Electrical safety monitoring circuit and system for measuring instruments and meters

The utility model discloses an electricity utilization safety monitoring circuit and system for measuring instruments and meters. The electricity utilization safety monitoring circuit comprises a shell provided with a fireproof layer and an explosion-proof layer, a first sensor module, a second sensor module, a signal conversion module, a control processor and a communication interface circuit. The first sensor module converts radiation energy received by the shell into a first analog electric signal, the second sensor module converts external and internal temperature values of the shell into a second analog electric signal and a third analog electric signal respectively, and the signal conversion module converts the first, second and third analog electric signals into digital electric signals. The control processor obtains a radiation energy value and a temperature value of the shell according to the digital electric signal, and when the values are larger than a preset value, the communication interface circ