Boots – shoes – and leggings
Patent
1990-04-23
1992-07-21
Dixon, Joseph L.
Boots, shoes, and leggings
364558, 406 10, 7386104, G01F 100, G01F 2500, B65G 5108
Patent
active
051329174
ABSTRACT:
The suspension density of a pneumatically transported solid, such as coal, is obtained by using a combination of a radial gamma ray densitometer and a second, fast-response density meter. The combination is required to get the desired combination of accuracy and response time. The second measurement is used for its fast response time and may be used to control operating conditions of a gasifier. The slower, but more accurate, radial radiation measurement is used to recalibrate the second measurement approximately every 10 seconds and correct for drift thereof. The drift in the second measurement is sufficiently slow that high accuracy can be maintained by the recalibration technique.
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Dixon Joseph L.
Shell Oil Company
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