| 摘要 |
<p>The probe has a sensor (22) arranged for forming an electrical element with a material i.e. concrete, where capacity of the electrical element is related to permittivity of the material. A measuring circuit (20) is connected to the sensor for measuring a quantity representing the capacity of the electrical element. The sensor comprises a cylinder (24) i.e. solid cylinder, that is made of electrically inert material i.e. PVC. A copper strip is adhered on a flexible band. A cable i.e. Universal serial bus (USB)type cable, is connected to a computer. Independent claims are also included for the following: (1) a method for measuring evolution of a material (2) a material evolution measuring installation, comprising an analog-digital converter.</p> |
