use. Simply hold the AccuBalance up to a diffuser or grille and read direct supply or exhaust airflow on the large, backlit digital display.

TSI Alnor 8371 AccuBalance air capture hoods have a range of 30 to 2,000 cfm with an accuracy of ±5% of reading ±5 cfm. The capture hood is temperature-compensated to display a standard flow rate. The instrument can display the measured air flow in four different units: standard cubic feet per minute (SCFM), standard liters per second (Std l/s), standard cubic meters per hour (Std m3/hr), and standard cubic meters per minute (Std m3/min). All readings may also be displayed in actual flow conditions. Variable time constant modes minimize display variations for the 8371 when measuring fluctuating flows. The K factor function provides the 8371 with flexibility for measuring a variety of diffusers.

The TSI Alnor 8371 AccuBalance air capture hood consists of a fabric hood, a molded plastic base which contains an electronic meter, and a flow sensing manifold located within the base. Air flowing through the hood is measured by a hotfilm sensor located in the central hub of the flow sensing manifold. The twenty-four pairs of flow sensing ports in the manifold are strategically located so that the 8371 capture hood provides the highest degree of measurement accuracy, even in non-uniform flow conditions.

TSI Alnor 8371 AccuBalance air capture hoods ship complete with base, battery holder, four C batteries, battery compartment cover, carrying case, operation and service manual, NIST calibration certificate and 2' x 2' (610mm x 610mm) hood and frame hardware.