Shunyuan Technology is a specialized and innovative enterprise in Shenzhen, with over 20 years of experience in the research and development of analog signal isolation, amplification, and transmission technology in the sensor and instrumentation industry. During this period, it has obtained 9 national inventions, 32 utility models, and 12 computer software copyrights in the industry. Since 2007, it has been recognized as a high-tech enterprise. The company insists on carrying out improvement and innovation work, continuously improving product quality, reducing production costs, expanding product application scope, and innovating and developing new products to adapt to the rapidly developing situation of electronic information technology and meet the needs of customer product research and development innovation and upgrading.

The HART transparent 4-20mA two-wire passive isolation distributor developed this time is a smart sensor module specifically designed for industrial instruments and meters with HART protocol transmission and control. The working principle is to supply power to the front-end two-wire intelligent device through the back-end feeding method, while receiving the two-wire 4-20mA current signal output from the intelligent device, and outputting the 4-20mA standard signal after isolation filtering. The module integrates a HART digital signal isolation transmission circuit and an analog 4-20mA current loop isolation distribution circuit. The bidirectional transmission of HART signals can support communication between on-site intelligent sensors and instrument equipment and the DCS distribution system in the control room, fully leveraging the dual advantages of digital and analog signals. This signal isolation distribution device with HART transparent transmission function is a high-performance signal processing equipment that combines the advantages of signal isolation distribution and HART communication technology. It can achieve isolated distribution of two-wire sensors, transmitters, instruments and meters in industrial sites, as well as reliable transmission and precise measurement control of signals. The ISO 4-20mA-FHT module is mainly used for the isolation and distribution of 4-20mA signals in industrial field intelligent sensors, as well as the transmission of HART signals. During operation, it can provide 16V~21VDC power distribution for front-end two-wire devices, facilitating signal measurement and remote transmission functions for some two-wire sensors. The module output terminal is designed for a two-wire power supply circuit (on-site explosion-proof function) with 24VDC and sampling resistor (load resistor) in series. It matches the analog input interface board (upper computer), PLC, DCS or other instrument and equipment commonly used in industrial sites. The internal integration process and new technology isolation measures enable the module to achieve 3KVDC insulation voltage and industrial grade wide temperature, humidity, and vibration requirements in harsh on-site environments. It has a wide range of applications in the fields of intelligent transmitters, industrial control intelligence, mining and medical equipment safety isolation barriers, industrial robots, chemical and nuclear power safety equipment.