testo 552i Digital Vacuum Gauge

Wireless vacuum measurements via just one service port: The testo 552i app-controlled vacuum probe with Bluetooth enhances the Testo Smart Probes portfolio. It delivers reliable measurement results, is robust and easy to use – the vacuum probe provides optimum support for proper evacuation of refrigeration and air conditioning systems and heat pumps.

Identify vacuum quickly and easily by means of the graphical display in the App or on the digital manifold screen
Connects automatically via Bluetooth® to the testo Smart App and digital manifolds
Exceptionally compact and reliable thanks to the robust, easy-to-handle housing with IP 54 protection class
Easy installation at any service port thanks to the integrated 45° angle

Use the testo 552i vacuum probe with Bluetooth to measure vacuum wirelessly with speed, ease and precision via just one service port – with no loss of refrigerant. The testo Smart App supports you with numerous intelligent features – for example, you can see the vacuum by simply glancing at the graphic illustration in the app or on the manifold’s display. Thanks to its robust, convenient housing and proven measuring technology, the vacuum probe is compact and reliable when carrying out your vacuum measurements on refrigeration and air conditioning systems and heat pumps.

Applications: Refrigeration systems, air conditioning systems, heat pumps
- Evacuation: Graphic progression display of the measurement with an indication of the start and differential value

Technical Data: testo 552i - App-controlled wireless vacuum probe
General technical data:
Weight: 142 g
Dimensions: 150 x 32 x 31 mm (LxWxH)
Operating temperature: -10 to +50 °C
Protection class: IP54
System requirements: requires iOS 8.3 or newer; requires Android 4.3 or newer; requires mobile end device with Bluetooth 4.0
Product colour: black/orange
Auto-off: 10 min (when not connected via Bluetooth)
Battery type: 3 AAA micro batteries
Battery life: 39 h
Connection: 7/16“ UNF
Interface: Bluetooth® 4.2
Storage temperature: -20 to +50 °C
Absolute Pressure:
Measuring range: 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)
Overload: absolute: 6,0 bar / 87 psi (relative: 5,0 bar / 72 psi)