เครื่องวัดความเร็วลม TESTO 425

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testo

testo 425 compact thermal anemometer with fixed velocity probe incl. temperature measurement and telescope (max. 820 mm), battery and calibration protocol

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anemometer testo testo 425 เครื่องวัดความเร็วลม เครื่องวัดอัตราการไหล เครื่องวัดปริมาตรลม

Testo 425

testo 425 compact thermal anemometer with fixed velocity probe incl. temperature measurement and telescope (max. 820 mm), battery and calibration protocol

The compact testo 425 anemometer with permanently attached thermal flow probe (probe head Ø 7.5 mm) incl. telescopic handle. Volume flow is shown directly in the display. Accurate volume flow calculation thanks to easy input of duct area. In addition, it is also possible to switch to the current temperature reading. Timed and multi-point mean calculation provide information on mean volume flow, flow speed and temperature reading. Min/max values can also be shown in the display. The Hold function makes it possible to freeze current readings in the display.

Temperature, flow and volume flow measurement
Multi-point and timed mean calculation
Max/min values
Hold button to freeze readings
Display light
Auto Off function
TopSafe, the indestructible protective case (optional)
TopSafe, instrument protection against dirt and knocks

Storage temperature	-40 to +85 °C
Operating temperature	-20 to +50 °C
Battery type	9V block battery, 6F22
Battery life	20 h
Weight	285 g
Dimensions	182 x 64 x 40 mm
Material/Housing	ABS

Probe type NTC
Meas. range	-20 to +70 °C
Accuracy	±0.5 °C (0 to +60 °C) ±0.7 °C (remaining range)
Resolution	0.1 °C
Probe type Thermo
Meas. Range	0 to +20 m/s
Accuracy	±(0.03 m/s +5% of mv)
Resolution	0.01 m/s