ELIMFILTERS Canonical Knowledge · Approved
HE-CRIVA High-Efficiency and Critical Air Filtration
Engineering Reference · Industrial & Process
Platform: AEREMIS™
Technology: HE-CRIVA™
Engineering Relationships
- HE-CRIVA™ addresses fine airborne particulate where the required cleanliness level is more demanding than general ventilation duty.
- Final-stage performance depends on the filtration media together with filter integrity, sealing and bypass control at the housing interface.
- Staged prefiltration may be used to protect final high-efficiency stages from premature loading.
- Selection requires a defined cleanliness requirement, fine-particle challenge, pressure-drop boundary and verification method.
- HE-CRIVA™ maps to TC-AIR-02 within the AEREMIS™ platform.
Problems
- Unexpected cleanliness loss
- Premature final-stage loading
- Seal or frame leakage
- Pressure drop outside expected trend
Failure Modes
- Filter-to-housing bypass
- Damaged or improperly seated final-stage filter
- Premature loading caused by inadequate upstream particulate control
Diagnostic Methods
- Inspect final-stage sealing surfaces, frame seating and housing condition.
- Trend differential pressure rather than relying only on elapsed service time.
- Verify that upstream stages are controlling loading as intended.
- Use the project-defined integrity or cleanliness verification method when required.
Operating Conditions
- Defined cleanliness requirement
- Fine-particle challenge
- Strict bypass control
- Final-stage pressure-drop sensitivity
- Controlled production or critical ventilation environment
Standards
- ISO 29463-1:2024 — classification, performance, testing and marking of high-efficiency filters and filter media.
- ISO 29463-2:2011 — aerosol production, measuring equipment and particle-counting statistics used by the ISO 29463 test family.
- ISO 29463-3:2011 — testing of flat-sheet high-efficiency filter media.
- ISO 29463-4:2011 — filter-element leakage testing within the ISO 29463 test family.
- ISO 29463-5:2022 — test method for high-efficiency filter elements.
Shared Engineering
- Filtration Efficiency
- Differential Pressure
- Sealing
- Contaminant Loading
- Service Life