Laser Dilatometer Pico - series 0,3nm German Patent Nr.: DE 103 09 284 A1 2004.09.30 The push rod, which transmits expansion signal from the sample to the sensor, always covers a temperature gradient of up to 1600°C from end to end, sometimes even up to 2400°C. It is understandable that these high temperatures differences on these short dimensions makes it very important for good reproducible results, to insure very good thermal conditioning of the push rod / measuring system. If this expansion Normally available dilatometers of the series L75 which use the push rod principle of measurement are successfully available in the market since 1957. As a further total new development Linseis is now offering a Laser Dilatometer built after the MichelsonInterferometer principle. The original push rod dilatometer is based on a development made by Dr.Max Linseis in the early 1950th In those days the principle used . was the same as today, using a measu ring tube in which the sample is placed. The expansion signal of the sample is transmitted through a push rod onto a LVDT sensor (linear variable differential transformer). This sensor has theoretically an indefinite resolution. T ogether with other system components and the following evaluation electronics a maximum resolution of 10nm can be obtained. transmitting part will see a different thermal history from run to run, the reproducibility can not be best. In order to get best results, identical conditions from run to run are a must. For example the room temperature, the start temperature, the heat up speed and the used sample atmosphere etc. have all to be identical.

Laser Dilatometer Pico - series 0,3nm Optic Laser Detector Inductivefurnace Protectiontube Bench top with Lift for measuring system and Gas/Vacuum control A further increase of resolution, as well of the absolute accuracy is now also possible through the new development of the Linseis Laser Dilatometer of the Pico-series. As the name indicates already the resolution goes up to Picometers (0,3nm = 300 Picometer). That means resolutions can be obtained which are up to a factor 33,33 higher as the resolution that were possible up to date. On top the principle of interference measurement give the...

Laser Dilatometer Pico - series 0,3nm Technical specifications Laser Dilatometer Range: Reproduc ibility: Wave length: Ambient temperature: Sample holder: Fused silica Fused silica, evacuated Frequency range Generator: Temperature range: Thermoc ouple: Type-K (NiCr/Ni), welded to sample Acquisition rate: Power requirements: Power consumption Generator: