Friday, September 15, 2006

Injection moulding temperature sensor is precise

Temperature sensors provide accurate and fast reaction temperature measurement during the cooling phase of the injection moulding processes.

The new temperature sensors from Kistler Instruments have been developed to provide accurate temperature measurement during the cooling phase of the injection moulding processes. With the edges of the moulding often cooling down at a rate of 100 deg C/sec, fast reaction temperature measurement is essential. Kistler temperature sensors have both thermocouple elements separately fed to the sensor front where they are welded together to create a Type K thermocouple (Ni:CrN) positioned directly at the tip to measure the moulding temperature.

Even very small changes in the contact temperature due to process variations, such as changes in the melt temperature, can be monitored precisely.

Kistler temperature sensors have front diameters corresponding to the relevant pressure sensor types and are compatible with standard cavity pressure sensors.

The same temperature measurement technique is used for the combination pressure/temperature sensor Type 6290A which has a front diameter of 4mm.

Temperature sensors, used in combination with cavity pressure sensors, allow both injection phase and cooling phase of the moulding process to be monitored accurately.

* About Kistler Instruments - stablished 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.

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.