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Thermal fiber wind velocity meter – testo 425

Producer: TESTO

SKU: TESTO-0560-4251 Category: Gas concentration measuring device

Measure temperature as well as calculate volume flow automatically
Tele probe – can extend up to 820 mm, diameter 7.5 mm
Single and multi-point averaging function
Function to display HOLD, Max./ Min. values, automatically turn off the device

Checking the function of ventilation and air conditioning systems includes monitoring the flow rate in the ventilation ducts. If the wind speed and volumetric flow rate are not set correctly, the air quality in the room may be affected. That's why the testo 425 thermal anemometer is here to support you.

To determine whether the air conditioning and ventilation system is operating normally or not? You need to check the flow rate or volumetric flow rate inside the ventilation ducts. If the air flow rate is too low, it means poor air circulation, leading to suboptimal air quality in the room. This will no longer be a problem: the testo 425 thermal fiber anemometer has your back.

Measure velocity and flow in ventilation ducts with the testo 425

Provide cover: Testo 425 wind velocity meter (fixed measuring head), battery and factory test paper.

Outstanding features of the testo 425 wind velocity meter

testo 425 allows quick measurements in ventilation ducts. It records temperature, flow rate and calculates volumetric flow automatically. With a measuring range of 0 to +20 m/s, this anemometer is especially suitable for applications with low air flow speeds.

The testo 425 with thermal fiber teleprobe (fixed) can extend up to 820 mm and has a diameter of 7.5 mm.

In addition to air flow rate, do you want to measure volume flow on a ventilation or air conditioning system? This is not difficult for the testo 425. Simply enter the required duct surface parameters and it will automatically calculate the parallel volume flow during flow measurement. testo 425 also supports you to calculate single or multiple average values.

With the built-in display light, you can easily measure and read instant measurement data, average value, Max./ Min. even in low light conditions. By using the HOLD button, you will retain the current measurement value to compare with another value. In addition, you do not need to worry because testo 425 is also equipped with an Auto-off feature. This feature helps save battery life and increase the life of your testo 425 anemometer.

Our advice when buying a testo 425 is that you should also buy: a specialized bag or suitcase to carry the device and a TopSafe protective cover (to protect the testo 425 from water, dust and direct impacts that can break the testo 425). device).

Technical specifications of testo 425

Temperature – NTC
Measuring range	-20 to +70 °C
Accuracy	±0.5 °C (0 to +60 °C) ±0.7 °C (Remaining range)
Resolution	0.1°C

Temperature – NTC

Measuring range

-20 to +70 °C

Accuracy

±0.5 °C (0 to +60 °C)

±0.7 °C (Remaining range)

Resolution

0.1°C

Wind velocity – Thermal fiber sensor
Measuring range	0 to +20 m/s
Accuracy	±(0.03 m/s + 5 % measured value)
Resolution	0.01 m/s

General specifications
Weight	285 g
Size	182x64x40mm
Operating temperature	-20 to +50 °C
Shell material	ABS
Battery type	Block battery 9V, 6F22
Battery life	20 hours
Storage temperatures	-40 to +70 °C