Filter & Air Handling

The BG-3 is designed primarily to satisfy requirements for gravimetric filter measurement of PM, using filter holders or Sierra’s Automatic Filter Changer to comply with engine emissions standards. Sierra also offers filter weighing chambers and air handling systems to suit customers’ needs.

Automatic Filter Changers
Sierra’s automatic filter changers allow the engineer to stay out of the test cell during testing as several tests are done in succession.

Filters & Filter Holders
Sierra stocks 47mm, 70mm, and 90mm filter holders as well as filter media for use in ongoing particulate testing.

Filter Weigh Chambers
Our filter post-processing Weigh Chamber is a compact, complete ready to run package.

Heat-Pak: Sample Temperature Control
Our Heat-Pak is a heated and controlled particulate package built to the EPA 1065 regulation.

Air Pak: Air Handling & Scrubbing
Our Air-Pak is an air handling & scrubbing system designed to clean compressor air (used for dilution air in the BG-3) before it enters the BG system.