| 摘要 |
A device for monitoring the electrolyte level in an accumulator battery combines in one protective housing (3), which can be plugged into a diagnosis opening by means of a sleeve-like projection on the base, a sensor electrode (not visible), which is fixedly surrounded by the sleeve and is immersed in the electrolyte, and an electronic circuit, which makes contact with the electrode and whose power supply is provided just by the cell voltage of the relevant cell, via connecting lines (9, 10) to the cell terminals, a voltage multiplier in the form of an integrated electronic module permitting a reliable measurement even in the case of cells which are largely discharged, by raising the input voltage to approximately 3 volts. As soon as the electrode is no longer immersed, when the electrolyte level falls below a permitted minimum, a switching transistor is switched on by the circuit which is now open with respect to the electrode and releases the current flow through a light-emitting diode (4) which, by its illumination, indicates that refilling is necessary. <IMAGE> |
