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Principle of gas density measurement: The relationship between temperature, pressure, and volume of a gas is given by: PV = nZRT where P is the absolute pressure, V is the volume, and n is the number of moles. Z is the compressibility factor, R0 is the universal gas constant, and T is the absolute temperature. …
What is pH? pH is a unit of measurement that describes the degree of acidity or alkali content of a solution. The pH unit is measured in terms of 0 to 14. The pH is formed from quantitative information expressed by the level of acidity or base associated with the activity of hydrogen ions. If …
What is photovoltaic detectors? The photodetectors generate a voltage that is proportional to the incident EM radiation intensity. These devices are called photovoltaic cells due to their voltage generating characteristics. Actually, they convert EM energy into electrical energy. Applications are found both in EM radiation detectors and in energy sources that convert solar radiation into …
Rotameter type viscometers are used both industrially and in the pilot plant to measure the viscosity of the process fluids and continuously indicate, record or control the process. This type of viscometer is used in a closed flow system Viscometer has been successfully used to maximize combustion efficiency by controlling the viscosity of fuel oils …
Micro-Electro-Mechanical Systems, or MEMS, are technologies that are in the most common form that can be defined as miniature mechanical and electro-mechanical elements (i.e. devices and structures) made using microfabrication techniques. the types of MEMS devices can vary from relatively simple structures having no moving elements, electromechanical systems to very complex with multiple moving elements …
Vibrating Element Densitometers Principle: If a body containing or surrounded by a fluid is set to resonance at its natural frequency, then the frequency of oscillation of the body will vary as the fluid properties and conditions change. The natural frequency is directly proportional to the stiffness of the body and inversely proportional to the …
Density Measurement – Vibrating Element Densitometers Read More »
The turbidity of fluid is measured on the basis of reflection. In the absence of reflection losses, when a weak beam of light passes through a dielectric sample, the two processes most responsible for reducing the intensity of the transmitted beam are absorption and scattering. The reduction in transmitted light intensity due to scattering is called …
Oxygen Measurement: Oxygen measurement is important to know the correct air flow required for complete combustion. The direct measurement of O2 is a relatively new quantity and has only been incorporated into the combustion controls. With multiple O2 instruments on one boiler, some control philosophies use the average of all sensors for the control point. …
pH is the measure of the hydrogen ion concentration in a solution. It describes the degree of acidity or alkalinity (basicity) of a solution. pH measurement is used most often industrially with, but not limited to, aqueous (water-based) applications. The units of measure scale in most common applications ranges from 0 to 14 pH. 0 pH …
An infrared gas analyzer is used to measure the quantity of various gas. The amount of gas is determined by amount of a particular frequency of light absorbed by the gas when the light is passed through the gas. Different molecules in the air absorb different frequencies of light, measuring the absorbed frequency clearly gives …
Infrared Gas analyzer & it’s advantages & disadvantages Read More »