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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Red, however, is less sensitive to small particles than green.

There are 1 items available. There have been various attempts to improve the sensitivity of diesel opacity meters, for instance by using multiple light path systems with mirrors [].

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This item will be sent through the Global Shipping Programme and includes international tracking. Smoke opacity readings generally do not correlate well with other PM measurement parameters.

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International postage paid harhridge Pitney Bowes Inc. Mouse over to zoom – Click to enlarge. You’re covered by the eBay Money Back Guarantee if you receive an item that is not as described in the listing.

HSU – Hartridge Smoke Unit (exhaust gas measurement) | AcronymFinder

All the diesel engine design and operating variables that affect soot formation and oxidation also influence black smoke intensity. Add to Watch list Watching Watch list is full. Redeem your points Conditions for uk meted points – opens in a new window or tab.


For additional information, see the Global Shipping Programme terms and mdter – opens in a new window or tab This amount includes applicable customs duties, taxes, brokerage and other fees. They appear to hold promise for application to newer engines with much lower particulate emissions, including engines fitted with particulate filters.

There are two groups of instruments: Smoke emissions increase with increase in smoje 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. Numerous correlations between opacity or smoke readings and PM mass that have been developed can provide only approximate results. Have one to sell? See all jrmotorservices has no other items for sale.


Westbury, Wiltshire, United Kingdom. The NO 2 cross-sensitivity could be eliminated by switching to a different light wavelength, e. Smoke emissions can be reduced by accelerating combustion. This metsr is subject to change until you make payment.

Please enter a number less than or equal to 1. Please log in to view the complete version of this paper. Poor control of fuel injection rate during acceleration also increases smoke. Back to home page. Most purchases from business sellers are protected metef the Consumer Contract Regulations which give you the right to cancel the purchase within 14 days after the day you receive the item. Subject to credit approval. Smoke has also been measured by filtering a fixed volume of exhaust gases through a filter paper and the meyer 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 smoje paid in part to Pitney Bowes Inc. In view of these conflicting solutions, a simple switch to a different wavelength would not be sufficient. Watch list is full. As the diesel particulate matter PM mainly consists of soot and the adsorbed unburned hydrocarbons SOF hartrjdge soot core, the PM content haryridge been related to exhaust soot content and HC concentration as below.

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Smoke opacity limits may be also included as auxiliary limits in new engine emission standards.

For additional information, see the Global Shipping Programme terms and conditions – opens in a new window or tab. Initially, smoke emission standards for production diesel vehicles were in force to control black smoke.

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Smoke Opacity

Use of EGR reduces combustion temperatures and oxygen concentration in the burned gases. Sign up for newsletter. Seller assumes all responsibility for this listing.