What is a current transmitter?
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I saw this item in the materials, but I’ve never come into contact with it.
Here is http://baike.baidu.com/view/1500843.html?wtp=tt
A current transmitter is a type of transmitter that takes the motor current value from the MCC as input and outputs a standard 4–20 mA DC signal; it is usually installed inside a panel.
High-current (current or voltage) converted to analog output
Analog 4–20 milliampere standard DC signal
A transmitter that converts the motor current value into a standard 4‑20mA DC signal; it is recommended to install it in the electrical control cabinet to avoid interference.
The excerpt is as follows: The current transducer can directly convert the AC current in the circuit being measured into a constant-current loop standard signal of DC 4–20 mA, which is output in linear proportion (converted to DC 1–5 V via a 250 Ω resistor or to DC 2–10 V via a 500 Ω resistor), and transmit it continuously to the receiving device (computer or display instrument). The current transmitter features high-level insulation between the primary and secondary sides, a two-wire output connection. The auxiliary operating voltage of +24V is shared with the output signal line of DC4–20mA. It offers high precision, compact size, low power consumption, wide frequency response, and strong interference resistance. It also incorporates 4 unique compensation mechanisms developed in China, as well as 6 comprehensive protection functions. The two-wire interface has strong resistance to induced lightning strikes, providing protection against lightning waves and surges. Especially suitable for intelligent monitoring systems of load currents in generators, motors, intelligent low-voltage distribution cabinets, air conditioners, fans, street lights, and other devices ；
Hehe, it can be regarded as a device that converts an electrical current signal (A) into a meter signal (4–20mA).
Request for help: To monitor motor current on DCS, should the current transmitter be provided by the electrical department or the instrumentation department?
This should be for materials related to the electrical engineering field! ~It makes no difference who of us mentions it. We don’t distinguish by major