MAGNETIC INDICATOR TO PREVENT UNAUTHORIZED EXPOSURE METERS to distort their testimony

摘要

The invention relates to indicators of the magnetic field and can be used in devices accounting liquid, gas, electricity, are sensitive to an external magnet to prevent tampering them to distort the readings of meters.; Technical result: the indicator can reduce or eliminate the desire of the consumer unauthorized act on accounting unit by locking metering device or magnification rate cheat counter readings.; The claimed technical result is achieved due to the fact that the indicator magnet adapted to be placed into the metering device housing and comprising a drive responsive attraction or repulsion on the external magnetic field, characterized in that the indicator disc is mounted on the axle to rotate freely, and with the ability to return to its initial position, wherein the drive comprises at least one groove and a spring-loaded stop lever for locking in a groove disposed in the operating condition metering readily engraft fifth to the disc surface or end face of its circumference, and the stop lever is connected with a mechanism blocking metering device or mechanism incorporating accelerated rotation counter readings of the instrument.