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  • Gas concentration measurement with thermal flow sensors
    Several different sensor solutions exist to measure gas concentrations by means of spectroscopy, electrochemical reactions, thermal conductivity, ultrasonic waves and other methods. In such cases where gas flow and concentration measurement are required simultaneously, a one-sensor-measures-all
  • Oxygen Permeation Measurements in Bottles Using OxySense Non- Invasive Oxygen Measurement Instrumentation (.pdf)
    is collected by this gas and is taken to a sensor that measures the concentration. The permeation tests can last several days during which gas has to flow continuously while the instrument is measuring continuously. This measurement process uses considerable amounts of gas throughout the test and does
  • General Information for TGS Sensors
    to the adsorbed oxygen, resulting in leaving positive charges in a space charge layer. Thus, surface potential is formed to serve as a potential barrier against electron flow (Figure 1). Inside the sensor, electric current flows through the conjunction parts (grain boundary) of SnO2 micro crystals. At grain
  • Medical Device Link . Micromachined Pressure Sensors Reach a New Low
    . In the past, most designers relied on capacitive strain gage and micromachined silicon capacitive and micromachined flow-through technologies when designing low-pressure sensors. While many sensing technologies can measure flows within the necessary ranges for medical applications by using down-ranged
  • Dilution Flow Panels for Combustible Gas Monitoring
    As the name implies, catalytic combustible sensors detect combustible gas presence using a catalytic bead or coil, producing. an electronic signal that is proportional to the gas concentration. This sensor type requires that combustion take place for the. signal to be generated, necessitating
  • Medical Device Link .
    such as spirometers, oral drug delivery systems, and oxygen therapy equipment all involve pressure sensing of a fluid in some manner. Now, solid-state pressure sensing devices, which can provide more functionality than a simple switch, are taking the place of mechanical sensors in this product class
  • Feed Forward Control (.pdf)
    This case history describes how one company used the CalorVal BTU Analyzer with an oxygen sensor and flow meter to complete their control loop system for optimizing fuel/air mixtures.
  • MICRO:
    and students. the 40 most popular products of 2000, including wafer shipping boxes, transport robots, lithography tools, copper-cleaning products, mass-flow controllers, wafer dryers, copper-stripping systems, and an array of valves, regulators, sensors, pumps, and detectors. Silicon Valley plugs

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