Patent ID: 6382031
Filing Date: 2002-05-07
Classification: G01L

Abstract:
A thermal conduction manometer comprising:a carrier foil; at least one electrically heatable measuring resistor arranged as a layer on a surface of the carrier foil; an isolating layer arranged on said measuring resistor; a thermal contact layer arranged on an opposed surface of said carrier foil, the thermal contact layer containing a recess having an opening through which a medium to be measured can flow into the recess; an absorber layer arranged in the recess and in contact with the thermal contact layer; a heating resistor arranged on the isolating layer for heating said measuring resistor, the heating resistor being adapted to at least partially compensate for heat passing from the measuring resistor to the medium to be measured, and at least one reference resistor spaced from and electrically connected to the measuring resistor to form part of a Wheatstone bridge, wherein heat generated by the measuring resistor passes substantially perpendicularly from the measuring resistor to the medium through the carrier foil, the thermal contact layer and the absorber layer, and pressure is determined as a function of heat passing to the medium.