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  • Proportional Valve Could Improve Respirators
    Designers of ventilators, respirators, and blood pressure monitors could benefit from a new proportional pneumatic valve that reportedly offers greater air flow control accuracy. The new valve, introduced by Clippard Instrument Laboratory, Inc. (Cincinnati, OH; www.clippard.com) and known
  • Collecting and Testing Dust: Knowing Dust Characteristics Facilitates Ventilation Equipment Selection
    In 1998, both the Occupational Safety and Health Administration (OSHA) and the National Institute for Occupational Safety and Health (NIOSH) issued more stringent requirements relating to the use of respirators in plants. Though respirators are critical to shielding workers from ambient dust
  • How to Minimize Warm-Up Drift in Pressure Sensors
    Warm-up drift in pressure sensors makes their readings vary until systems reach operating temperature. It's usually of little concern. However, such drift is unacceptable in hospital respirators, spirometry equipment, neonatal monitors, and similar devices requiring high accuracy at all times
  • Proportional Valves Eliminate Design Headaches
    Proportional valves are a great alternative when an application requires more than on-off control, but not the high precision and expense of servo valves. As such, proportional valves are widely used in a multitude of applications, including the control of gas and air flow from medical respirators
  • Keeping Welders Cool
    supplied air respirators for welders to. use as cooling sources. "Previously," notes Watkins, "welders did not. have cooling systems although they often work. in very hot environments--either outdoors. or in shops without air conditioning. Our. familiarity with this marketplace told us
  • Medical Device Link . Selecting Low-Pressure Sensors for Medical Electronics Applications Lower pressure ranges in piezoresistive sensors offer medical electronics designers more options for customizing sensor solutions.
    , sensors and transducers boast pressure ranges down to 4 and 5 in. of water full scale (27.68 in. H O/psi). As a result, these sensors are ideal for applications such as respirators, ventilators, spirometers, and other instruments that require measuring very low pressures and in which the media
  • Medical Device Link .
    PC/104: Embedded Technology for Medical Electronics Development PC/104 architecture provides compact design and durability to meet the requirements of medical device manufacturers. From infant respirators to linear accelerators, a growing number of today's medical devices use PC/104 embedded
  • Proportional valves eliminate design headaches
    from medical respirators, dialysis machines, and paint-delivery and semiconductor-manufacturing systems. The beauty of the valves is the ease with which they can vary the rate of flow, with output proportional to input current. However, most such valves have several major characteristics that can make

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