-
公开(公告)号：US3810009A
公开(公告)日：1974-05-07
申请号：US24604472
申请日：1972-04-20
摘要： An apparatus and method for measuring material buildup or fouling on a test specimen in which at least a portion of a temperature sensitive voltage output means is located proximate to a test specimen. The extent of fouling is determined by the change in a detected current or voltage signal resulting from the change in the heat transfer coefficient of the test specimen. The temperature sensitive voltage output means is at the same temperature as the temperature of the medium in which the test specimen resides and adjusts either a detected current or voltage signal to negate the effects of varying temperature of the medium on the detected signal.
摘要翻译： 一种用于测量试样上的材料积聚或结垢的装置和方法，其中至少一部分温度敏感电压输出装置位于测试样本附近。 污垢的程度由测试样本的传热系数的变化引起的检测到的电流或电压信号的变化决定。 温度敏感电压输出装置处于与测试样品所在的介质的温度相同的温度，并且调节检测到的电流或电压信号，以消除介质在检测信号上温度变化的影响。
-
2.发明授权Transducer for converting selected environmental parameter differentials to frequency differentials 失效用于将选定的环境参数转换为频率差分的传感器
公开(公告)号：US3715657A
公开(公告)日：1973-02-06
申请号：US3715657D
申请日：1970-12-28
发明人： SAMPSON R
CPC分类号： G01N27/122
摘要： To form a transducer, two uniformly d.c. biased signal detector means are connected in parallel. Each of these signal detector means includes a variable resistor that controls the output frequency of that signal detector means. The variable resistors are located in environments differing only in a parameter for which differential measurement is desired. Such parameters include temperature, thermal absorption, and other variables that affect electrical current flow in the resistors. A non-uniform change in the variable resistors changes the frequency differential existing between the two signal detector means.
-
搜索结果
2 条记录 (耗时 0.012 秒)
