• Fan system: adopts long-life, low-noise, maintenance-free centrifugal fan with small vibration characteristics to ensure stable operation of the equipment.

• Double-layer negative pressure structure: unique double-layer design effectively prevents air leakage and ensures no risk of pollution.

• Uniform air distribution performance: the use of high-efficiency equalization design, to ensure uniform wind speed, to meet the requirements of class 100 cleanliness.

• Air speed adjustment: The air speed can be adjusted by automatic constant or graded adjustment to adapt to different experimental needs.

• Sealing design: Liquid tank design ensures perfect sealing to avoid any possible contamination.

• Internal structure: Simple internal structure, easy to clean and maintain to ensure long-term use efficiency.

• Filtration system: Equipped with high efficiency filters to ensure pure air and meet the requirements of GMP and other standards.

• Noise control: Unique air duct design effectively reduces the noise when the whole machine is working.

• Operation area protection: Hundred levels of vertical laminar flow protection ensures a sterile environment in the operation area.

• Environmental adaptability: Suitable for working in the environment with temperature from 5°C to 40°C and relative humidity not exceeding 85%.

• Power requirements: use AC380v, three-phase, 50HZ power supply.

• Material: the box structure material is SUS304# sanded stainless steel, thickness 1.0MM, smooth surface without welding marks.

• Material Selection

The overall cabinet of the negative pressure weighing chamber is usually made of SUS304 stainless steel, a material with good corrosion, abrasion and high temperature resistance, making it ideal for use in the pharmaceutical and food industries. Stainless steel not only ensures that the equipment is robust and durable, but is also easy to clean and sterilize, helping to maintain the cleanliness of the weighing chamber and preventing the accumulation of bacteria and dust.

• Structural design

The negative pressure weighing chamber is designed to provide a stable and uniform negative pressure environment, thanks to its unique structural design. This includes highly efficient filtration systems such as primary filters and high efficiency filters, which effectively capture and filter out airborne particles to ensure air purity. In addition, the use of an even flow membrane ensures uniform air velocity on the air outlet side, providing a stable airflow environment for weighing operations.

• Functional Characteristics

The core function of the Negative Pressure Weighing Chamber is that it creates an internal environment that is negatively pressurized relative to the outside environment, which means that dust or particles generated in the chamber do not escape into the outside space, thus protecting the operator and the environment from contamination. This design also helps to improve the accuracy and repeatability of the weighing process, as a stable negative pressure environment minimizes the influence of external factors on the weighing results.

• Application Scenarios

Negative pressure weighing chambers are widely used in pharmaceuticals, microbiology research and scientific experiments where accuracy and safety are critical. Whether you are weighing pharmaceuticals or dispensing reagents, negative pressure weighing chambers provide the clean environment necessary to prevent cross contamination and ensure safe operation.

• Air circulation and filtration: After the indoor air is pre-treated by primary and secondary filters, it is pressed into the static pressure box by centrifugal fans and then blown out from the airflow diffusion air supply unit after passing through the high-efficiency filter to form a clean airflow.

• Negative pressure environment formation: the operating area and the external environment to form a relative negative pressure, to prevent the spread of pollutants to the outdoors.

• Even flow design: Through even flow membrane design, it ensures the formation of stable unidirectional airflow in the working area to control the spillage of dust and reagents as well as cross-contamination.

• Control system: Adopting advanced PLC control system and sensing system to realize precise control of air volume and real-time monitoring of weighing environment.

Options. 

1	Wind Speed Sensor
2	Differential Pressure Sensor
3	converter
4	touchscreens
5	PLC control
6	Polymer homogeneous membrane