Compact Vacuum Meter / Data Logger Absolute Pressure 1200 to 5 x 10-4 mbar VD85 digital vacuum meter reads pressure over 7 decades in the rough and fine vacuum range. Its sensor combination of piezo and Pirani guarantees high resolution and precision over the whole range. It is available with USB interface and can be used as data logger. The VD85 can be operated with either battery or external power supply making it ideal for portable or stationary applications. Typical Applications • Checking and setup of vacuum appliances • Wide measuring range due to combined piezo/Pirani sensor • Diagnosis and documentation of vacuum pumps • High precision and optimal resolution over the whole range • Excellent long term stability • Leak tests • Rugged sensor (piezo/Pirani) • Graphical evaluation of pump down diagrams • Continuous pressure display over the whole range • Modern teaching aid with PC interface • The Pirani sensor is active only below 200 mbar • Coating plants • Pressure units mbar, Torr, hPa • Min/Max memory: Storage and display of high and low values • Gas correction factors for correct pressure readings • Precise push button readjustment • USB interface • Easy configuration of the vacuum meter by VacuGraphTM software or directly at the instrument • Measuring rate of the data logger can be arbitrarily set by means of VacuGraphTM software or directly selected at the instrument • Optionally measurements are saved only on pressure change to reduce data volume • Online data transfer to PC via USB • Data logger functionality: Save up to 2000 measurements in the vacuum meter and push button data transfer to a PC; no PC connection is necessary during the measurement • VacuGraphTM software for saving and plotting measurements on PC Actual Pressure • Automatic switch off and continuous operation • User friendly operational concept

Technical Data Product Code _______________________________________________________________________________________ Measuring Principle Piezo resistive, independent of gas type Pirani, depending on gas type _______________________________________________________________________________________ Materials In Contact With Vacuum Stainless steel 1.4307, nickel, gold, tungsten, glass, FKM _______________________________________________________________________________________ Measurement Range 1200 - 5 x 10-4 mbar (900 - 5 x 10-4 Torr), max. overpressure 2 bar absolute _______________________________________________________________________________________...