VD83 Compact Vacuum Meter ● Pirani ● 100 to 5e-4 mbar

Extreme values (minimum and maximum pressure) recorded during the measurement process are stored directly and can be read out on the display when the measurement is complete.

Yes, our VD8 compact vacuum meters can be placed directly into a vacuum chamber. Via their data logger measurement values are stored and can be sent to a PC for evaluation, once the measurement is completed.

A battery-independent memory module is used to store measured values and device parameters, but the stored extreme values (min/max memory) are lost when the battery is changed.

Yes, an alkaline block battery is included in the scope of the initial delivery. The device can also be operated with a plug-in power supply unit (optionally available as an accessory).

We recommend 9 V alkaline batteries. Alternatively, 9 V lithium batteries or 9 V rechargeable batteries can be used. Zinc-carbon batteries are not suitable due to the high internal resistance.

The period between calibrations depends on the specific application. In particular, deposits and dirt in the sensor, but also use under extreme temperature conditions, can make readjustment necessary. For quality assurance, we recommend sending the devices in for calibration every one or two years. We offer a factory calibration (article no. ADJCERT) or a DAkkS calibration (article no. DKDCERT).

In principle, the devices can be installed in any position. You will achieve the most accurate measurement results if the flange of the device is horizontal, as the devices have been calibrated in this position. Mounting the sensor from below is not recommended, as condensation and dirt can collect in the measuring cell.

Using the integrated data logger, you can store up to 2000 measured values in the device and transfer them to the PC once the measurement is complete. Alternatively, the data can be sent to the PC and evaluated during the measurement (online measurement).

To optimally use the memory, especially for long-term measurements, the VD8 offers the function “Data logging at measurement change”. Measured values are only saved if the pressure changes, reducing the amount of insignificant data.

The VacuGraph® software is a helpful accessory for the optimal use of our vacuum meters. It is used for the communication between a PC and the vacuum meter. For example, you can transfer the measured values stored in the data logger to the PC and evaluate them or conveniently adjust device parameters such as the sampling rate in the software configuration board.