Busch Launches Vactest Vacuum Measurement Equipment

Busch Vacuum Solutions launches the new series of Vactest vacuum measurement equipment. A comprehensive portfolio of active vacuum gauges and controllers is designed to feature the latest advances in vacuum metrology. Robust construction, reliability and measurement accuracy are reportedly key features of these devices, making them suitable to monitor and control vacuum processes. State-of-the-art technologies allow for a wide measuring range from 1,600 to 5 · 10-10 mbar covering all vacuum levels with accuracy, according to the company. All sensors comply with international standards and regulations such as CE and RoHS.

With the Vactest vacuum metrology, Busch provides numerous sensor technologies to cover all decades of vacuum. They can essentially be divided into two main categories: direct and indirect pressure measurement. The direct measuring principle is independent of the process gas and is based on the pressure that the molecular flow exerts on a membrane. This method is mainly used for rough and medium vacuum processes. At a higher vacuum level, indirect measuring principles based on special properties of the process gas, such as thermal conductivity or ionization probability, are used. Unlike the direct measurement method, these principles depend on the type of process gas. For this reason, a specific correction factor must be applied for each process gas except air or nitrogen.