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Testo 552 Digital Vacuum Gauge (Bluetooth)
  • Testo 552 Digital Vacuum Gauge (Bluetooth)
  • Testo 552 Digital Vacuum Gauge (Bluetooth)
  • Testo 552 Digital Vacuum Gauge (Bluetooth)

Testo 552 Digital Vacuum Gauge (Bluetooth)

Testo Approved distributor and service company.

Includes: Testo 552 digital vacuum gauge, user manual, two AA batteries.

0560 5522
£128.25 Save 5%
Tax excluded
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The Testo 552 is a digital vacuum gauge for the precise measurement of extremely small pressures in the vacuum range. This allows you to monitor the evacuation (usually during commissioning) of refrigeration systems and heat pumps.

With the Testo 552, you can therefore measure the current pressure in a refrigeration system, and thus gather information about the degree of dehumidification and the removal of foreign matter (oils, foreign gases, etc.). A vacuum gauge is always used in conjunction with a vacuum pump (generates the vacuum). A manifold (analogue or digital) is also often used in order to obtain controlled access to the refrigeration system.

In addition to the above, the new version of the Testo 552 connects via Bluetooth with the testo Smart Probes App on your smartphone or tablet. This allows you to monitor the absolute pressure reached during the evacuation and measurement results are documented in the App and sent by e-mail report.

The Testo 552 is the only digital vacuum measuring instrument whose absolute pressure sensor, in contrast to other sensor technologies, no longer needs to be serviced, and still provides highly accurate measurement results.


Fold-out robust hook suspension device.
MiniDin connector for connection to the Testo 570 digital manifold via connecting cable.
Battery level display - supplied with two standard AA batteries with a life of up to 2,400 hours.
Temperatures - Evaporation temperature of water (H2O), ambient temperature and the temperature difference DeltaT are displayed.
Absolute pressure - Clear display of the absolute pressure value measured.
Display illumination makes it easy to read off the data, even in dark surroundings.

Testo 552 Product Video

Testo 552 Specifications
Absolute Pressure
Measuring range 0 to 26.66 mbar /
0 to 20000 micron.
Accuracy ±(10 micron + 10 % of mv) (100 to 1000 micron).
Resolution 1 micron (0 to 1000 micron) /
10 micron (1000 to 2000 micron) /
100 micron (2000 to 5000 micron) /.
Overload absolute: 6.0 bar / 87 psi
(relative: 5.0 bar / 72 psi).
General technical data
Dimensions 160 x 110 x 50 mm.
Operating temperature -10 to +50 °C.
Protection class IP42.
System requirements requires iOS 8.3 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0.
Battery type 2 AA.
Battery life 50 hrs (without Bluetooth/backlighting).
Connection 2 x 7/16“ UNF.
Interface Bluetooth® 4.0 wireless technology.
Parameter mbar; micron; mmHg; Torr; inHg; inH20; hPa; Pa.
Measuring rate 0.5 s.
Storage temperature -20 to +50 °C.
Weight 500 g.


Testo 552 Datasheet

PDF Specifications of the Testo 552 Digital Vacuum Gauge.

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Testo 552 Digital Vacuum Gauge (Bluetooth)
Cable MiniDIN connection cable. 0554 5520

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