Smokemeter Mark 4 HV Opacimeter, Diesel Engine Exhaust Tester Hartridge – Made in UK Included- – Trolley/ Cabinet – Lucas Printed Circuit. How to choose the correct diesel exhaust emission smoke meter for automotive diagnostic use and MOT/DOT (also know as HSU – Hartridge Smoke Units). There are two groups of conventional smoke meters include the Hartridge or Bosch RTT opacity meters.

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Accepted, Eligibility for PayPal Credit is determined at checkout. Get an immediate offer. The NO 2 cross-sensitivity could be eliminated by switching to a different light wavelength, e. Add to Watch list Hrtridge. Please enter up to 7 characters for the postcode. Learn More – opens in a new window or tab. However, as no satisfactory solution has yet been found, conventional opacity meters based on light extinction measurement may become replaced with devices utilizing other measurement principles.

Use of EGR reduces combustion temperatures and oxygen concentration in the burned gases.

Description Postage and payments. Advancing injection timing increases combustion temperatures and allows more time for oxidation of soot thereby reducing smoke emissions. The actual VAT requirements and rates may vary depending on the final sale. Diesel Smoke Visible black smoke emissions from diesel engine result on account of high concentration of soot in the exhaust gas.

They are often used to evaluate smoke emissions in locations outside the laboratory, such as in maintenance shops or in the field.

What is Hartridge Smoke Unit (HSU) ? for Diesel engine emission

There are two groups of instruments: Visit my eBay shop. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. An item that has been previously used. Since opacity readings may be affected by sulfates, HCs, water vapor, as well as by PM composition or physical conditions e.


In fact, the smoke opacity measurement is the only relatively low-cost and widely available method to measure a PM-related emission parameter in the field. In view of these conflicting solutions, a simple switch to a different wavelength would not be sufficient.

Please enter a valid postcode. If you have questions about this VAT, please contact the seller. Smoke emissions increase with increase in engine load due to overall richer fuel-air ratios and hence, the rated engine power was specified based on the maximum permitted smoke density to curb black smoke emissions during engine operation.

Seller assumes all responsibility for this listing. Visible black smoke emissions from diesel engine result on account of high concentration of soot in the exhaust gas.

In view of the demands of advanced, low emission diesel engines, the following areas of concern can be identified in conventional smoke opacity meter technology:. These instruments have been designed to quantify the visible black smoke emission utilizing such physical phenomena as the extinction of a light beam by scattering and absorption. Select a valid country.

Smoke Opacity

Frequently bought together Feedback on our suggestions – Frequently bought together. For additional information, see the Global Shipping Programme terms and conditions – opens in a new window or tab This amount includes applicable customs duties, taxes, brokerage and other fees. Add to basket. Watch list is full. Be the first to write a review. Representative APR variable You’re covered by the eBay Money Back Guarantee if you receive an item that is not as described in the listing.

Poor control of fuel injection rate during acceleration also increases smoke. Skip to main content. Smoke has also been measured by filtering a fixed volume of exhaust gases through a filter paper and the smoke stain thus formed is evaluated on a grayness scale by a light reflectance meter Bosch smokemeter.

Learn More – opens in a new window or tab Any international postage is paid in part to Pitney Bowes Inc. As the diesel particulate matter PM mainly consists of soot and the adsorbed unburned hydrocarbons SOF on soot core, the PM content has been related to exhaust soot content and HC concentration as below.


Mouse over to zoom – Click to enlarge. Smoke and smoke opacity meters are instruments measuring the optical properties of diesel exhaust. See other items More Learn More – opens in a new window or tab Any international postage and import charges are paid in part to Pitney Bowes Inc. Take a look at our Returning an item help page for more details. This item may be a floor model or an item that has been returned to the seller after a period of use.

Numerous correlations between opacity or smoke readings and PM mass that have been developed can provide only approximate results.

Higher combustion rates are obtained by hqrtridge fuel air mixing through use of high swirl rates, by increasing injection rate and improving fuel atomization. All the diesel engine design and operating variables that affect soot formation and oxidation also influence black smoke intensity. Smoke emissions can be reduced by accelerating combustion. The seller hasn’t specified a postage method to United States.

What is Hartridge Smoke Unit (HSU) ? for Diesel engine emission | Physics Forums

Back to home page. Contact the seller – opens in a new window or tab and request post to your location. Email to friends Share on Facebook – opens in a new window or tab Share on Twitter – opens in a new window or tab Share on Pinterest – opens in a new window or tab. Learn More – opens in a hrtridge window or tab International postage and import charges paid to Pitney Bowes Inc. Second generation hatrridge meters based on laser light scattering are much more sensitive and appear to hold promise for application to newer engines with much lower particulate emissions.