Introduktion til bimetal termometre til industrielle brug
The main component of industrial bimetallic thermometers is a multi-layer metal sheet composed of stacked together. An instrument that can automatically and continuously record temperature changes. To improve temperature measurement sensitivity, a metal sheet bimetallic thermometer is usually made into a spiral coil shape. When the temperature of multi-layer metal sheets changes, the expansion or contraction of each layer of metal varies, causing the spiral coil to roll up or loosen. Due to one end of the spiral coil being fixed and the other end being connected to a freely rotating pointer, the two metals undergo different volume changes during temperature changes, resulting in bending. Fix one end and the other end will shift with temperature changes, with a displacement close to a linear relationship with temperature. The self recording system consists of a self recording clock and a self recording pen. The self recording pen is connected to an amplification lever and controlled by an sensing element. Therefore, when the bimetallic sheet senses a temperature change, the pointer can indicate the temperature on a circular dividing scale. The temperature measurement range of this instrument is 200~650 degree , and the allowable error is about 1% of the two steps of the scale. such
Termometre og stang formet væske glas termometre har lignende anvendelser% 2c men kan bruges under betingelser med højere mekanisk styrke krav.
