Abstract: A capacitive diaphragm gauge (CDG) is positioned in a pressure sensing section of a pressure measuring unit. The CDG is heated to maintain the CDG at a temperature selected to reduce contamination build-up on the diaphragm of the CDG. The pressure sensing section is connected to a first mounting interface of a thermal barrier. A second mounting interface of the thermal barrier is connected to an electronics section. The thermal barrier includes a plurality of struts that mechanically interconnect the two mounting interfaces. The struts have sizes selected to be sufficiently large to cantilever the electronics section from the sensing section. The sizes of the struts are selected to be sufficiently small to reduce the heat transfer from the first mounting interface to the second mounting interface to maintain the second mounting interface below a selected maximum temperature. The struts reduce heat transfer without reducing structural integrity.

Abstract: A capacitive diaphragm gauge (CDG) is positioned in a pressure sensing section of a pressure measuring unit. The CDG is heated to maintain the CDG at a temperature selected to reduce contamination build-up on the diaphragm of the CDG. The pressure sensing section is connected to a first mounting interface of a thermal barrier. A second mounting interface of the thermal barrier is connected to an electronics section. The thermal barrier includes a plurality of struts that mechanically interconnect the first mounting interface to the second mounting interface. The struts have sizes selected to be sufficiently large to cantilever the electronics section from the sensing section. The sizes of the struts are selected to be sufficiently small to reduce the heat transfer from the first mounting interface to the second mounting interface to maintain the second mounting interface below a selected maximum temperature.