Testo 525 is a digital pressure gauge that can measure differential pressure, relative pressure, vacuum or absolute pressure. It has a wide range of functions and high precision, making it suitable for a wide range of applications.
The Testo 525 is a digital pressure manometer for measuring differential, relative, vacuum or absolute pressure. This manual provides operating instructions, configuration options, battery replacement, calibration guidelines and safety warnings.
The document includes a multilingual table of contents, detailed technical data, measurement ranges, unit selection, data logging features and contact information for Testo AG. This manual is written in German.
| Measurement range | 0…2000 mbar |
|---|---|
| Accuracy (standard) | ±0.2 % FS + 1 digit |
| Temperature compensation range | 10 °C – 35 °C |
| Operating temperature | -5 °C – 50 °C |
| Storage temperature | -20 °C – 60 °C |
| Relative humidity range | 30 % – 95 % RH |
| Ingress protection | IP54 |
| Power supply | 9 V battery (IEC 6LR61) or rechargeable |
| Dimensions (W×H×D) | 152 × 83 × 34/29 mm |
| Weight (incl. battery) | 4 270 g |
| Memory capacity | max 964 measurements |
| Measurement rate (normal mode) | 2.5 – 5 measurements / s |
Open the battery compartment, insert a 9 V alkaline block battery (IEC 6LR61) or a rechargeable battery, making sure the polarity is correct.
The display shows the message “CHANGE BATTERY” when the battery voltage is too low.