Testo 552 (0560 5522)
Digital Vacuum/Micron Gauge with Absolute Pressure Sensor and Bluetooth

  • Precise and reliable vacuum measurements, 1 micron resolution
  • Displays the saturation temperature of H20 to ensure full and proper evacuation
  • Illuminated, backlit display with visual alarm for evacuation pressure
  • Wireless Bluetooth communication to smart phone or tablet provides powerful analysis and reporting to display data, create reports, and send via email or SMS
  • Measuring range: 0 to 0.40 psi / / 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)
    • 500 micron (5000 to 10000 micron)
    • 5000 micron (10000 to 20000 micron)
  • Overload absolute: 87.0 psi / 87 psi / absolute: 6.0 bar / 87 psi; (relative: 72.5 psi / 72 psi) / (relative: 5.0 bar / 72 psi)
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Testo 552 Shown
Product Information
Datasheet 384 KB PDF
Manual 1.43 MB PDF
PDF HelpPDF Help

The Testo 552 Digital Micron Gauge is ideal for monitoring the evacuation of air conditioning, refrigeration, and heat pump systems. It is rich in features that make your work faster, easier, and more accurate.

Precise deep vacuum measurements, measuring down to single digit resolutions, are done with Pirani sensors. The Testo 552 has real time calculations for the saturation temperature of water, which determines the proper micron/temperature levels at which moisture is removed from the system. These internal calculations inform you when/if the pressure is low enough to meet your evacuation target. This saves time and provides you with the assurance that the system is now free from moisture and contaminants. User defined alarm points alert you when target values are reached. The Testo 552 with Bluetooth links to your smart phone or device. The Testo 552 uses the free testo SMART Probes App which is a powerful and easy-to-use tool. It allows you to remotely read measurements of 1 to 6 Smart Probes including the Testo 552. You can easily document / report the results.

Connect to the Testo 570 Digital Manifold
When you connect the Testo 552 Digital Vacuum Gauge to the Testo 570 Digital Manifold, you can save the Testo 552's readings directly on a laptop via the optional EasyKool software. This allows data-logging and/or on-site printing.

Complying with manufacturer's specifications
Some manufacturers specify the desired micron lower limit that must be achieved to evacuate their air conditioning systems and how long this pressure must be maintained. Compliance with these specifications is simple and easy thanks to the flexible setting of the alarm threshold in the Testo 552.

Evacuating AC/R systems
The Testo 552 Digital Vacuum Gauge is for the evacuation of heat pumps, air conditioning, and refrigeration systems. The innovative 552 utilizes a sensor that, unlike the competition, requires no cleaning and is not affected by contamination. Never worry about a dirty sensor causing false readings. Trust your Testo 552 to always be accurate.

Testo Smart Probes App
The Testo Smart Probes App combines the power of the smart phone/tablet with the accurate measurements of your Testo 552. The operation and display of the instruments are communicated via Bluetooth to the App on your smart phone or tablet. The Smart Probes App uses the measurements to create custom reports (including added photos and comments). Information and reports can be saved as files and/or sent by e-mail. For Apple iOS and Android.

Download the app:
Android app on Google Play
Product Videos
Evacuation Of A Refrigeration System - Testo 552 Vacuum gauge
Evacuation Of A Refrigeration System - Testo 552 Vacuum gauge
Ordering Information
Model Description Buy Online Price
MFR ID: 0560 5522
Testo 552 (0560 5522) Digital Vacuum/Micron Gauge w/Absolute Pressure Sensor, Bluetooth Buy  Now Sale $170.10
(Reg. $189.00)
Included Accessories
  • 2 - AA Batteries
  • 1 - User manual
  • 1 - Calibration protocol
Optional Accessories
0554 5520
MFR ID: 0554 5520
Testo 0554 5520 MiniDIN Connection Cable Buy  Now Sale $22.50
(Reg. $25.00)
Compatible Products
MFR ID: 0563 5703
Testo 570 (0563 5703) Valve Digital Manifold with Vacuum and Data Logging Buy  Now Sale $675.00
(Reg. $750.00)