The DVR 2pro is a fully electronic, versatile vacuum gauge for the measuring range from atmospheric pressure to 1 mbar. All wetted parts are made from enhanced chemical resistant material which allows the use under very rough laboratory conditions. The high accuracy and the large graphical display from the DVR 2 have also been carried forward for the “pro” version. One of the main enhancements is the power supply with a normal 9 V Alkaline battery. The new battery slot at the back of the gauge allows for easy replacement of the battery. A wider range of connection parts provide a great range of connection flexibility for laboratory use.
| Power Supply | 9 V battery |
| Weight | 0.4 kg |
| Manufacturer | BRAND (BrandTech Scientific) |
| Items supplied | Vacuum gauge complete with integrated vacuum sensor, including battery 9 V alkali-manganese, support rod, connecting parts and manual. |
| Protection class IEC 60529 | IP 40 |
| Upper ambient temperature (operation) | 40 °C |
| Lower ambient temperature (operation) | 10 °C |
| Dimension B in mm | 115 mm |
| Lower ambient temperature (storage) | -10 °C |
| Upper ambient temperature (storage) | 60 °C |
| Dimension L in mm | 115 mm |
| Dimension H in mm | 90 mm |
| NRTL certification | No |
| Upper measuring limit in mbar/hPa | 1060 mbar |
| Upper measuring limit in torr | 795 torr |
| Lower measuring limit in mbar/hPa | 1 |
| Lower measuring limit in torr | 1 torr |
| Measurement principle | Ceramic diaphragm (alumina), capacitive, gas indep., absolute pressure |
| Accuracy of measurement | < +- 1 mbar/hPa/torr / +- 1 digit (after adjustment, constant temp.) mbar/hPa/torr |
| Vacuum sensor | Integr. |
| Temperature coefficient | < 0.15 mbar/hPa/0.11 torr /K mbar/hPa/torr /K |
| Vacum connection | Small flange KF DN 16, PTFE tubing connection 10/8 mm, hose nozzle DN 6/10 mm |
| Max. media temperature for continuous operation | 40 °C |
| Max. media temperature short term | 80 °C |
| Material of outer housing | Robust plastic housing with good chemical resistance |
| Protection class front side IEC 60529 | 6 |
| Automatic switch-off | User-selectable: 1-600 min (default 5 min) or continuous operation min |
| Measurement cycle | User-selectable: Automatic or 1 x per 3s, 1 x per 1s, 3 x per 1s |
| Typical battery lifetime | 4.000 h, stand-by: 30.000 h h |