Testo 552 Vacuum Gauge (TES-552)

SKU: TES-552
Regular price £153.90 GBP
Manufacturer Part Number: 0560 5522

  • Control and read complete measurement via smartphone
  • Extremely precise, extremely rugged, extremely practical – with visual alarm and backlit display
  • App for creating on-site reports
  • Sending measurement protocols by e-mail
  • High-precision measuring technology
  • Extremely robust

Extremely precise, rugged and practical: the Testo 552 digital vacuum gauge. Ideal for evacuating refrigerant systems or heat pumps.


The testo 552 is a digital vacuum measuring instrument for the evacuation of refrigeration systems and heat pumps. It measures even the smallest absolute pressures and provides highly precise information on the status of the dehumidification of a system (removal of foreign substances, incl. oils or foreign gases). Its robust construction makes it suitable for daily use, and protects from dirt and water.
In addition to the above, the new version of the testo 552 connects via Bluetooth with the testo Smart 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.
  • Reporting function via connection to testo Smart App
  • Measurement of H2O evaporation temperature
  • Optical alarm when limit values are exceeded

Technical Data

Absolute Pressure

Measuring range

0 to 26.66 mbar /

0 to 20000 micron


±(10 micron + 10 % of mv) (100 to 1000 micron)


1 micron (0 to 1000 micron) /

10 micron (1000 to 2000 micron) /

100 micron (2000 to 5000 micron) /


absolute: 6.0 bar / 87 psi

(relative: 5.0 bar / 72 psi)

General technical data


500 g


160 x 110 x 50 mm

Operating temperature

-10 to +50 °C

Protection class


System requirements

requires iOS 11.0 or newer; requires Android 6.0 or newer; requires mobile end device with Bluetooth 4.0

Product colour


Battery type

2 AA

Battery life

50 hrs (without Bluetooth/backlighting)


2 x 7/16“ UNF


Bluetooth® 4.0 wireless technology


mbar; micron; mmHg; Torr; inHg; inH20; hPa; Pa

Measuring rate

0.5 s

Storage temperature

-20 to +50 °C