Barrier Terminal Block to achieve safe , reliable and efficient connectivity , especially in high current, high voltage environment used widely , the following transmitter isolated applications are described .

With the development of technology, the design of the terminal fence increasingly compact , miniaturized purpose is less space. Of course, it should allow the user to install dense , dense installation of the heat problem exists , it must reduce internal power dissipation , so the value of internal power dissipation in the selection should also pay attention .
 
Appeared on the market a lot of CPU- core isolation barrier type terminal with field programmable and communication functions , a high flexibility in terms of the customer to reduce inventory levels, reduce the backlog of funds to the core of the CPU isolated terminal will become the mainstream in this area .
 
For transmitter isolation there is another way , but as one of the sensor and transmitter must be placed at the site designated locations at this time the general placement of the barrier type terminal in the central control room cabinet , the cabinet by the isolator barrier Terminal Block for field transmitters and distribution power to decide which one to use based on the PLC interface conditions .

Site commissioning may appear Barrier Terminal Block instrumentation and PLC interfaces do not match , the sending device for the four -wire transmitter output 4 to 20mA, 4 to 20mA and the receiver interface for wire loop power supply, the power supply will result if the direct connection conflict. The solution is the use of isolation barrier type terminal will be the scene of the 4 ~ 20mA receive and isolation , install a dedicated circuit loop powered two-wire interface mode to match the PLC in an isolated part of the internal output terminal .