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Kestrel pocket air flow tracker launched

Richard Paul Russell Ltd has launched an air flow tracker by Kestrel Hand Held Weather Meters designed specifically for the HVAC industry.

The mobile phone-sized Kestrel 4200 Pocket Air Flow Tracker measures volume air flow, humidity ratio, temperature, relative humidity, dewpoint, barometric pressure, altitude, wet bulb temperature, wind chill, heat stress index, and density altitude, and logs 2000 data points.

“Automatic CFM and grains readings revolutionize a technician’s job by eliminating the need for reference charts, calculators or spreadsheets. And the 4200’s versatility and portability allows the user to replace multiple bulky, expensive instruments with the 113 gram Kestrel—every environmental reading can be measured and recorded with one 4200,” says Sales and Marketing Manager David Ellis.

To automatically measure volume air flow with a Kestrel 4200, the user chooses the shape of the duct or opening (rectangle or circle), then enters the dimensions and holds the unit into the air flow.

The value is displayed in cfm, m3/h, m3/m, m3/s or L/s. In order to ensure accurate readings when the air flow is fluctuating or variable across the duct, the 4200 has a simple averaging function that lets the user control the timing of the averaging.

Because the Kestrel holds the maximum and average flow values on its screen, this function is also ideal for technicians taking readings in ducts that are reachable, but may be hard to see. In addition the Bluetooth version will allow remote viewing of data via a laptop or PC eliminating uncomfortable and inconvenient viewing angles for the technician.

The 4200’s automatic humidity ratio readings are powered by the unit’s patented temperature-adjusted RH sensor, which allows the Kestrel to rapidly measure relative humidity to an accuracy of ±3%, even in changing environments.

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