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The key features of the recirculatory dynamic pass box described are summarized below, based on standard industry practices and your specifications.
Design and construction
Material: The body is made from high-grade stainless steel (SS 304) with a hairline finish. This offers a durable, chemical-resistant, and easily sanitized surface suitable for cleanroom environments.
Doors: It includes double-skin, hinged doors with viewing glass to monitor the contents. The double-skin design enhances structural integrity and provides a better seal.
Size: The specified overall dimensions are 850 x 740 x 1150 mm, indicating a larger-than-average unit suitable for transferring bulkier materials.
Filtration and airflow
Recirculatory design: This system pulls air from within the pass box, filters it, and reintroduces it back into the chamber. This creates a continuous, high-purity environment within the box, reducing cross-contamination without exhausting air to the outside.
HEPA filter: A high-efficiency mini-pleat HEPA filter with 99.97% efficiency captures particles as small as 0.3 microns, achieving a high level of air cleanliness (often ISO Class 5 / Class 100) inside the pass box.
Motor blower: A statically and dynamically balanced motor blower ensures quiet and vibration-free operation while providing a uniform and controlled airflow velocity.
Discharge-type air system: This refers to the filtered, high-velocity air being discharged into the chamber, which helps to scrub contaminants off the surfaces of materials being transferred.
Control and safety features
Electromagnetic interlocking: A heavy-duty electromagnetic interlock prevents both doors from being opened simultaneously. This is a critical safety feature that maintains the pressure differential and prevents unfiltered air from passing between clean and non-clean areas.
Digital pressure gauge: A digital pressure gauge is included to monitor the differential pressure across the HEPA filter. A rising pressure indicates that the filter is getting clogged and needs to be replaced.
Hour meter: The hour meter tracks the operational time of the unit, helping to schedule routine maintenance and filter replacements.
UV light and interlocking: An 8-watt UV germicidal light is provided for disinfection. It is interlocked with the doors so that the UV light is active only when both doors are closed, protecting personnel from UV exposure.
Electric buzzer and lighting: An electric buzzer provides an audible alarm, while an internal lighting arrangement illuminates the chamber. These features enhance operational safety and usability.
The pass box is a special equipment for transferring items between different levels of clean areas. It is possible to prevent the low clean area air from
entering the high clean area effectively, effectively ensuring the cleanliness of the work area. The pass box is also equipped with electronic interlock or
mechanical interlock function
The interlock device, Control the two door can't open in same time
Note: Choose any interlock type, need the UV light or not, must be mark
Technical Specifications of Dynamic Pass Box:
Cleanliness: Dust counts exceeds Class 100 requirements as per ISO 14644 & IEST-RP-CC001.3
Velocity at Grill: 90 ± 20 FPM at 150 mm From HEPA Filter Face, (0.45 ± 0.05 m/s) | MOC SS 304 / SS 316 (1 mm / 1.2 mm) | SS 304 Door Hinges and Door Handles
Pre Filter: 5 Micron, EU5 grade with Efficiency 95% – Washable (For Fresh Air & Recirculation) (Make: AAF) (American Air Filter)
HEPA Filter: 0.3 Micron, H14 Grade with Efficiency 99.999%, Supply “AAF” HEPA Filter
Controller: Electromagnetic Door Interlocking (Allows to open one door at a time)
1 Year warranty from the date of dispatch for Pass Box Controller set (Magnet, Display, Connection Cables)
Motor Blower: Statically & Dynamically Balanced Single/Double Inlet Centrifugal Type Motor Blower
(1 Year warranty from the date of dispatch for Motor Blower )
Magnehelic Gauge: 0 to 25 MM, To measure differential pressure across HEPA Filter (Make: Omicron / Care / Nextech)
Speed Variable: To adjust the speed of Motor Blower and maintain the required velocity
Electrical:
LED Light :- Diffused Fluorescent Lighting to provide an intensity of 300 LUX
UV Light :- 8W-11W (Make: Phillips) (Philips does not provide warranty for UV Lights. Fitting for UV Light has 6 Months Warranty from the date of Supply.
Display :- Two Line Digital Display with ON/OFF Buttons with LED Indication
Special features ? Double Skin Body Construction, Recirculatory Plenum on Both Sides
? Door Open / Close Delay Audio Visual Alarm UV Hour Meter (Inbuilt)
? 30 MM Double Skin Doors with View Panel
? Double Side 5 mm Toughened Glass
Noise Level: Less than 65 DB on scale
Power supply: 230V ± 10V, 50 Hz, Single Phase (Also Available in 3 Phase)Features of Dynamic Pass Through Box:
Automatic door system for hands-free operation
HEPA filter for clean air circulation
UV-C sterilization for disinfection
ESD protection for sensitive electronics
Adjustable airflow control
Stainless steel construction for durability
Interlocking doors for containment
LED lighting for visibility
Touchscreen control panel for user interface
Alarms for maintenance alerts
Application: Used to transfer materials between different classified areas, preventing cross-contamination.
Type: Recirculatory (Active) Dynamic Pass Box.
Dimensions: Overall size of 850 x 740 x 1150 mm, indicating a larger-than-average capacity for handling bulkier items.
Construction
Body Material: High-grade Stainless Steel (SS 304) with a hairline finish. This provides excellent durability, corrosion resistance, and ease of cleaning.
Doors: Double-skin, hinged doors are equipped with a viewing glass panel for material visibility without compromising the chamber's seal.
Internal Covings: Internal corners are coved to eliminate sharp edges, which prevents particle accumulation and simplifies cleaning and disinfection.
Filtration and Airflow
Filtration System: The unit features a two-stage filtration system for a high level of air cleanliness.
Pre-filter: Typically an EU6 grade filter to capture larger particles and extend the life of the HEPA filter.
HEPA Filter: A high-efficiency, mini-pleat HEPA filter with 99.97% efficiency captures particles as small as 0.3 microns.
Airflow Direction: A vertically recirculating, discharge-type air system. The dynamically balanced motor and blower create a positive pressure and a high-velocity air wash to "scrub" contaminants off the materials inside.
Control and Safety
Interlocking System: A heavy-duty electromagnetic interlocking mechanism ensures that only one door can be opened at a time, maintaining the pressure cascade between the connected cleanrooms.
UV Light: An 8-watt UV germicidal lamp is included for disinfecting the chamber between transfer cycles. For safety, the UV light is interlocked to be active only when both doors are closed.
Instrumentation:
Digital Pressure Gauge: Monitors the pressure differential across the HEPA filter, indicating when the filter needs to be replaced.
Hour Meter: Tracks the operational time of the UV lamp, assisting with maintenance and replacement schedules.
Indicators and Alarms: The unit includes an electric buzzer to signal different operational statuses or door interlock issues, as well as an internal lighting arrangement.
