Sierra Instruments, Inc.

Sierra Brings Leading-Edge Particle Number Sampler to Market


Source: Sierra Instruments, Inc.

Lansing, Michigan -- Sierra-CP and Southwest Research Institute (SwRI) have signed a 20-year technology licensing agreement to bring SwRI’s leading-edge particle number sampling system to market.  The deal calls for Sierra to commercialize and produce SwRI’s fully ECE R49-compliant particle number dilution system, which has been used exclusively by SwRI for over a decade.
SwRI’s applied particle technology research, certification and calibration laboratory supports the new product.  

The technology, named SPNS, for Solid Particle Number System will be the only patented (US 6,796,165) R49-compliant PN certification-grade system on the market.  The SPNS, brand named “Sierra SPNS Elite,” initially will be offered as a fully compliant >23nm PN system in two versions.  A sub-23nm version will be introduced next year.   

Increasingly, regulatory activity surrounding solid Particle Number (PN) has become one of the more difficult emissions challenges for engine and vehicle manufacturers today.  Manufacturers of, and researchers in, automobiles, diesel engines, turbines, exhaust after-treatment systems, motorcycles and mopeds are affected.  

The two-stage dilution scheme in SPNS has enabled ECE-R49, Swiss, Euro6, EU engine and vehicle PN certifications, and is fully compliant per SAE Air 6241 specifications for aircraft turbine PN quantification down to 15nm. SwRI’s Dr. Imad Khalek is the inventor of SPNS. 

Come see the new Sierra SPNS Elite on the floor at the Automotive Testing Expo in Novi, Michigan, October 23-25, Booth 1006.

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