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VD81 - Digital Compact Vacuum Meter / Data LoggerAbsolute Pressure 1600 mbar to 1 mbar (=hPa), 1200 Torr to 1 Torr The versatile VD81 digital vacuum meter measures absolute pressure in the rough vacuum range. It is equipped with USB interface and can be used as data logger. The VD81 can be operated with battery or external power supply making it ideal for either portable or stationary applications. Benefits - Chemically resistant ceramic sensor with Viton® sealing
- Min/Max Memory: Storage and display of high and low values
- Up to 5000 h battery life
- Data logger functionality: Save up to 2000 measurements in the vacuum meter
- High repeatability, excellent long term stability
- Pressure units mbar, Torr, hPa
- Automatic switch off or continuous operation
- Vacuum connection by small flange, G1/4 female thread or screw in hose nozzle
Typical Applications - Check and setup of vacuum plants
- Operational control and documentation at vacuum plants and pumps
- Vacuum packaging machines
- Replacement of mercury manometers
- Chemical process engineering
- Vacuum furnaces
- Analysis instruments
| Measuring Principle | Piezo resistive, independent of gas type | | Materials In Contact With Vacuum | Stainless steel 1.4305, Al2O3 ceramic, Viton® | | Measurement Range | 1600 - 1 mbar (1200 - 1 Torr), max. overpressure 4 bar absolute | | Resolution | 1 mbar (Torr) | | Accuracy | < +-0.3% full scale (linearity, hysteresis, repeatability) | | Response Time | 20 ms | | Measuring Rate | 1.0 s (100 ms in data logger mode) | | Data Logging Rate | 0.1...999 s | | Operating Temperature | 5...+50 °C | | Storage Temperature | -20...+60 °C | | Power Supply | 9 V block battery (alternatively NiMh rechargeable battery or 15 VDC external (power supply)
| | Electrical Connection | Jack for external power supply | | Power Consumption | Approx. 2 mW
| | Operating Time | 9 V lithium battery: max. 5000 h
9 V Alkaline 6LR61 battery: max. 2500 h
9 V rechargeable battery 150 mA: max. 500 h
| | Sensor Connection | Sensor integrated in the instrument | | Vacuum Connection | DN 16 ISO-KF with G1/4 female thread or
hose nozzle (accessory VD81SW1)
| | Protection Class | IP40 | | Display | LCD 12 mm | | Weight | Approx. 200 g (battery included) |
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