Calorimetric sensor measuring enthalpy of high temp. gas flows - has temp. sensors assigned to cooling medium guide tube coaxially arranged between inner and outer tubes

摘要

The calorimetric sensor provides a quick result from temp. changes of the gas to be measured. Its front end is open while its rear end is connected to a suction device. An inner tube contains a first temp. sensor. An outer tube is arranged coaxially to the inner tube and is sealingly joined to it at the forward end. This outer tube is connected to a cooling medium line. A guide tube is connected to another cooling medium line and is coaxially arranged between the inner and outer tubes. At least two further temp. sensors are installed in the flow path of the cooling medium in front of and behind the guide tube. At least one of these sensors (23,32) is placed at the front end of the guide tube (14) that is open in the ring space between the inner and outer tubes.