Yamatake has a proven track record in offering high IAQ (indoor air quality) building systems as a leading company in the field of Building Automation facilities. We have poured our technology and expertise for improvement of IAQ into development of our Critical Environment System. By doing so, we have achieved to offer a highly reliable system that ensures safety, usability, and energy saving and besides is able to collect detailed data for effective management of laboratory environment.

By keeping the negative pressure of the air in the fume hoods through incessant exhaustion, the leakage of toxic gases is prevented. The face velocity, the airflow speed at the sash opening of hood into a work chamber is constantly kept at 0.5m/s by changing airflow volumes instantly in response to any movements of the sash with a response speed of one second or less. Both the supply and exhaust air volumes are controlled all together according to the open face area. Thus the gases generated in the process of experiments are contained in the hood, and at the same time the air balance between the laboratory room and the outside is optimally controlled. This was enabled by airflow volume control valves. This innovative type of valves play a very important role in creating safe laboratory environment that works on international levels what Dr. Nakamura called the global standards. The technology to ensure their optimum control is one of Yamatake's capabilities.

Our fume hoods are also provided with Zone Presence Sensors, which detect human presence-absence conditions in front of the hoods. When a sash is left open while the hood is unattended for a certain period of time, the airflow volumes are reduced (the optimum airflow volume control), and thereby realizing effective energy saving. For our system an efficient duct design called the 'manifold type' is available. Through a total design, well-balanced ventilation can be achieved, ensuring the safety and efficiency even when multiple hoods are used simultaneously, and thus providing carefree laboratory environment, where users do not need to feel hesitant for other users and therefore are able to concentrate on their own works very comfortably. In addition, we offer a newly developed, sophisticated management system called the CEMS (Critical Environment Management System) that monitors operating conditions of laboratory facilities and optimally controls the facilities, realizing both user safety and reduction in operational costs. With conventional systems that simply depended on exhaustion from fume hoods, users were forced to bear high operational costs due to a heavy load on air-conditioning system imposed to obtain a safe, comfortable laboratory environment. But our system can provide intelligent airflow control functions enabling reduction in operational costs through energy saving faculty. Here our long experience and accumulation of expertise as a leading company in the BA market have worked very well.