How to

How sulfur Analyzer works

Principle of operation:- Sulfur Analyzer is based on the principle that SO2 molecules absorb UV light and become excited at one wavelength, then decay to a lower energy state emitting UV light at a different wavelength. Specifically, The sample inlet bulkhead draws the sample into the analyzer. The sample is mixed with air and passes …

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How Infra Red(IR) Gas analyzer Work

Infra red gas analyzer work :- An infra red gas analyzer measures trace gases by determining the absorption of an emitted infrared light source through a certain air sample. Trace gases found in the Earth’s atmosphere get excited under specific wavelengths found in the infrared range. The concept behind the technology can be understood as …

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Fundamentals of 4-20 mA Current Loops

Fundamental of 4-20 mA Current Loops In process control, there are different types of infinite process inputs. Thermocouples and RTDs provide direct temperature reading while digital signals such as Modbus   provide exacting control over process variables and display. Analog signals, where information about the process is transmitted via varying amounts of voltage or current, are …

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How to choose zener diode barriers?

How to choose zener diode barriers? Zener diode barriers are mainly used in hazardous areas in the industry. Selection of zener diode barriers is as follows:- Zener barriers; Galvanically Isolated Barriers (or Galvanic isolators). Intrinsic safety is the simplest and most cost-effective approach to ensure the safety of Hazardous Areas, industrial environments where a risk of explosion exists due to the …

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How to Measure Conductivity?

Conductivity measurement is an extremely widespread and useful method, especially for quality control purposes so it is important to know How to measure conductivity? What is conductivity? Conductivity is the ability of a solution, a metal or a gas – in brief all materials – to pass an electric current. In solutions the current is carried …

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How to control boiler drum level

Drum Level Control Systems are used extensively throughout the process industries and the Utilities to control the level of boiling water contained in boiler drums on process plant and help provide a constant supply of steam. If the level becomes too low then its level control very critical. In the process industries, boiling water to …

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