Patent ID: 6146013
Filing Date: 2000-11-14
Classification: G01N

Abstract:
Apparatus for measuring the temperature and physical properties of a sample through the use of combined dynamic mechanical analysis and differential thermal analysis relative to a given reference temperature value comprising:(a) a furnace (112) containing a chamber (114) for receiving a sample (118) the temperature and physical properties of which is to be measured;(b) means (152) for detecting furnace temperature (T.sub.O);(c) means (154) for detecting temperature adjacent the sample position (T.sub.P), representing the sample temperature;(d) means for producing a furnace set point temperature T.sub.set (t));(e) means including a furnace temperature (148) responsive to said furnace temperature (T.sub.O) and to said furnace set point temperature (T.sub.set (t)) for controlling the temperature of said furnace to cause the temperature at the sample position (T.sub.R) to correspond generally with a desired reference set point temperature (T.sub.Rset (t));(f) means (147) for producing the difference between the sample temperature (T.sub.P) and the temperature at the sample position (T.sub.R), thereby to produce a single differential temperature analysis signal (SDTA); and(g) dynamic mechanical analyzing means for producing a signal (DMA) that is a function of a mechanical influence on the sample and the physical reaction of the sample thereon.