Integrational modular device with multi-channel current calibrator and active current transmitter controlled by local and remote

摘要

The present invention is designed to enable remote and local control by configuring the current standard used as a standard input when calibrating a measuring device using a current signal as an input, that is, a current transmitter used for a calibration current standard and an instrumentation signal in multiple channels. The present invention for the purpose of the integrated module, the communication interface unit 10, the integrated module device for remotely interfacing the output control signal of the multi-channel current transmitter output control signal and the calibration current standard in accordance with the serial communication protocol The user can easily recognize the input unit 20 configured to control the multi-channel output locally while in charge of the interface function between the user and the user, by monitoring the current output value for each channel, the validity of the communication data, and incorrect wiring. Status display unit 30 to inform so that you can signal for each channel An output unit 40 capable of drawing the current and the calibration output current to the outside, a microprocessor unit 50 capable of calculating and processing the data signal transmission and reception according to the serial communication protocol, and calculating and processing a precise calibration output current. The signal converter 60 converts the data value of a remotely or locally commanded digital signal into a voltage value that is an analog signal for each channel. The output current can be used using a desired power source without being limited to various power sources used in an industrial site. In order to insulate the integrated module unit and the output unit so that the circuit can be reliably protected from electrical problems that may occur at the interface with the instruments or products in different power regions, the current is an analog signal 70 and an analog signal. Required for parameter setting values and serial communication protocols for converting data to 12-bit precision And in that a data storage section 80 for storing the control variable set values to its features.;Current Standard for Calibration, Active Current Transmitter