What is the function of current sensor?

The current transformer can directly convert the AC current or DC current in the main loop into DC 4 ~ 20ma (DC2~ 10V ~ 5v through 250Ω resistor or DC2~ 10V through 500Ω resistor) standard signal output, and continuously transmit it to the receiving device (computer or display instrument).

The electric quantity transmitter is a measuring instrument that converts the measured electric quantity (AC voltage, current, active power, reactive power, active energy, reactive energy, frequency, phase, power factor, DC voltage, current, etc.). ) linear proportional DC current or voltage output (power pulse output).

Extended data:

Composition principle:

The transmitter works on the principle of negative feedback, which is mainly composed of measuring part, amplifier and feedback part.

The measuring part is used to detect the measured variable X and convert it into the input signal Zi (voltage, current, displacement, force or torque, etc.). ) can be accepted by the amplifier. The feedback part converts the output signal y of the transmitter into a feedback signal Zf and sends it back to the input terminal.

Zi is compared with the algebraic sum of the zeroing signal Zo and the feedback signal Zf, and the difference ε is sent to an amplifier for amplification and converted into a standard output signal Y. ..

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