EXPLORATION OF MEASURING VELOCITY WITH CONSTANT TEMPERATURE ANEMOMETER SYSTEM UNDER LOW TEMPERATURE CONDITION

The calibration principle of Constant Temperature Anemoneter（CTA） and the amending of the calibration formula are introduced. The measuring velocity in a sealed system in the low temperature environment is emphasized. In order to get the velocity in the low temperature environment,the response curve of the C TA probe is required, so acquiring the exact response curve becomes the base of measuring velocity with CTA in the low temperature environment. A set of experiment systems is introduced and some results are given.