Overcoming temperature effects in diameter measurement

摘要

Laser measurement of product diameter has always been highly accurate. However, in non-thermally controlled environments, such as a workshop or production line, there was always the chance of incorrect readings due to thermal expansion. Small fluctuations in the ambient temperature could affect both the laser gauge and the part, and therefore the measurement. Now, thanks to Scantron's 'NO-VAR' (No-VARiation) technology, this problem can be overcome, even in non-thermally controlled environments. The thermal co-efficient of the gauge and the part are determined and then stored in the instrument's memory. Sensors installed in the gauge then measure the ambient temperature and smart software compensates for temperature changes and adjusts the reading accordingly.