Dispensing booth, also know as reverse laminar air flow (RLAF), sampling booth, weighing booth or down-flow booth, is mainly applicable to pharmaceutical, food and healthcare industries. it is designed to provide vertical laminar airflow to work area, most of air is recycled within booth, partial air is exhausted, so as to make working area in negative pressure state, thus containing particles or powder from overflowing outside of booth when weighing or sampling raw materials are conducted inside booth. More importantly, the negative pressure booth can protect worker’s health from inhaling particles or powders.
Control Modes
According to control mode, our downflow booth has two versions:
1: Standard Version: Varied Frequency Device (VFD)-control Mode; 2: Advanced Version: PLC-control Mode
Features:
- Negative pressure design to contain the powder inside booth
- 100% stainless steel 304 design, easy cleaning and GMP-compliant
- Top air supply with H14 HEPA filter, reaching air cleanliness of ISO-5/Class 100
- DOP test ports to test air leakage of HEPA filter
- Modular and disassembled design to enable easy transport and fast site assembly.
- Built-in sockets with plastic cover for the power supply of weighing or sampling devices and other electric appliance.
- Emergency button to power off the booth in case of emergency.
Categories: Cleanroom Dispensing Booth, Laminar Flow Equipment
Tags: Downflow Booth, Laminar Airflow Booth, Powder Containment Booth, reverse laminar air flow, Sampling Booth, Weighing Booth
Description
DISPENSING BOOTH
Introduction of Dispensing Booth
A dispensing booth, know as downflow booth, reverse laminar air flow (RLAF), sampling booth or weighing booth, is a specialized enclosure designed to provide a controlled environment for the dispensing of materials or substances. These booths are commonly used in pharmaceutical, laboratory, and industrial settings where it is important to prevent contamination or exposure to hazardous materials.
Dispensing booths typically feature HEPA filtration systems to remove airborne particulates and can be designed with a variety of features such as negative pressure, laminar flow, and air conditioning to meet specific requirements.
Working Principle of Dispensing Booth
Dispensing booths work on the principle of providing a controlled environment for the dispensing of materials or substances. This is achieved by creating a physical barrier between the operator and the surrounding environment, and by filtering the air within the booth to prevent contamination.
Dispensing booths feature a HEPA (High Efficiency Particulate Air) filtration system, which removes airborne particles from the air passing through it. This helps to prevent contamination of the materials being dispensed, as well as protecting the operator from exposure to hazardous substances.
| Model | WDDB-1600 | WDDB-2000 | WDDB-2500 |
|---|---|---|---|
| External Size (W*D*H) | 1600*2400*2600 mm | 2000*2400*2600 mm | 2500*2400*2600 mm |
| Internal Size (W*D*H) | 1500*1800*2000 mm | 1900*1800*2000 mm | 2400*1700*2000 mm |
| Rated Power | 3 KW | 4 KW | 5 KW |
| Total/Exhaust Volume | 8000/800(m3/h) | 10000/1000 (m3/h) | 13000/1300(m3/h) |
| Power Supply | Two cables, One cable: 3-phase 380V, 50Hz and another one: 1-phase 220V, 50Hz | ||
| If 220V for 3-phase or 110V for 1-phase, please advise before placing order | |||
| Air Cleanliness Class | Vertical laminar flow, ISO-5 (Class 100) | ||
| Average Airflow Speed | 0.45±20%m/s | ||
| Pre-Filter | Non-woven Fabric Filter Efficiency G4（90%@5μm) |
||
| Medium Efficiency Filter | Pocket-type Filter, Filter Efficiency F8 85%~95%@1~5μm) （99.99%~99.999%@0.5μm） |
||
| HEPA Filter | Gel-sealed HEPA Filter Filter Efficiency H14 | ||
| Differential Pressure Gauge | 0-60 Pa for pref-filter | ||
| 0-250 Pa for medium efficiency filter | |||
| 0—500 Pa for HEPA filter | |||
| Noise | ≤75 db（A | ||
| Light Intensity | LED Lights, ≥300 Lux tested at the level of 1m above floor | ||
| Model | WDDB-1600 | WDDB-2000 | WDDB-2500 |
PRODUCT DETAILS
Testing Before Leaving Factory
WHAT CAN BE CUSTOMIZED?
DISPESNSING BOOTH SIZE
Either internal size (working area) or external size(as showed below) can be customized, it is subject to technical feasibility. If you need to customize the booth, please contact ours sales first.
STANDARD VERSION
ADVANCED VERSION
VFD-CONTROLLED
PLC-CONTROLLED
Varied Frequency Device (VFD) control mode, as the name suggest, is a mode that by adjusting supply frequency, the rotary speed of blower, that is, the airflow will be changed accordingly. Higher frequecy, higher rotary speed of blower, higher air speed. The supply air volume should be increased only when the filter resistace is increased.
Compared with VFD control mode, the PLC control mode is an advance version based on VFD control mode, it is more intelligent and convenient in operation. Equiped with differential pressure sensor (Brand: DWYER), Air speed sensor (Brand: E+E), PLC control system can automacially control airflow speed, lighting, and display the real-time downstream airflow speed, and the differential pressures of the three-stage filters. When the values of airflow speed and differential pressure exceed the set ones, the buzzer will make alarming sound.
| Downflow Booth Configuration |
VFD-Controlled Downflow Booth |
PLC-Controlled Downflow Booth |
|---|---|---|
| Pre-filter | Yes | Yes |
| Medium-efficiency Filter | Yes | Yes |
| HEPA Filter | Yes | Yes |
| DOP Test Port | Yes | Yes |
| Dust-proof Socket (Class: IP66) |
Yes Quantity is 3 by default |
Yes Quantity is 3 by default |
| Airflow Equalizing Membrane | Yes | Yes |
| LED Light | Yes | Yes |
| LED Light On/Off | By pressing button on booth | By touching PLC screen(Brand: Siemens) |
| Differential Pressure Gauge | Yes See the differential pressures by checking the DP gauges |
No |
| Differential Pressure Sensor | No | Yes Sensor Brand:（DWYER) Equipped with the sensors, the values of differential pressures can be seen on PLC screen |
| Airflow Speed Regulation | Yes by pressing the buttons on VFD panel |
Yes Sensor Brand: (E+E）automatically adjusted by PLC system |
FAQ
What is the minimal order quantity for placing order?
A: For the dispensing booth, the moq is ONE.
What’s the lead time for my order?
A:Â If your order is less then 5Â booths, the lead time is within 15 days after receiving advance payment.Â
What is the warranty period for the hood?
A: The warranty period we guarantee to our customer is 1 year after the booth leaving our factory
Can your booth be disassembled to go into my exisiting room?
A: Pleas your attention should be attached to the following:
Local voltage: 1-phase 220V, 50 hz or 1-phase 110V, 60hz. You can let us know when you request a quote from us.
What should I know before placing order?
A: Yes. The medium (WDDB-2000) and the biggest size(WDDB-2500) are assembled type when leaving our factory. For the smallest model (WDDB-1500), if required, it can be designed to be the same.
Â
Not find your preferred cleanrooms or laminar flow equipment?
No worry!!! We have some hard-wall cleanrooms and various laminar air flow equipment available. Please check them below, Thanks!