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PROBE FOR MEASURING, AND/OR FOR EXERCISING A CONTROL IN DEPENDENCE UPON THE VALUE OF, A CHARACTERISTIC OF A MATERIAL, AND METHOD OF USING SAIDD PROBE
PROBE FOR MEASURING, AND/OR FOR EXERCISING A CONTROL IN DEPENDENCE UPON THE VALUE OF, A CHARACTERISTIC OF A MATERIAL, AND METHOD OF USING SAIDD PROBE
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机译:用于测量和/或行使与价值相关的控制,材料的特性以及使用所述探棒的方法的探棒
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摘要
A probe (10) for measuring a characteristic of fluid or solid material or materials and/or for exercising a control in dependence upon the value of said characteristic, comprises an electrically conductive probe member (11) which carries at least one electrically conductive antenna device (14) which is insulated from the probe member and is spaced from the latter by at least one gap (15) whose size is not more than half the maximum width or diameter of the respective antenna device (14); electrical means (16) which are arranged in operation to produce an electrical field (23) between the probe member (11) and the or each antenna device (14); and signal-producing means (17), responsive to the output of the electrical means (16), for producing a signal functionally related to the value of said characteristic. The antenna device may be annular. A guard electrode separated from the antenna device by insulation may be positioned on the opposite side of device (4) to probe member (11). IMAGE
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