SIKA the structure and working principle of the thermometer

The structure of the SIKA thermometer is by the glass rod, the upper and lower body of three parts. Is the upper aluminium by polishing or sandblasting and anodic oxidation into gold, to uncover her nakedness for copper, when high temperature iron material is qualitative. Glass rod is SIKA thermometer temperature sensing element. Body length is generally have three, respectively is 110 mm / 150 mm / 200 mm, installation has two kinds of straight and curved type; SIKA thermometer in blue or red organic thermal fluid filling. Above 300 c, filled with mercury. SIKA the working principle of the thermometer is the use of liquid temperature measuring principle of heat bilges cold shrink effect: when the temperature changes, the glass ball in the liquid volume expansion or contraction, will happen to change into the liquid column height in capillary, which indicates the temperature change.