The versatile VD85 vacuum meter with Piezo/Pirani combination sensor with data logger and USB interface reads pressure over 7 decades in the rough and fine vacuum range
| Measurement principles | Combination sensors, Piezo, Pirani | 
|---|---|
| Gas dependency | depending on gas type, independent of gas type (Piezo) | 
| Measuring range mbar | 1200 - 5e-4 mbar | 
| Measurement range Torr | 900 – 5e-4 Torr | 
| Max, Overpressure resistance | 2 bar abs. | 
| Accuracy | 1200 – 40 mbar: 0.3 % f.s. | 40 – 2e-3 mbar: 10 % f.r. | 
| Resolution | 1200 – 1000 mbar: 1 mbar, 1000 – 1 mbar: 0.1 mbar | 
| Measurement rate | 1.0 s | 
| Logging rate | 1 … 6000 s | 
| Materials in contact with vacuum | Stainless steel 1.4305, Tungsten, Nickel, glass, gold, FKM | 
| Operating temperature | +5…+50 °C | 
| Storage temperature | -20…+60 °C | 
| Voltage supply | 9 V battery or 12…15 VDC external | 
| Operating time | Li-battery | 
| Serial interface | Mini-USB, Type B, 5pin, female, Virtual Com Port protocol | 
| Electrical connection | Mini-jack 2.5 mm for plug-in power supply | 
| Article Number (choice of vacuum connection) | Stainl. steel small flange DN 16 ISO-KF | 
| Display | LCD 12 mm | 
| Dimensions | 25 × 16 × 9 cm | 
| Protection class | IP40 | 
| Weight (kg) | 0,230 | 
| Power consumption | Approx. 110 mW (clocked) | 
| Category | Data logger, Vacuum meter |