The highly accurate differential pressure meter, testo 521, with an internal pressure sensor from 0 to 100 hPa, is ideal for pitot tube measurements in the range of 5 to 100 m/s. The testo 521 is available in 2 accuracy classes, the testo 521-1 with an internal pressure sensor with Class 0.2, and the testo 521-2 with an internal pressure sensor with Class 0.1.

In the case of velocity speeds in the range of 1 to 12 m/s, you can carry out accurate measurements using the 100 Pa probe, which can be attached externally.

The measurement data can be saved according to location, and analyzed on your PC, or printed on site on your testo printer.

Features:

Integrated differential pressure sensor with an accuracy of 0.2 % of f.v.
Calculation of the flow velocity and the volume flow via Pitot tube (optional)
Multi-point and timed mean calculation
2 probe inputs for additional pressure and temperature probes

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TESTO 175T3 - TEMPERATURE DATA LOGGER

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• Rugged and waterproof according to IP65

TESTO 735-2 - MULTICHANNEL THERMOMETER

• Up to 3 connectable and 3 wireless temperature sensors
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TESTO 872 - THERMAL IMAGER WITH APP

• Highest image quality: IR resolution of 320 x 240 pixels, via integrated testo SuperResolution Technology 640 x 480 pixels
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TESTO 184 T3 - TEMPERATURE USB TRANSPORT DATA LOGGER WITH LCD DISPLAY

• Long battery life of up to 500 consecutive days with large memory capable of 40,000 readings
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TESTO 845 WITH INTEGRATED HUMIDITY MODULE - INFRARED TEMPERATURE MEASURING INSTRUMENT WITH INTEGRATED HUMIDITY MODULE

• Switchable optics for far-field (75:1) and close-focus (1 mm, distance 70 mm) measurements
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• Instrument memory for 90 measurement protocols
• Visual and acoustic alarm if limit values exceeded

TESTO 608-H1 - THERMAL HYGROMETER

• With dew point calculation and max/min display
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• Large, clear display
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TESTO 545 - LIGHT METER

• Precise light intensity readings in lux
• Large memory of up to 3,000 readings
• Selective / time-based averaging
• Measuring site management with optional software: up to 99 measuring sites available

TESTO 770-1 - HOOK CLAMP METER

• Unique hook-on function separates and grabs wires, without using your hands
• Retractable post makes hook release fast and easy
• Inrush (starting) current capture, APO (Auto Power Off), and Min / Max / Hold

TESTO 312-3 - PRESSURE MEASURING INSTRUMENT UP TO 300/6000 HPA

• Load and tightness tests of gas pipes
• Pressure testing of water pipes using air
• Switchable measuring ranges with high resolution
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