A Closed loop control system has a Sensor-Controller-Actuator. The Bimetal Thermostat has all the three in the Bimetal itself. The Sensor, the Relay Contact and the Intelligence. This is Process Control when implemented to control the temperature in a Bakery Oven. This leads us to Sensors-Transmitter-Controller-Outputs-Actuators. Where each is an independent electronic/electrical component of an entire Process Control system. The Process could be Temperature, Pressure, Speed, or Level. Industrial Automation encompasses many such Process Control Systems to form a Engineered System Solution for an Entire production line with different stages and process types. At the machine end, the control has [Read More ....]
Training Demo jig panel set that uses the DCS process management package, DeltaV of Emerson. Complete Distributed Process Control System Process Control : Educational Equipment Here you can see a scaled down version of the real thing, these are ways Paper, Oil and some Materials are processed in Big Factories. Study the control of processes like Level, Flow, Temperature, Pressure and the needed Actuators used to monitor and manage a stable multi-loop system. Process Automation is needed to ensure quality of the output and safety of plant and environment. The most important thing is to make it energy efficient.
Analog Mux for Data Acquisition Systems
Process Control
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Mar 172009
Here is a 4-20 mA In/Out Analog Mux with Cascade option. This is a simple circuit i designed to make a Automation System within a budget. This takes 4-20mA from many Transmitters and gives out just one 4-20 mA output. The Mux is done with a digital byte or word. This is a slow scanner as process is slow, that way many analog inputs can be multiplexed and sent into one analog input of a D/A. In near real time systems a faster mux could be used or mux totally avoided. This was made in some numbers, so the pcb [Read More ....]
Process Control Circuits for Automation
Process Control
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Feb 202009
The page Industrial Process Control Circuits has been updated. This was the PCB of the Transmitter, This would go into the SSR box. It worked pretty well, served the purpose. It was also cloned by others. Now designs are public. In those days, i would try to protect my designs, it was futile. The only edge an engineering company can have to protect its designs is quality, customer support, marketing clout and constant improvement. If you have a Capital-Reserve for cash-flow and dedicated R&D lab and team with very low Attrition; combined with an enthusiastic and adventurous Marketing Team. Then [Read More ....]
This is a Multi Zone Temperature Control panel used in Plastic Extrusion Moulding. We made many of these and it helped us learn cable management techniques. The panel is a standard way it was built and some of the merits were the selection of panel components and wiring expertise.
This was a Custom Built Product for Converting a 10-100 V Signal from a Motor Tacho to pulses, to indicate the distance moved by Conveyor belt with Job Material. The Digital Indicator would indicate the speed and the Mechanical Counter would Log Quantity of Materials Moved. Voltage to Frequency Converter ICL8038
