Kistler Instruments Ltd. - PRODUCT NEWS
KISTLER INCREASES CRYSTAL GROWTH CAPACITY BY 50%.
To meet the demand for its piezoelectric sensors, Kistler (www.kistler.com) has commissioned a new crystal growing facility; the third since it began producing the artificially grown calcium gallogermanate crystal ten years ago. Known as PiezoStar®, the crystals have superior performance characteristics to natural quartz and are used to produce high precision sensors for pressure, force, torque and acceleration.
In 1880, French physicists, Pierre and Jacques Curie, discovered that natural quartz would produce an electric charge when subjected to mechanical stress but this property was not used widely until 1950 when Walter P Kistler invented the charge amplifier that made industrial applications possible. Variations in the characteristics of naturally occurring quartz limited its suitability for accurate measurements and it was not until Kistler began growing synthetic crystals in 1958 that high precision piezoelectric sensors became available for practical applications.
Kistler uses the Czochralsky process, which involves a number of materials being deposited onto a seed crystal pulled slowly out of a melt to extract a single crystal bar. PiezoStar® single crystal bars are generally 1,5 to 2 kg in weight, 150 mm long and 60 mm in diameter. The crystals are then sliced in appropriate directions to produce pressure and shear sensitive piezoelectric elements to form the heart of sensors measuring pressure, force, torque and acceleration.
Kistler PiezoStar® sensors are used in a wide range of applications requiring accuracy and reliability, especially in difficult, high temperature environments, including monitoring cylinder pressure in internal combustion engines and mould cavity pressure in plastics injection moulding.
Kistler Instruments Limited
Established in Wintherthur (Switzerland) in 1957, Kistler is represented in over 50 countries and has subsidiaries in Germany, France, Italy, UK, Japan, USA, China, Korea and Singapore. With a staff of more than 800, the Kistler Group is one of the world's leading providers of dynamic measuring instrumentation. The Kistler Group achieved turnover of 160 million Swiss Francs in the 2005 financial year.
Kistler's core competence is the development, production and use of sensors for measuring pressure, force and acceleration. Kistler's know-how and electronic systems can be used to prepare measuring signals for use in analyzing physical processes, controlling and optimizing industrial processes, improving product quality in manufacturing and improving performance in sports and rehabilitation.
Kistler offers a comprehensive range of sensors and systems for engine development, automotive engineering, plastics and metal processing, installation technology and biomechanics.
Heavy investment in research and development, 15% of staff worldwide are engaged in research and development, has generated a number of innovations using piezoelectric, piezoresistive and capacitive techniques to provide solutions to numerous force, pressure and acceleration measuring problems. These innovations include the world's first commercial quartz sensor, two-wire constant current technology to integrate sensors with microelectronic circuitry, high-temperature pressure sensors for use up to 400 Deg C and three-component force measuring sensors.
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