Process flow chart with control points: The designed process program is expressed in the process flow chart with control points, all the equipment required for the process is drawn, and the direction of logistics and the control parameter values of the main control points are marked. Process flow diagram with control points is a kind of process flow diagram that represents all process equipment, material pipelines, valves, equipment accessories, as well as legends and symbols of process and automatic control instruments. Also called process control flow chart. It is a necessary accessory to the design documents. With control points of the basic requirements of the process flow diagram: 1. indicates the production process of all process equipment, including equipment legend, bit number and name. 2. indicates the production process of all process materials and energy-carrying media name, technical specifications and flow direction. 3. indicates all the material piping and a variety of auxiliary piping (eg, water, chilled brine, steam, compressed air, and vacuum piping) code, material, diameter and insulation. 4. indicates the material piping and various auxiliary piping (such as water, refrigerated brine, steam, compressed air and vacuum piping). 5. indicates that all the material piping and piping, including the process control diagram. 6. indicates the process control diagram. 4. Show all the process valves in the production process, as well as flame arresters, sight glass, pipeline filters, water evacuators and other accessories, but do not need to draw flanges, elbows, tees and other general pipe fittings. 5. Show all the instruments in the production process and control programs, including instrumentation, control parameters, functions, bit number, as well as the detection point and the control loop. 6. Show all the production process and control programs, including the control parameters, functions, bit number, as well as the detection point and control loop. 7. Show all the production process and control program. 8.
With control point flowchart, in the equipment chart side of the lead in the engineering design symbols include graphic symbols, letter code and digital number. In the control room display control point graphic symbols, the first letter indicates the initial variable, such as temperature, pressure, etc., and the subsequent letters indicate the function, such as the role of regulating control, measurement, and so on.