What is Hartridge smoke meter?
Hartridge smoke meter: A light source and photo-electric cell mounted facing each other on swinging arms. Movement of the change-over knob alters their position from 0-100, indicating the light absorbed by the smoke in hartridge units.
What is the unit for measuring smoke?
A number of methods have been developed that allow the conversion of opacity or smoke number measurements into PM mass units—soot density [mg/m3] or mass fraction [mg/kg] [301] .
What do you mean by diesel smoke?
Diesel smoke (like blowby and oil use) is a worrying engine symptom which indicates that an engine is not running well, and its service life is likely to be shortened considerably, unless remedial action is taken. Basically, smoke from a diesel engine indicates that something is not right.
How do you use ringelmann chart?
To use the chart, it is supported on a level with the eye, at such a distance from the observer that the lines on the chart merge into shades of gray, and as nearly as possible in line with the stack.
What is smoke and explain the principle used in the measurement of smoke?
2.5 Basic principle of paper filter-type smoke meter The basic principle of the smoke meter is in measurement of exhaust gas emissions sucked through a filter paper. The blackening of filter paper is measured with reflectometer and indicates the soot content in the exhaust gas.
What is smoke density?
October 8, 2018 by Lisa League. This test measures the amount of smoke given off by a material that is burning or smoldering. The material is tested when it begins to smolder and again when a flame source is added. The smoke density is between 0 (no smoke generated) and 800.
Why do diesels smoke?
Diesels are more likely to produce soot than gasoline engines because they depend on compression to achieve and sustain their required pressure and temperature. When a diesel has (very) low compression, the fuel-air mixture won’t heat up enough to burn completely resulting in large amounts of black smoke.
Why do diesel engines smoke?
Over-fueling is the primary cause of black smoke from the exhaust of a heavy duty diesel engine. Over-fueling can be caused by diesel fuel injector wear that enlarges the nozzle hole or erodes the injector needle and allows excess fuel to flow into the combustion chamber.
What is smoke and explain the principle used in measurement of smoke?
What is ringelmann number?
The Ringelmann scale is a scale for measuring the apparent density or opacity of smoke. It corresponds to an opacity of 20%. Shades 2, 3, 4 and 5 correspond to opacities of 40%, 60%, 80% and 100% (completely black) and are usually considered to be “black smoke” by air pollution boards of most countries.