What is an Emergency shutdown system? The emergency shut down system is a quick closing system that can be seen in many industrial plants. It can be activated manually or automatically in case of any emergencies, if it is activated it would close all the valves which need to be closed, and also it would …
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What is temperature? We can define temperature as the degree of hotness and coldness of an object or an environment. We can also determine the kinetic energy of a matter by the temperature measurement. It is a scalar quantity that would help us to determine the direction of heat flow between two objects. Temperature is …
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What is a thermistor? A thermistor is a device that would change its resistance with temperature, its name has derived from words such as a thermal resistor. This device is a thermally sensitive resistor that would change its resistance for a change in temperature. Basically, thermistors are semiconductors that behaves like a resistor. These devices …
Why calibration is important in an instrument? Calibration is done on instruments to improve their accuracy and precision we can also determine the accuracy of an instrument during this process. Instrument calibration would make the work environment safe and it would also be useful to create valid data for future reference. Instrument calibration is important …
What is a thermocouple? Thermocouples are devices that are used to do temperature measurements. One of the major advantages of this device is that it can be used for a wide range of temperature measurements, we can use this device to measure zero degrees to thousand degrees Celsius. Thermocouples are widely used in many industrial …
What is a Resistance temperature detector? The resistance temperature detector is basically a resistance thermometer, and it is used to measure the temperature. RTDs are replacing thermocouples due to their better accuracy and repeatability. The RTD works on the principle that the resistance of the RTD element would vary with the change in temperature. RTDs …
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What is a pressure regulator? The major purpose of a regulator is to match the flow of the medium which could be gas, steam, or liquid through the regulator according to the requirement of the medium for the system. It would keep the system pressure at the required pressure and thus would control the overpressure …
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What is a multimeter? A Multimeter can be described as a tool for electrical measurement, it is a combination of different kinds of electrical meters. We can use this device to do the measurement of voltage, current, resistance, etc. So we use a multimeter to measure AC/DC voltage, AC/DC current, and resistance. The multimeter has …
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What is override control? There could be several dangerous situations in an industrial process plant, because of the unpredictable process conditions which could destruct the operations of the process. During this condition, the normal process must be stopped and maintenance must be started to change the unacceptable situation. In order to do this, we can …
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What is Ratio Control? Ratio control can be defined as a type of feedforward control and it is widely used in the process industries. The purpose of the Ratio control is to maintain the ratio of the two-process variable at a specified value. Basically, this is a type of feed-forward control where two disturbances are …
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