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  • Lufft VENTUS Ultrasonic Wind Sensor Proven for Offshore Operation
    The Lufft Ultrasonic Anemometer VENTUS-UMB successfully completed the test at the International Technical Inspection Agency TUEV SUED and now has the Protection Class IP68. This confirms officially that the sensor is one of a few Ultrasonic Anemometers, protected from infiltration of dust as well
  • The Evolution of Thermal Mass Flow Meters
    Thermo-Systems, Inc. (TSI) began in its founder's basement in 1959, with a cooled-film anemometer designed for transient measurements in high temperature fluid flows. This led to TSI's hot-film and hot-wire anemometers, the first commercial products of this type. These immersion-type devices were
  • Measuring Air Flow
    Building Automation Systems are often required to measure the actual air flow in air handling systems. Although there are many ways to measure air flow, the two most commonly used with BAS systems are the hot wire anemometer and various devices which measure the velocity pressure of the air. Once
  • LBA differential pressure sensors - high immunity to humidity
    In this application note First Sensors LBA differential pressure sensors are experimentally compared to other sensors which use the same (thermal-anemometer-based, non-membrane) sensing principle, where differential pressure is inferred from a gas flow through the sensor. In high-humidity
  • Advances in Thermal Dispersion: Mass Flow Meter Accuracy (.pdf)
    Thermal flow measuring technology has come a long way since the introduction of thermocouple technology and early hot wire anemometers. Thermal technologies depend on heat transfer and traditionally operate on differential temperature measurements between two temperature sensitive materials
  • LBA differential pressure sensors - high immunity to dust contamination
    In this application note First Sensors LBA differential pressure sensors are experimentally compared to other sensors which use the same (thermal-anemometer-based, non-membrane) sensing principle, where differential pressure is inferred from a gas flow through the sensor. With dust in the air flow
  • Advances in Thermal Dispersion Mass Flow Meter Accuracy (.pdf)
    Thermal flow measuring technology has come a long way since the introduction of thermocouple technology and early hot wire anemometers. Thermal technologies depend on heat transfer and traditionally operate on differential temperature measurements between two temperature sensitive materials
  • Shedding New Light On Tiny Packages
    Welds 0.1 mm wide? No problem. Recent laser transmission welders join plastic components with unprecedented precision. These micrographs show seams made with the mask welding procedure. The gray shaded area is welded. A MEMS silicon mass flow sensor contains a highly sensitive thermal anemometer
  • 100 years of flight - Keep them flying : Navigation
    A pilot's priorities are to aviate, navigate, and communicate, in that order. Here's a look at some of the devices developed over the last 100 years that help pilots do all three. When the Wright Brothers first flew, their plane carried an anemometer to measure wind speed, a revolution counter
  • Justifying a continuous contamination monitoring system
    anemometer measurements would be taken near the face of HEPA filters to confirm linear discharge velocities, verifying that the room air recirculation system is functioning correctly. This would involve taking a large number of measurements and so would be done infrequently. Often such a survey would only

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