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The melt-pressure measuring chain from Kistler enables the precise measurement and recording of melt pressure when moulding components to tight dimensional tolerances.

The chain is made up of a factory-calibrated sensor, matched amplifier and cable designed to measure and record the melt pressure in injection-moulding machines and hot-runner systems, and is also suitable for measuring static pressure in polymer pumps.

The sensor allows the melt pressure and temperature signals to be integrated into the moulding machine’s control system.

The very stable, high-temperature-resistant, piezoresistive measuring element is protected by a robust diaphragm, allowing the sensor to be mounted directly in the flow of the material to eliminate the time lag inherent in indirect measuring systems.

A temperature signal derived from the piezorestive element is used by the amplifier to compensate for temperature variations.

The sensor displays high precision with repeatability errors of less than 0.1 per cent, linearity errors of less than 0.5 per cent and zero point change of less than 0.5 per cent.

Supplied as a complete measuring chain with a new digital amplifier that also has a melt-temperature output, the Type 4021A is available for pressures ranges up to 3,000 bar at a maximum operating temperature of 350C.

Kistler Instruments

Established in Winterthur (Switzerland) in 1957, the Kistler Group now has a worldwide presence with 23 group companies and 30 distributors ensuring prompt, local application support and short delivery times. With a staff of more than 1,000, the Kistler Group is one of the world’s leading providers of dynamic measuring instrumentation.

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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