Negative Pressure Weighing Booth

Labtron’s negative pressure weighing booth is a stainless steel Class?A clean enclosure designed to maintain the working area at slightly lower pressure than the surrounding room. It uses vertical HEPA downflow to sweep airborne dust downward and away from the operator. Approximately of total airflow is exhausted to create and maintain negative pressure. This ensures containment of hazardous powders and prevents escape into the environment. The booth delivers multi-stage filtration including G4 primary, F8 medium, and H14 HEPA filters for particle removal. Components include a magnetic return-air plate, flow equalizer mesh, and UV lamp integration. The modular design supports on-site assembly and ergonomic operation. Real-time differential pressure and airflow sensors integrated in optimize control and safety.

Labtron supplies advanced models of Negative Pressure Weighing Booth. Air is drawn through a centrifugal fan via G4 ? F8 ? H14 filters, then diffused downward through a flow equalizing mesh. Approximately 90% of filtered air recirculates; is exhausted to sustain a negative pressure gradient. Real-time wind-speed and differential-pressure sensors feed data to a PLC control system, adjusting fan speed to stabilize airflow. Acceptance testing involves calibrated anemometer readings at five points across each membrane, averaging with point deviation. Exhaust ratio validation ensures of supply volume is removed. A differential pressure gauge signals when filters reach preset resistance and triggers replacement alerts.

Labtron supplies advanced models of Negative Pressure Weighing Booth. Typical specifications include airflow, HEPA filtration efficiency for particles, and negative-pressure differential of 5 to 15Pa. Illumination within the booth is maintained above 300–400lux, with noise levels kept. Cleanliness is maintained at ISO5 under static conditions. Power consumption ranges from around 350–550W, depending on model and airflow volume. Standard working area dimensions vary by model. These parameters ensure containment integrity and weighing precision.

Safety features include differential pressure alarms, emergency stop buttons, UV germicidal lamps, and real-time monitoring of airflow and filter performance. Anti-static work surfaces, ergonomic height-adjustable tables, and arm ports enhance operator comfort and precision. Operators must don PPE lab coats, gloves, masks and follow lockout/tagout procedures during maintenance. Emergency shut-off halts fans but keeps essential systems active. Access panels are interlocked to prevent operation during servicing. Rounded corners, smooth SUS304 surfaces, and quick-release filter plates enable easy cleaning and decontamination.

Labtron supplies premium models of Negative Pressure Weighing Booth. Before use, the booth should run for 15–20 minutes to stabilize airflow and pressure. Operators must wear full PPE and avoid blocking intake or exhaust vents. Routine validation includes airflow and pressure testing at regular intervals and documentation of instrument readings. Filters should be replaced when pressure drop exceeds thresholds indicated by the PLC. Cleaning protocols prohibit water near electrical parts; use disinfectants on metallic surfaces only. Emergency-stop use restricted to actual emergencies, not routine operations. Maintenance technicians must be professionally trained and observe power-off delays before servicing.