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Temperature, pressure, flow, and level are the four most common process variables. Similar to temperature, pressure is another key process variable because pressure provides a critical condition for boiling, chemical reaction, distillation, extrusion, vacuuming, and air conditioning. Poor pressure control can cause major safety, quality, and productivity problems. Overly high pressure inside a sealed vessel can cause an explosion. Therefore, it is highly desirable to keep pressure in good control and maintained within its safety limits.
Siemens RWF40 Temperature/Pressure Controller The RWF40 single loop temperature/pressure control accepts a variety of input signals. The floating control option eliminates the need for electronics in control motors, reducing overall component and installation costs. Product features: Three analog and two binary inputs. "Auto Tune" PID output control. Optional MODBUS interface. Dual set point and set point limits. Three-level access/locking feature. Auto/Manual control feature
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