Particulate Partial Flow Sampling System for Transient Test Cycles

Sierra’s Emissions Systems Division showed their world renowned Model BG®-3 Particulate Partial Flow Sampling System at the Testing-Expo in Novi, Michigan, October 22-24, 2008. The Model BG®-3 provides accurate, repeatable Engine Particulate Matter (PM) emissions measurements for transient and steady-state engine and vehicle testing.

Led by the Model BG®-3, particulate partial flow sampling of particulate emissions has gained great acceptance and popularity due to clear advantages over CVS systems. Designed to reduce the capital and operating costs associated with full-flow dilution testing and accelerate development and certification cycles, the BG®-3 is ideal for transient test cycles of diesel, gasoline, or natural gas engines of any size to be used in both engine and chassis test cells. It is also exceptionally suited for steady-state test cycles as well.

The BG®-3's patented Transient Dilution Airflow Control (TDAC™) is at the heart of its sampling speed. TDAC™ is Sierra's ultra fast flow apportionment, measurement, and control system to execute proportional sampling effectively. Using TDAC™, the BG®-3 accomplishes transient proportional sampling to accurately compensate for large variations of change in engine speed, load, airflow, and fuel values over a short time frames during the transient cycle testing.

The BG®-3 was developed to ISO 16183 standards and comes with user friendly software that allows the knowledgeable engineer the diversity of testing any size or fueled engine for particulates. The operation, calibration and trouble shooting of the system can be accomplished either locally or remotely. In addition, Sierra’s BG®-3 meets all EPA 1065 regulations. The Model BG®-3 is approved by the EPA for use in certification and compliance testing of on-road engines, as an approved alternate device to the full-flow CVS system.

For complete technical information on the BG®-3 visit www.sierraemissions.com or call 800... and speak to one of Sierra’s flow experts.

ABOUT SIERRA

Sierra is one of the most trusted manufacturers of high performance flow meters and controllers today. By combining superior product quality with a talented global support network of flow experts in 47 countries, Sierra consistently delivers quality flow measurement solutions for each customer.

Our Thermal Mass, Transit-Time Ultrasonic, Vortex Shedding and Multivariable instruments are available in both standard and customized versions for applications in laboratory, industrial and hazardous environments. Sierra’s flow measurement technologies precisely measure or control very low flows of gas down to less than 1 sccm full scale as well as extremely high flows of gas, liquid, and steam. With rugged product design, cutting-edge innovation, and a worldwide team of flow experts, experience why customers around the globe rely on Sierra.

Visit us at www.sierrainstruments.com or call us at 800-866-0200 to learn more.