Digital Vacuum Gauge with Bluetooth

  • Measurement data monitoring via testo Smart Probes App
  • Measurement data dispatch via testo Smart Probes App
  • Extremely precise, extremely rugged, extremely practical – with visual alarm and backlit display
  • Measures pressure and calculates the evaporation temperature of H2O automatically

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

In stock Yes No
Price was € (Inc. VAT) RRP € Price was € (Ex. VAT) RRP €

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 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.

  • Reporting function via connection to testo Smart Probes App
  • Measurement of H2O evaporation temperature
  • Optical alarm when limit values are exceeded

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 8.3 or newer; requires Android 4.3 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

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