| 摘要 |
FIELD: measuring equipment, liquid level measuring unit is used for different liquids level measurement, for example, water or oil products. SUBSTANCE: aim is to increase accuracy of measurements. Liquid level measuring unit has measuring capacitor made in the form of located one near another plate type electrodes ( made as printed boards), to one of which generator is connected and another electrode is connected to input of amplifier, output of which is connected to indicator. New thing in the unit is, that second electrode is made of successively shifted along electrode members insulated from each other and connected to input of amplifier through resistor voltage dividers and diodes. The unit is also distinguished for the fact, that second electrode members width is inversely proportional to factor of amplifier amplification for corresponding to the given member level of output signal. In apparatus electrodes are fixed in respect to each other by rings, that are embracing both electrodes, and dielectric bridges between electrodes, that are pressing electrodes to inner surfaces of rings. In the case electronic unit with generator and amplifier is located on printed board fixed on printed board of one of electrodes. As a version, electrodes are located at dihedral angle to each other. EFFECT: increased accuracy of measurements. |
