Testo 552 Digital Vacuum Gauge

  • Highly accurate absolute pressure sensor
  • 2400 hours of battery life
  • Measures H2O Evaporation Temperature
More Info
In Stock - Available Next Day

Testo 552 Digital Vacuum Instrument

The Testo 552 Digital Vacuum instrument is one of Testo’s latest additions to its extensive, accurate product range. This particular device specialises in measuring precise pressures and providing detailed information and status on the dehumidification of a system. (Dehumidification often relates to the removal of foreign substances including gases, oils) This evacuation is an important procedure that often takes place on refrigeration systems or heat pumps during service and maintenance. A further advantage of this instrument is that it is compatible with the Testo Smart Probes App via a Bluetooth connection to the user's smartphone.

Testo Smart App

The Testo Smart App is a free to download App on iOS and Android, suitable for use in all refrigeration, air conditioning, heating and ventilation applications. Users are able to operate, measure and document test results when using the Smart App alongside all compatible Testo Bluetooth enabled measuring instruments. Pro measurement programs air balancing and multi site measurements allow numerous sites to be managed simultaneously.

The App is easy to use thanks to the intuitive measurement menus with quick configuration and uncomplicated documentation design. All measurements are quickly viewable in just a few clicks with graphic and tabular curve displayed. Test measurements and customer data can be stored on the app, with reports easily generated and dispatched to customers and colleagues direct from the App.

The Testo Smart app is free to download and free to use, and is always up to date thanks to continuous updates and extensions from Testo. Data exchange is also available with the Testo PC software DataControl.

Testo 552 Digital Vacuum Gauge Features

  • Backlist display – Beneficial in dark environments
  • Fold out hook suspension – Highly functional for attaching the meter to piplines etc
  • MiniDin Connector – Simple connection to the Testo 570 Digital Manifold
  • 50 Hour Battery Life
  • Detailed Display – Shows Evaporation temperature, ambient temperature and temperature differences
  • Highly accurate maintenance free pressure sensor
  • Optical alarm -  Useful for exceeded value limits

Traditionally analogue manifolds have been used to measure refrigeration systems. Naturally analogue meters offer a lower level of accuracy and are at times inconvenient to handle. With the Testo 552 being centred on digital technology you can measure with complete accuracy and complete peace of mind. Remove the need to interpret measurement results with a full digital read out on a large backlit display.

Another fantastic benefit for engineers undertaking evacuation on a system is that the Testo 552’s absolute pressure sensor never has to be serviced or replaced. Testo have ensured accurate measurements are not compromised and have also developed a system with 50 hours of life from just two conventional AA batteries. 

As with all the Testo range the 552 incorporates a robust construction designed for daily use and has been tested against water and dirt.

Ensure all future heat pump and refrigeration systems are correctly configured with the latest accurate technology available from the Testo 552 Digital Vacuum Gauge. 

Testo Part Number 0560 5522


Pirani Sensor Specifications

  • Meas. range vacuum: 0 to +26.66 mbar / 0 to 20,000 microns
  • Accuracy vacuum: ±10 micons + 10% of m.v. (100 to 1000 microns)
  • Vacuum resolution: 1 micron (0 to 1000 microns) / 10 microns (1000 to 2000 microns) / 100 microns (2000 to 5000 microns) / 500 microns (5000 to 10000 microns) / 5000 (10,000 to 20,000 microns)
  • Overload vacuum - absolute: 6 bar / 87 psi (relative: 5 bar / 72 psi)

General Specification Data

  • Storage temp. -20 to +50 °C
  • Oper. temp. -10 to +50 °C
  • Dimensions - 250 x 165 x 55 mm
  • Weight - Approx. 500 g
  • Protection class - IP42
  • Battery type - 2 AA batteries
  • Battery life -50 h (without backlight/Bluetooth)
  • Connection - 2 x 1/4" SAE (7/15" UNF); 1 x Mini - DIN (connection to testo 570)
  • Sensor - Pirani sensor
  • Parameter - mmHg, Torr, mbar, hPa, micron, inH20, inHg, Pa
  • Measuring rate - 0.5 s
  • Warranty - 2 years
  • Testo Smart Probes App compatibility: Requires iOS 8.3 or newer OR Android 4.3 or newer
  • Bluetooth compatibility: Bluetooth 4.0