Patent ID: 11914002
Assignee: CROUZET AUTOMATISMES
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 11:
12. A monitoring module for completing the electrical installation of claim 1, this monitoring module being capable of being positioned between the power supply terminals of the sensor and the first and second power supply cables, this monitoring module being capable of generating, on the measurement cable, the first predetermined fault value in response to the interruption of the first power supply cable, wherein the monitoring module comprises:
the first transistor comprising the first and the second power electrode and the control electrode, this first transistor being capable of switching, as the function of the control signal received on the control electrode thereof, between:
the open state, in which the power electrodes thereof are electrically isolated from each other; and
the closed state, in which the power electrodes thereof are electrically connected to each other; and
the first and the second power electrodes of the first transistor being electrically connected to the second power supply cable and to the measurement cable, respectively, so that, when the first transistor is in the closed state thereof, the first predetermined fault value is generated on the measurement cable, and the control electrode of the first transistor is connected to the first power supply cable, so that the loss of current on the first power supply cable, caused by the interruption thereof, automatically triggers the switching of the first transistor to the closed state thereof and so that, alternatively, the absence of interruption of the first power supply cable keeps the first transistor in the open state thereof; and

the first resistor connected in series with the first power supply cable; and
the second transistor comprising the first and the second power electrode and the control electrode;
the first power electrode and the control electrode of the second transistor being connected to the first power supply cable, each on the respective side of the first resistor, so as to automatically trigger the switching of the second transistor to the open state thereof in response to the interruption of the first power supply cable and to keep this second transistor in the closed state thereof in the absence of the interruption of the first power supply cable;

the control electrode of the first transistor being connected, on the one hand, to the second power electrode of the second transistor and, on the other hand, to the second power supply cable by means of the second resistor, so as to generate the control signal that triggers the switching of the first transistor to the closed state thereof only when the second transistor switches to the open state thereof.