| 摘要 |
<p>An apparatus for reducing the difference in electric potential that exists between two electrical-conducting objects 1,2 which are located at distance from each other in an electrical-conducting medium and which have ions and electrons that are created by different double layers on the exterior walls of the two objects 1, the apparatus comprising an equalizing cable 3, which can be connected in a detachable way, between the electrical-conducting objects 1, 2 and through which an equalizing current passes from one object 1 to the other 2, further comprising a current detector 5 which is in series with the equalizing cable 3, and which delivers a first output voltage which is dependent on the equalizing current; an instrument lead 9 which is detachably connected to the objects 1, in series with a voltage detector 8 which delivers a second output voltage which is dependent on the potential difference and a processing circuit 7 which delivers a third output voltage, which is dependent on the first and second output voltages, to a decision circuit 11, whereby the equalizing cable has predetermined resistance value.</p><p>Due to these features it is possible to detect a deviation of the nominal resistance value of the equalizing cable 3, so that it can be judged objectively and from a distance if, without creating a fire-hazardous situation, for example, a transport pipe can be connected between the two objects 1, 2, or if the connection of the equalizing cable 3 must be checked and if necessary improved upon</p> |
