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The data sources of the field devices at a remote site are the sensors/transducers. The sensor/transducer output is converted to digital data through the RTU. In the case of radio telemetry, the output of the RTU is entered into a radio modem….
In a split-range control loop, the controller output is split and sent to two or more control valves. The splitter defines how each valve is sequenced as the controller output changes from 0 to 100%. In most split-range applications, the controller adjusts…
1. Batch Operating Systems This type of processing is done in programs with large computing time without the need for user interaction or participation. Some examples of such programs include payroll, forecasts, statistical analysis and programs with a large number of scientific…
Sinking and Sourcing: PLC has input and output lines through which it connects to a directing system. The inputs can be keys, switches, sensors, while the outputs are directed to different devices, from simple signalling lights to complex communication modules. This is…
The latching is used where the output must be activated even after the entry ceases. A simple example of such a situation is a motor, which is started by pressing a button switch. Although the switch contacts do not remain closed, it…
The basis of the hydrogen plant system involves two main equipment, the hydrogen generator and power supply. Hydrogen generator consists of mechanical equipment and piping systems supporting the electrolysis process. Control systems and instruments are located near the generator. The control…
Thermopiles: Thermopile is a device that converts thermal energy into an electrical signal. A thermopile is composed of several thermocouples connected usually in series or rarely in parallel. A thermopile is a series of thermocouples interconnected in series, each of which consists of…
What is a deaerator? And deaerators are used for: The deaerators are normally used in any chemical process industry or in power plants where the boiler is used for the production of steam from the boiler feed water. The heating deaeration process…
What are solenoid actuators? Selenoid Equipment used to convert electrical signals or electric currents into mechanical linear motion. Made of the movable coil and iron core. The pulling and pushing strength is determined by the number of turns on the coil. An…
DCS function: DCS works as a tool to control a loop system where one loop can happen some control process. Working as a replacement of separate manual and auto control tools to be a unity to be easier for maintenance and…
