HEPA-filtered dynamic pass box with upper fan and stainless body

Personal und Material Dekontamination Ausrüstung

HEPA-filterte Dynamische Passbox

Ein aktiver Transfers chrank, der gefilterte Luft durch seine ineinandergreifen den Material kammer umwälzt.

Interne HEPA-Rezirkulation
Decke Reinluft versorgung
Low-Level-Return Slots
Filter Pressure Indication

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Produkteinführung

The dynamic pass box incorporates air-handling space around an enclosed stainless transfer chamber. Its upper fan/filter assembly supplies the chamber from above, and return openings near the base feed air back into the internal circuit. This recirculating arrangement addresses particles suspended during loading without requiring a dedicated building supply duct for the ordinary configuration. Doors, prefilter access and the final-filter housing are coordinated with the selected control sequence and maintenance side.

Key Features

A prefilter provides a separately serviceable first stage before final filtration.

Distributed return openings avoid relying on a single small return point.

Filter-resistance indication supports maintenance trending between service visits.

Selectable fan control allows the circulation setting to suit the loaded chamber.

Door-delay functions can coordinate loading with the chosen air-cleaning cycle.

Lösungen für Ihre Anwendung

Air cleaning must work with the load geometry and the way operators use the chamber.

Wrapping releases loose particles after material has been loaded.Use a defined loading practice and an internal filtered-air stage before the receiving-side transfer; remove unnecessary outer packaging separately.

A large carton blocks the lower air-return area.Choose chamber proportions and load positioning that preserve the return path instead of compensating with a longer timer alone.

The circulation setting drifts as the filters accumulate dust.Trend pressure drop alongside the actual airflow checks and service the appropriate filter stage before resetting the operating condition.

The receiving door is released after a disrupted loading sequence.Select control logic that handles an opened door or fan fault distinctly from a completed cycle, rather than treating every countdown as successful treatment.

Typische Anwendungen

Prepared components entering medical-device assemblyWrapped supplies for biotechnology support roomsContainers for controlled packaging operationsParticle-sensitive electronics material transfer

The unit conditions chamber air; it does not sterilize material surfaces or remove chemical vapours. Sterile-process duties and hazardous-substance transfer require a separately supported transfer method rather than reliance on the HEPA element or interlocked doors alone.

Technische Parameter

These commonly offered dynamic-pass-box configurations are selectable references rather than a tested STjh operating schedule. Chamber size, fan selection, filter resistance and the load arrangement are considered together; no fixed airflow, recovery time, power or noise result is assigned here.

Air Circuit	Integral fan-driven recirculation through the chamber filtration loop
Internal Size References	500 × 500 × 500 or 600 × 600 × 600 mm, W × D × H
Chamber Lining Options	304 stainless steel; 316L stainless steel selectable
Final Filter Selection	H14 HEPA element to EN 1822
Prefiltration	Serviceable particle prefilter upstream of the final filter
Chamber Air Path	Upper filtered-air supply with low-level return grilles
Ventilatoranordnung	Integrated centrifugal blower with selectable speed adjustment
Electrical Supply Reference	230 V AC, single phase, 50 Hz configuration
Tür steuerung	Two-door electronic interlock with selectable delay logic
Filter Monitoring	Differential-pressure indication across the final filter
Operating Mode Options	Continuous circulation or a timed post-loading air cycle
Service Arrangement	Accessible filter housing and separate prefilter service provision
Customisierung	Verfügbar je nach beabsichtigter Anwendung und Betriebsumgebung.

Verfügbare Optionen

Variable-speed fan controlTimed circulation and access-delay functionsDigital or analogue filter-pressure displayHEPA test-access connectionsStainless outer casingWall or stand-supported installation

The usual starting arrangement combines an interlocked chamber, recirculation fan, prefilter and final filter. Display format, operating modes and service access are selected for the transfer route. A room-pressure display, when required, is a separate sensing function from pressure drop across the HEPA filter; neither a gauge nor a filter grade establishes a complete room classification.

Selection and Installation

Choose the usable chamber around the actual transfer load, leaving the ceiling outlet and low-level return openings unobstructed. Tall containers and tightly packed trays can redirect the air even when the fan is running. Establish the loading pattern and required particle-recovery behaviour before choosing the circulation setting or the receiving-door delay.

Filter pressure drop helps track loading but is not a direct measurement of filter leakage or chamber cleanliness. The selected controls should distinguish normal circulation, an interrupted cycle and a fan or door fault; an elapsed timer alone does not establish that goods are sterile or safe to release. For an existing wall where the installation and maintenance envelope are the main constraint, compare the self-contained HEPA pass box while retaining the same need to assess the loaded airflow path.

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