| 摘要 |
A liquid level indicator with a magnetic acting float which is movable along the exterior of a ribbed tube which extends substantially vertically in the liquid container. Within the tube is movable up and down a sensor which reacts magnetically on the float and thereby controls the direction of rotation of an electric motor which via a gear wheel and a longitudinally perforated metal band which is coated with insulating material and acts as one electric conductor, and the tube acts as the second electric conductor from the sensor via a gliding contact. |
