Manual inverter system for air velocity

• The Neg Furls Negative Pressure Weighing Chamber utilizes a manual inverter system to ensure that the air velocity in the main working area is always uniform. This technology provides a stable airflow inside the weighing chamber through fine control, providing a solid airflow base for accurate weighing operations.

• Filter Differential Pressure Indicator

  The Filter Differential Pressure Indicator is another highlight of the Neg Furls Negative Pressure Weighing Chamber. It monitors the effective operation of each filter in real time and alerts the operator to carry out any necessary maintenance or replacement if the differential pressure is out of the normal range, thus ensuring the long-term stable operation of the weighing chamber.

• Unique air duct design

  The unique air duct design of the Neg Furls negative pressure weighing chamber effectively controls the noise of the entire machine, providing a quieter working environment for the user. In addition, the unique air duct design also helps to improve the air flow efficiency, which further enhances the weighing accuracy.

• Even flow design in the main working area

  When weighing and dispensing dust and reagents in the equipment, the main working area of the Neg Furls negative pressure weighing chamber has an equal flow design that can effectively control the spillage and upward movement of dust and reagents, preventing inhalation hazards to human health, and at the same time avoiding cross contamination of dust and reagents, protecting the operating environment and the safety of the operators.

• Hundred-level vertical laminar flow protection

  The weighing operation area of Neg Furls negative pressure weighing chamber is protected by 100-level vertical laminar flow, which complies with ISO6 (NF, EN, ISO14644-1) standards, ensuring the cleanliness of the weighing environment, meeting the requirements of the FDA and EU GMP as well as the domestic GMP, and providing a high-standard working environment for the pharmaceutical and other industries.

In summary, Neg Furls negative pressure weighing chamber provides a safe, efficient and accurate weighing environment with its advanced manual frequency conversion system, differential pressure display device for real-time monitoring of the filter status, unique and effective air duct design, equalized flow design in the main working area, and 100-level vertical laminar flow protection. These designs fully reflect the professionalism and practicality of Neg Furls negative pressure weighing chambers in the fields of pharmaceuticals, microbiological research and scientific experiments.

Material and Construction

• Negative pressure weighing chambers are typically constructed of 304 stainless steel with a thickness of approximately 1.0mm to ensure a robust and corrosion resistant unit. The overall structure is designed to be modular to facilitate on-site assembly and future maintenance.

• Technical Parameters

  External dimensions: Depending on the model, the external dimensions of the negative pressure weighing chamber may vary, generally between 1200mm and 1600mm in width, 1000mm and 1400mm in depth and 2000mm and 2400mm in height.

• Workspace dimensions: The internal workspace dimensions are typically around 1000mm x 1500mm x 1950mm, providing the operator with sufficient space to carry out weighing activities.

• Filtration System: The negative pressure weighing chamber is equipped with a three-stage filtration system, including primary, intermediate and high efficiency filters, to achieve efficient air purification.

• Air velocity: The air velocity is generally between 0.36-0.51m/s, which can be adjusted by frequency converter to meet different working requirements.

• Noise: The noise level is usually controlled below 75dB to provide a quieter working environment.

• Lighting: Lighting intensity is generally greater than 300 Lux to ensure the brightness of the operating area.

• Power supply: The power supply is 380V/50HZ to ensure the stable operation of the equipment.

The equipment adopts vertical unidirectional flow airflow form, the return air first passes through the primary filter for pre-filtering, to dispose of the large dust particles in the airflow. After pretreatment, the air passes through the intermediate filter for secondary filtration to fully protect the high-efficiency filter. Under the pressure provided by the centrifugal fan, it passes through the high-efficiency filter to meet the clean requirements. The operation area and the external environment form a relative negative pressure, thus ensuring that the dust in this area will not spread to the outdoors, and play a role in protecting the external environment.

Options. 

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