Method of manufacturing a combustibles sensor
First Claim
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1. A method of manufacturing a combustibles sensor which is relatively insensitive to sulfur poisoning comprising the steps of:
- providing a first temperature measurement device which has a temperature varying electrical property;
coating said temperature measurement device with a gel to form a high surface area substrate with increased surface area over said temperature measurement device;
coating said gel high surface area substrate with a catalytic material; and
treating said catalytic material coating with H2 S to achieve a high surface area of the catalytic material.
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Abstract
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 H2 S to achieve a high catalyst surface area.
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Citations
10 Claims
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1. A method of manufacturing a combustibles sensor which is relatively insensitive to sulfur poisoning comprising the steps of:
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providing a first temperature measurement device which has a temperature varying electrical property; coating said temperature measurement device with a gel to form a high surface area substrate with increased surface area over said temperature measurement device; coating said gel high surface area substrate with a catalytic material; and treating said catalytic material coating with H2 S to achieve a high surface area of the catalytic material. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification