single-channel all-steel fume hood variable air volume butterfly valve control:
       1. Use SM6 surface wind speed sensor to measure the surface wind speed of the equipment in real time and feedback control the fume hood exhaust valve;
       2. To maintain a constant wind speed on the surface of the equipment, the system response time < is 3 seconds.
       Dual-way all-steel fume hood variable air volume butterfly valve control:
       1. Uses SM6 surface wind speed sensor and SM2 displacement sensor to simultaneously detect the adjustment window displacement and real-time surface wind speed;
       2. Quick response control through displacement measurement, within 2 seconds of <;
       3. Adjust the precision high-pressure independent butterfly valve to the preset exhaust volume position;
       4. After the adjustment window stabilizes (Boost Duration can be set, such as 3 seconds), switch to face air speed control to deal with equipment turbulence and maintain the leakage rate of the fume hood;
       5. System response time <2 seconds.
       adaptive all-steel fume hood variable air volume butterfly valve control:
       1. Use SM10 area status sensor to detect whether there are operators in front of the equipment;
       2. When there are no operators in front of the equipment, reduce the surface wind speed setting of the fume hood to 0.3m/s. Once someone is detected, quickly adjust the surface wind speed to 0.5m/s;
       3. Significantly reduce equipment energy consumption.