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Equipement de décontamination du personnel et du matériel
Boîte à pression négative Containment Pass
A transfer chamber held below adjacent-room pressure so leakage is drawn inward and routed to filtered exhaust.
- Negative Chamber Bias
- Filtered Exhaust
- Controlled Make-Up Air
- Pressure-Gated Interlocks
Introduction de produit
The negative-pressure containment pass box moves dusty, potent or odorous material without allowing a passive leak towards the support space. A variable-speed exhaust fan maintains the selected negative pressure, while a controlled make-up path avoids excessive suction at the door seals. A pressure signal controls the interlock logic and indicates when the chamber has recovered after a transfer.
Key Features
A deliberate make-up air path limits high-velocity leakage through random gaps.
The clean-side door can remain inhibited until pressure recovers.
A sealed final-filter service panel separates captured material from the corridor.
Smooth welded internal surfaces support wipe-down after transfer.
Préoccupations du client produit
The chamber needs to keep leakage inward without making doors difficult to operate or disrupting adjacent spaces.
Exhaust force makes a door difficult to unlatch.Controlled make-up air and an adjustable setpoint limit the differential pressure.
Filter loading reduces extraction and reverses the leakage direction.Pressure-responsive fan control adjusts airflow as resistance changes.
Captured powder is exposed during routine filter service.A gasketed service housing keeps handling on the designated dirty side.
The next door opens before the chamber recovers.Pressure-gated interlocks delay release until the selected negative bias returns.
Les applications typiques
Potent compound transferPowder dispensing roomsHazardous sample handlingOdour-controlled process suites
Paramètres techniques
Typical pressure-containment construction ranges for a negative-pressure pass box are listed below.
| Matériaux de base | Welded SUS 304 or SUS 316L chamber with variable-speed exhaust, make-up inlet and HEPA final filter |
|---|---|
| Panneau épaisseur | 80-150 mm sealed plenum and double-wall construction |
| Largeur effective | 500-1200 mm clear chamber width |
| Longueur maximale | Up to 1500 mm chamber depth |
| Acier face épaisseur | 1.2-1.5 mm stainless-steel facing |
| Densité Core | 35-40 kg/m³ polyurethane insulation around pressure and filter plenums |
| Conductivité thermique | 0.022-0.028 W/(m·K) for polyurethane plenum insulation |
| surface finie | Brushed or electropolished stainless chamber with smooth coved internal corners |
| Type joint | Pressure-tight welded body with gasketed interlocked doors and sealed filter-service panel |
| Customisation | Disponible en fonction de l'application prévue et de l'environnement d'exploitation. |
Options disponibles
Typical -10 to -50 Pa pressure rangeSafe-change exhaust filterRemote alarm contactsRoom-specific pressure setpoint
Planning a Negative-Pressure Containment Pass Box specification?
Envoyez-nous vos dimensions, conditions d'installation, objectifs de performance et finition de surface requise.
