552 - Digital Vacuum Gauge

For evacuation of refrigeration systems and heat pumps. Now with Bluetooth connection for wireless monitoring of measurement results.

Part Number:
0560 5522

read more


List Price:

166.80 incl. VAT)
Add To Cart




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

Technical Info:

  • Vacuum measuring range: 0 to +26.66 mbar / 0 to 20000 microns
  • Sensor overload absolute: 6 bar / 87 psi (relative: 5 bar / 72 psi)
  • Vacuum resolution: 0.01 hPa / 10 micron
  • Vacuum precision:
    • 0 to 1.33 hPa / 0 to 1000 micron: up to ±10 micron
    • 0 to 200 hPa / 0 to 150000 micron: ± 0.3% FS = ±0.6 hPA
    • 200 to 1100 hPa / 150000 to 825080 micron: ±0.3% FS = ±3.3 hPa
  • Parameter: mmHg, Torr, mbar, hPa, micron, inH20, inHg, Pa
  • Sensors: 1 x absolute pressure sensor
  • Battery life: 50 hrs (without Bluetooth/backlighting
  • Connections: 2 x ¼” SAE / 1x MiniDin (testo 570)


Technical Specification for: Testo 552 - Digital Vacuum Gauge

Product Downloads



We remain operational for Test Instrument Sales, Calibration, Servicing and Repair.

We are open and here to help support your business.

For more information click here

COVID-19: We're Open & Operational