Product news

A novel technology platform for flush-mounted high-pressure sensors was developed for applications above 70 MPa. In contrast to the thin-film-on-steel technology commonly used in this pressure range, the new approach enables a flush-mounted sensor with a strict separation between the media-exposed side and the electrical side. This makes the technology particularly suitable for demanding applications with high pressure, hygiene, and temperature requirements. At the core of the development are piezoresistive silicon strain gauges with a high gauge factor, which are bonded to the media-isolated side of a metallic pressure diaphragm using glass-frit bonding. This process delivers excellent performance in terms of stability, measurement accuracy, and temperature behavior. The sensor architecture is oil-free, robust, and can be implemented using various metallic materials, especially stainless steel. The media-facing front surface is very small, measuring less than 5 mm, and designed to be flush. In addition to operation at temperatures up to 200 °C, the technology also offers potential for very low temperatures, including storage capability down to 20 Kelvin, which is particularly relevant for H2 applications. The sensor offers particular advantages in hygiene-sensitive sectors such as the food and pharmaceutical industries, as the flush-mounted design avoids complex geometries and undercuts. Other promising application fields include ultra-high-pressure water jet systems, hydraulics, mechanical engineering, metrology, and process control.