Whitepaper: The Advantages of Using an Electronically Commutate Motor in Biosafety Cabinets |
(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)
Labconco Corp.
8811 Prospect Ave.
Kansas City, MO, 64132 2696
USA
Press release date: January 19, 2010
The PurifierŪ LogicŪ Biosafety Cabinet has a patent pending process for controlling airflow. At the center of this process is its Electronically Commutated Motor (ECM), which precisely monitors and controls airflow through the cabinet without the need for sensors. While there are other manufacturers using the ECM, none of them take advantage of the motor's ability to control airflow without the need for unreliable sensors.
The National Sanitation Foundation (NSF) tests and approves Class II biosafety cabinet designs to ensure both a sterile work area and user protection. To become NSF listed a biosafety cabinet's design must conform to ANSI/NSF Standard 49, which outlines acceptable velocities for both inflow and downflow. As the HEPA filters in a biosafety cabinet become loaded with particles and the static pressure rises, the airflow through the cabinet gradually decreases. Routine adjustment and recertification of the cabinet's blower is required to ensure that the air velocity is within the range specified by ANSI/NSF 49.
Before the introduction of the Logic, biosafety cabinets monitored air velocity using airflow sensors(s). However airflow sensors have their limitations. They are susceptible to temperature changes, humidity, and dust particles. In addition, the accuracy of the airflow sensors commonly used in biosafety cabinets is typically only within 5%.
Discover more facts about the ECM and what they can mean to you by downloading the ECM white paper at www.labconco.com or call 1-800-72-0031 and ask for it to be sent to you.
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