METHOD OF MANUFACTURING A COMBUSTIBLES SENSOR

摘要

- 13 - Case 4350 METHOD OF MANUFACTURING A COMBUSTIBLES SENSOR A method of manufacturing a differential thermocouple combustibles sensor is disclosed which makes the sensor relatively insensitive to sulfur poisoning. To accomplish this the catalytic thermocouple junction of a catalytic-non-catalytic junction pair is formed by coating it with a gel to increase the surface area and then with a chloroplatinic acid solution to make it catalytic. The catalytic junction is then treated with H2S to achieve a high catalyst surface area.