DEVICE FOR WARNING OF CONTAINER COVER IS OPEN Russian patent published in 1994 - IPC

FIELD: electric communication. SUBSTANCE: device has on its extreme station I current stabilizer 2, comparison unit 3, alarm system 4, number locator 5. Each container has detector 8, isolation transformer 9, ancillary generator 10, alarm signal generator II, setting resistor 12, switch 13, delay member 14. Extreme station is connected to the first container through communication line, the rest of containers are connected with the first container through communication line in series. EFFECT: improved precision. 3 dwg