发明名称 |
ELEKTRISKT SYSTEM FOR METNING AV INNEHALLET I EN BLANDNING SOM TRANSPORTERAS I EN PIPELINE |
摘要 |
1475593 Electro-physical measurement - density AKADEMIA GORNICZO-HUTNICZA IM STANISLAWA STASZICA 8 July 1974 [9 July 1973] 30131/74 Heading G1N The density of material conveyed in a pipe line is detected by a capacitor sensor 1. The capacitor controls the frequency of an oscillator 2a which is compared with a reference frequency from oscillator 2c and the differencefrequency-signal is shaped at 2f .. 2k and integrated to provide a D.C. indicator signal. The signal is TEMPERATURE COMPENSATED in stage 3 controlled by a temperature sensor 4 in the pipe-line. COMPENSATION for CONDUCTIVITY of the mixture is provided by a stage 2b which maintains constant the amplitude of the output of oscillator 2a which would otherwise vary with conductivity. |
申请公布号 |
SE411593(B) |
申请公布日期 |
1980.01.14 |
申请号 |
SE19740009005 |
申请日期 |
1974.07.09 |
申请人 |
* AKADEMIA GORNICZO-HUTNICZA IM STANISLAWA STASZICA |
发明人 |
A * DUNIKOWSKI;J * BEDNARCZYK;J * KESKA;T * PISARKIEWICZ;A * ZAMARSKI |
分类号 |
G01N27/06;G01N27/22;(IPC1-7):01N9/24;01N27/22 |
主分类号 |
G01N27/06 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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