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TEK-AIR FLOWMETER - TFP5000 SERIES - DIFFERENTIAL PRESSURE AIRFLOW PROBES

 

TFP5000 Airflow Measurement Insertion Probes can be easily installed in either new or existing ductwork by simply cutting small entry holes in either side of the duct and installing sensors across the duct area. Where the sensor must be removed for periodic inspection or cleaning, insertion probes provide an excellent measurement solution. Tek -Air's TFP5000 series probes are manufactured in one inch increments in lengths from 4 to 120 inches long; for rectangular, circular, and oval ductwork. Achievable accuracies are typically within 2 percent of the actual airflow.

Tek-Air TFP5000

 

GUIDE SPECIFICATION
Provide where indicated in the plans, airflow traverse probes of the amplified differential pressure type. Probes shall be designed for insertion across either height or width of the duct. Provide sufficient probes in each duct location to meet the recommendations of the manufacturer.
Probe design shall be such that the effect of angular airflow velocities is minimized. The sheet metal contractor, in accordance with the probe manufacturer's minimum installation recommendations, shall install probes. Probes shall be extruded aluminum with hard anodized coating. Where corrosion is a concern, provide 304 stainless steel construction. Multiple probes shall be externally manifolded for proper pressure averaging.


Principle of operation
TFP5000 probes are extruded aluminum bars, with a dual chamber design. Bars are manufactured in lengths, which traverse the ductwork. Sensing holes with chamfered inlets are drilled along the upstream face of the bar.Along the downstream side of the bar, pairs of holes are drilled. Each hole is angled from the centerline of the bar. Figure one shows the cross section of a TFP5000 probe.
Moving air impacts the airstream side of the bar, creating a high-pressure zone in front of the bar. The pressure moves through the hole into the forward chamber of the bar where it is averaged with pressures of the other holes. The chamfer at the upstream hole reduces the effect of angular velocities.

Applications

Commercial and institutional applications
Hospitals
Cleanrooms

Tek-Air TFP5000 Drawing

 

 

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