【Daily Question 20150822】

Explosive mixture Explosive mixture

Intrinsic safety instruments are characterized in that, whether under normal operating conditions or in the event of a fault, the sparks generated by the circuits and systems, as well as the temperatures reached, will not cause an explosion in explosive mixtures.

Intrinsic safety instruments are characterized by the fact that, whether in normal operation or in case of a fault, the sparks generated by their circuits and systems, as well as the temperatures reached, will not cause an explosion in explosive mixtures. The reasons are as follows: 1. The instrument circuit is constructed using new types of integrated circuit components, allowing it to operate at lower operating voltages and lower operating currents ； 2 Use safety barriers to separate the circuits in hazardous areas from those in non-hazardous areas, thereby limiting the energy that can be transmitted from non-hazardous areas to hazardous areas ； 3 The connection wires of the instruments should not exhibit excessive distributed inductance and distributed capacitance, in order to reduce the energy stored in the circuit

Ignite the explosive mixture

Ignite the explosive mixture! ! ! ! ! ! ! ! ! ! ! ! ! !

The characteristic of intrinsically safe instruments is that, whether in normal operation or in case of failure, the sparks generated by the circuits and systems, as well as the temperatures reached, will not cause an explosion in _____explosive mixtures_____.

Intrinsic safety instruments are characterized in that, whether under normal operating conditions or in the event of a fault, the sparks generated by the circuits and systems, as well as the temperatures reached, will not cause an explosion in __explosive mixtures__.

Mixed**------------------------------------------------

Intrinsically safe instruments are also known as spark-safe instruments. Its feature is that, whether in normal operation or in a fault condition, the sparks generated by the circuits and systems, as well as the temperatures reached, will not ignite (explosive mixtures). Its explosion protection is primarily achieved through the following measures: 1. The instrument circuit is constructed using new types of integrated circuit components, allowing it to operate at lower operating voltages and lower operating currents ； 2 Use safety barriers to separate the circuits in hazardous areas from those in non-hazardous areas, thereby limiting the energy that can be transmitted from non-hazardous areas to hazardous areas ； 3 The connection wires of the instruments shall not exhibit excessive distributed inductance and distributed capacitance, in order to reduce the energy stored in the circuit. The explosion-proof performance of these safety instruments is not achieved through external measures such as ventilation, inflation, oil filling, or flame isolation; rather, it is accomplished by the circuit itself, making them intrinsically safe. It can be used in all hazardous locations and with all explosive gas and vapor mixtures, and it can be repaired and adjusted while powered on. However, it cannot be used alone; it must form an intrinsically safe circuit together with intrinsically safe associated devices (safety barriers) and external wiring in order to exert its explosion-proof function.

This post was last edited by yuchenchf on 2015-9-24 19:53. Hehe, just passing by to take a look