Thermal anemometer - testo 4250 pages

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Thermal

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anemometer

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testo 425 - With fixed flow velocity

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probe

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Measurement of flow velocity, volume flow and temperature

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Point and timed mean value calculation

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Max./min. values

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Hold button for freezing measurement value

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Display illumination

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Auto-off function

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TopSafe, protection of the instrument from dirt and impact

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(optional)

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testo 425 is a compact anamometer with a fixed thermal

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flow velocity probe. The probe head has a diameter of 7.5

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mm. With the extendable telescope (length max. 820 mm),

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the measuring instrument is suitable for flow velocity

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measurement in ducts. The testo 425 also measures

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extremely accurately in the low flow velocity range.

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The volume flow is directly shown in the display. For the

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purposes of volume flow calculation, the duct area can be

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easily entered into the testo 425. In addition to this, the

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instrument can be switched over to display the current

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temperature. Timed and point mean value calculation

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provide information on the average volume flow, flow

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velocity and temperature measurement value. The Hold

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function allows the current measurement value to be frozen

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in the display, min./max. values are also displayed at the

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press of a button.

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www.testo.com

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