Key facts
- Brand
- testo
- Model
- 552
- Industry
- Industrial
- Documents
- 3
- Languages
- PT · ZH · DE
- Last added
- 2026-11-04
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Testo 552 Bluetooth Digital Vacuum Gauge User Manual
The Testo 552 is a digital vacuum gauge designed to precisely measure small pressure changes within a vacuum. It allows users to monitor the evacuation process of refrigeration systems and heat pumps in real-time during commissioning. The device features a color display, multiple connection options including Bluetooth connectivity for data export, and can function as a sensor for the Testo 570 manifold gauge. This manual is written in Chinese.
Read onlineTesto 552 specifications
| Measurement Range (Vacuum) | 0 … +26.66 mbar / 0 … 20 000 microns |
|---|---|
| Accuracy (Vacuum) | ±1 digit (at +22 °C) ± 10 microns + 10 % of v.m. |
| Resolution (Vacuum) | 1 micron (0 … 1 000 microns) |
| Absolute Overpressure | 6 bar / 87 psi |
| Relative Overpressure | 5 bar / 72 psi |
| Operating Temperature | -10 … +50 °C |
| Protection Class | IP 42 |
| Battery Type | 2 AA batteries |
| Autonomy | 50 h (without Bluetooth / without illumination) |
| Connection | 2 x 7/16" UNF, 1 x Mini-Din |
| Warranty | 2 years |
Source: testo 552 Digital Vacuum Gauge with Bluetooth Product Leaflet
All Testo 552 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What application is compatible with the testo 552?
The testo 552 connects to the testo Smart Probes application installed on a smartphone or tablet.
From: testo 552 Digital Vacuum Gauge with Bluetooth Product Leaflet
Can measurement data be sent via email?
Yes, measured results can be documented in the application and sent directly via email.
From: testo 552 Digital Vacuum Gauge with Bluetooth Product Leaflet
What is the vacuum range of the Testo 552?
The instrument measures a vacuum range from 0 to 26.66 mbar or 0 to 20,000 microns.
How long does the battery last?
The battery life is approximately 50 hours when the backlight and Bluetooth are turned off.
What is the Testo 552 used for?
It is a digital vacuum gauge used to monitor the evacuation of refrigeration systems and heat pumps.
How should I clean the Testo 552?
Wipe the housing with a damp cloth using mild household cleaning agents or soapy water, but do not clean the sensor.