Testo 400563 4251 425 Anemometer Kit

Testo 400563 4251 425 Thermal Anemometer Kit

Direct display of volume flow, air velocity and temperature

The compact Testo 425 anemometer with permanently attached thermal flow probe and telescopic handle is perfect for duct testing. Volume flow is shown directly in the display, and an accurate volume flow calculations are easy thanks to easy input of duct area. It is also possible to switch to the current temperature reading. Timed and multi point mean calculation provide precise information on mean volume flow, flow speed, and temperature reading. Minimum and maximum values can be shown in the display, and 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
• Maximum and minimum values
• Hold button to freeze current readings
• Display light
• Auto Off function
• Permanently attached flow probe
• Temperature measurement
• Telescopic handle with a maximum length of 820 millimeters
• Battery
• Calibration protocol
• Soft Carry Case

Technical Data

0 to +20 meters per second

-20 to +70 degrees C

±(0.03 meters per second +5 percent of mv)

±0.5 degrees C (0 to +60 degrees C)

±0.7 degrees C (remaining range)

0.01 meters per second

7 1/8 x 2.5 x 1.5 inches