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1. 发明申请

WO1992008956A1 APPARATUS FOR MEASURING PHYSICAL PROPERTIES OF FLUIDS 审中-公开
标题翻译：用于测量流体物理性质的装置
公开(公告)号：WO1992008956A1
公开(公告)日：1992-05-29
申请号：PCT/CH1991000227
申请日：1991-11-05
申请人： CABLERIES ET TREFILERIES DE COSSONAY S.A. , FAVRE, Pierre
发明人： CABLERIES ET TREFILERIES DE COSSONAY S.A.
IPC分类号： G01F01/68
CPC分类号： G01F25/0007 , G01F1/692 , G01F1/698 , G01F1/6983 , G01N33/0029 , G01P5/12
摘要： The apparatus is comprised of two sensors of the thermal type (11a, 11b) made of materials resisting without any alteration to a temperature of 650 DEG C. Probes (15a, 15b) are controlled by a microprocessor (16) to come periodically and momentarily in contact with said sensors in order to calculate (through microprocessor (16)) the thermal time constant of said sensors presenting a deposition layer of environmental pollutants. The microprocessor (16) compares the value of said time constant with an order value that commands the closure of a shunt switch (17) of a resistance (18) which, when short-circuited, determines a reinforced heating of the sensors to bring them to a temperature of incineration of organic materials originating from the pollution of the ambient medium and deposited on said sensors. Thus, the sensors are maintained in the cleanliness conditions of their surface, thereby providing for the accuracy of information supplied by said sensors outside cleaning periods.
摘要翻译：该装置由两种传感器构成，这些传感器由不受温度变化650℃的材料制成的材料制成。探针（15a，15b）由微处理器（16）控制，以定期和瞬时地进行与所述传感器接触以计算（通过微处理器（16））所述传感器的热时间常数，其呈现环境污染物的沉积层。微处理器（16）将所述时间常数的值与命令关闭电阻（18）的分流开关（17）的顺序值进行比较，该电阻当短路时确定传感器的加强加热以使它们达到源自环境介质污染并沉积在所述传感器上的有机材料的温度。因此，传感器保持在其表面的清洁度条件下，从而提供由清洁周期内的所述传感器提供的信息的准确性。

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