The behaviour of the constant-temperature hot-wire anemometer as the resistance ratio becomes very low is examined in terms of the static and dynamic response. It is shown that a constant temperature anemometer may be used to measure temperature fluctuations but its usefulness is limited by the nonlinearity of the sensitivity. Systems which employ an amplifier with a frequency-dependent gain give rise to a step change in the sensitivity of the response at low frequencies. This step may be significant at all resistance ratios but generally increases as the resistance ratio decreases.
|Original language||English (US)|
|Number of pages||6|
|Journal||Journal of Physics E: Scientific Instruments|
|State||Published - Dec 1 1980|
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Physics and Astronomy(all)