Many users think that the role of the explosion-proof junction box is wiring, but there is no other purpose. In fact, its use is very wide, and it can be used for various purposes depending on the internal installed electrical appliances. Such as the built-in AC contactor can control the motor, built-in universal electronic counter can play a significant role and so on. Share the case of the built-in electronic counter today.
Usually, Zhejiang Fuchuang can install universal electronic counters according to the needs of users. It is a digital measuring instrument that uses transistorized or integrated digital circuits. The measurement results are shown in figures. It has many test functions and is a versatile, versatile instrument. It can measure the frequency, period, pulse width of a sine or pulse signal, the time interval between two signals, the number of accumulated input signals, timing, and so on. Low-speed counters are generally used in electrical measurement. The maximum counting frequency is about 10 MHz. Regardless of the type of counter, we can install it inside the explosion-proof junction box and design the cabinet according to different circuit sizes.
Inside the explosion-proof enclosure, our electronic counters also function as input channels, technology and display units, time base units, and control units. Input channels include A, B two input channels. Some counters also have a C channel that can directly measure the time interval between two signals. Each input channel consists of an input jack, amplifier, and shaping circuit. The function of the channel is to amplify and reshape the measured signal, such as input sine wave and pulse wave, to make it a rectangular pulse of the frequency and cycle that is consistent with the measured signal. On the panel of the explosion-proof junction box, we reserve an observation window for the display of the count to facilitate the user to observe on the spot. The counter panel includes a decimal counter, registers, a decoder, and a digital display. Their role is: the count pulse through the main door and sent to the decimal counter, the cumulative count; remember the number of count pulses sent register temporarily; the main door is closed, the register through the decoder, so that the display shows the cumulative Count the number of pulses. The time base unit includes a crystal oscillator, a frequency divider, a frequency multiplier, and a time base selection circuit. The quartz crystal oscillator produces a very accurate and stable frequency signal, which is then divided by frequency or frequency, as a time reference. The control unit includes a gated bistable circuit, a main gate, and the like. The main door is the gate, which has two inputs and one output. The gated bistable circuit outputs an open signal, a close signal, and an input to the main gate. The main door is opened by the signal of the door open, allowing the counting pulse of the other input to pass and then counting. When the gated signal of gating bistable arrives, the main door closes and a measurement ends
Usually, Zhejiang Fuchuang can install universal electronic counters according to the needs of users. It is a digital measuring instrument that uses transistorized or integrated digital circuits. The measurement results are shown in figures. It has many test functions and is a versatile, versatile instrument. It can measure the frequency, period, pulse width of a sine or pulse signal, the time interval between two signals, the number of accumulated input signals, timing, and so on. Low-speed counters are generally used in electrical measurement. The maximum counting frequency is about 10 MHz. Regardless of the type of counter, we can install it inside the explosion-proof junction box and design the cabinet according to different circuit sizes.
Inside the explosion-proof enclosure, our electronic counters also function as input channels, technology and display units, time base units, and control units. Input channels include A, B two input channels. Some counters also have a C channel that can directly measure the time interval between two signals. Each input channel consists of an input jack, amplifier, and shaping circuit. The function of the channel is to amplify and reshape the measured signal, such as input sine wave and pulse wave, to make it a rectangular pulse of the frequency and cycle that is consistent with the measured signal. On the panel of the explosion-proof junction box, we reserve an observation window for the display of the count to facilitate the user to observe on the spot. The counter panel includes a decimal counter, registers, a decoder, and a digital display. Their role is: the count pulse through the main door and sent to the decimal counter, the cumulative count; remember the number of count pulses sent register temporarily; the main door is closed, the register through the decoder, so that the display shows the cumulative Count the number of pulses. The time base unit includes a crystal oscillator, a frequency divider, a frequency multiplier, and a time base selection circuit. The quartz crystal oscillator produces a very accurate and stable frequency signal, which is then divided by frequency or frequency, as a time reference. The control unit includes a gated bistable circuit, a main gate, and the like. The main door is the gate, which has two inputs and one output. The gated bistable circuit outputs an open signal, a close signal, and an input to the main gate. The main door is opened by the signal of the door open, allowing the counting pulse of the other input to pass and then counting. When the gated signal of gating bistable arrives, the main door closes and a measurement ends
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