SunYuan  ISO 4-20mA-FHT's HART Transmissive 4-20mA 2-wire Passive Isolated Distributor is a smart sensor module specially designed for industrial instrumentation with HART protocol transmission and control. The working principle is to supply power to the front stage two-wire intelligent devices through the back stage feeder, and at the same time receive the two-wire 4~20mA current signals from the intelligent devices, and output the 4~20mA standard signals through the isolation and filtering. Module internal integration of HART digital signal isolation transmission circuit and analog 4-20mA current loop isolation distribution circuit, HART signal bi-directional transmission to support the field of intelligent sensors and instrumentation equipment and control room DCS centralized system of communication between the full play of digital and analog signals of the dual advantages. This signal isolation distributor with HART transmission function is a kind of high-performance signal processing equipment, which combines the advantages of signal isolation distribution and HART communication technology, and can realize the isolation and distribution of two-wire sensors, transmitters, instruments, etc. in the industrial field, as well as the reliable transmission of signals and accurate measurement and control.

     ISO 4-20mA-FHT module is mainly used for industrial field intelligent sensor 4-20mA signal isolation power distribution and HART signal transmission, the work can be for the front end of the two-wire device power distribution 16V ~ 21VDC, which facilitates the signal measurement of some two-wire sensors and remote transmission function. The output of the module is designed for a two-wire power supply loop (field explosion-proof function) with 24VDC and sampling resistor (load resistor) in series, which matches the analog input port of the analog input interface boards (host computer), PLCs, DCSs, or other instrumentation equipment commonly used in the industrial field at the present time. The internal integration process and new technology isolation measures enable the module to achieve 3KVDC insulation voltage and industrial grade wide temperature, humidity, vibration of the harsh environment requirements of the field, in the field of intelligent transmitters, industrial control intelligence, mining and medical equipment safety barrier, industrial robots, chemical and nuclear power safety equipment has a wide range of applications.

     ISO 4-20mA-FHT products are very easy to use, without external devices to achieve two-wire 4-20mA analog signal isolation transmission and HART digital signal bi-directional isolation through the transmission function. The module adopts unique electromagnetic isolation mode and high-efficiency back-end feeder technology, which effectively solves the problem of current signal isolation's dependence on the power supply, and realizes the precise isolation and transmission of the standard signal 4~20mA. The products have IC package PCB board welding module mode and DIN35 standard rail mounting mode, rail mounting mode can realize the signal one in one out, two in two out and multi-channel transmission transformation function, the user can configure the products according to the needs of the site.