My major in the school of thermal and automation control professional, but in the first station to run our work is most in need of heat, electrical and other aspects of knowledge
This is for me a new challenge, but also the need for continuous learning to improve, so that their professional skills can be fully developed
So, I got some books about these areas, targeted to our system of learning, but also ask some of the old master and professionals, ask them to show up preaching
Through their own efforts and the help of colleagues, finally work pays off, my professional knowledge and professional skills have been greatly improved
Isolation module is through the analog signal, that is, continuous control signal 4-20mA, such as the valve opening, level control; and isolation relay is the s