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  • 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
  • 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
  • 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
  • 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
  • Justifying a continuous contamination monitoring system
    , a pressure gauge or inclined tube manometer would be permanently installed on an outside wall. Once a day or once a shift the pressure would be read and the reading recorded. In this way, the cleanroom would be audited on a sampling basis. Other examples can be cited. Rotating-vane or hot-wire

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