Selection of liquid level gauge used are: glass level gauge, level gauge glass, magnetic level gauge and colored quartz tube level gauge and so on. Below this level gauge the scope of several advantages and disadvantages to do a brief introduction: (1) level gauge glass: mainly used for transparent or more transparent medium, its nominal level gauge slightly higher than the glass, up to 6.3MPa, the highest temperature reached 250 ℃. It not only has a simple structure, observed intuitive, easy installation, simple maintenance, etc., and the level gauge the scope is broader than glass. But it also has drawbacks similar to the glass tube level gauge, namely: indicates poor resolution; small measuring range, the measurement range is exceeded to the use of modular glass level gauge, large volume, heavy, and there was observed blind; and so easy to break. (2) magnetic level gauge: commonly used in liquid density of not less than 0.45g / cm3, the main medium is transparent and translucent quartz tube level gauge, but sometimes it can also be used to detect the level of crude oil and other high viscosity of the medium, The measurement range than glass level gauge and level gauge glass is much larger, can be up to 7m, and the applicable nominal reached 16MPa, also reached the temperature range -40 ℃ ~ 300 ℃. In addition to the advantage of intuitive readings, simple structure, easy to install, easy to maintain, but also than the glass (or board) level gauge more resistant to corrosion, and explosion-proof color quartz tube level gauge, but due to the large measurement range, can not tank height restrictions, less prone to blind spots were observed. But it also has the disadvantage corrosion quartz tube level gauge, level gauge barrel in solid impurities and magnetic impurities into when the float will cause jamming and reduced buoyancy, it should be cleaned regularly led tube, remove the inner tube of sediment contaminants; and mixed media measurement ineffective. (3) color quartz tube level gauge: He is a glass tube (or board) level gauge replacement products. For water, oil, acids and other media, especially for difficult to distinguish the two hybrid medium level, such as oil and water mixed liquids and apply liquid level detection and heavy high viscosity of the medium. Its advantages are: gas, liquid display clear, especially for long-distance observation and patrol at night; no blind spots, good sealing performance, high temperature, high pressure, anti-sticky, light weight, long life and so on. Disadvantages are: small measuring range, does not apply to some high-level measurements. UCS series of color quartz tube level gauge 3.1 interface basic parameters of center distance: 500 quartz tube level gauge manufacturers, 800,1100,1400,1700,2000 (mm) or user-determined 3.2 Working Pressure: 1.6,2.5,4.0,6.4 , 8.0,10.0 (Mpa) 3.3 Operating temperature: ≤ 450 ℃ 3.4 interface flange standard: JB82-59 DN25 convex flange 3.5 heating system pressure: 1.0 Mpa 3.6 with thermal interface: ZG 1/2 "3.7 port ball valve automatically sealing pressure: ≥0.2 Mpa tricolor quartz tube level gauge gauge _ _ quartz tube technology offered by Changzhou hundred to one hundred to one hundred Technology Co., Ltd. Changzhou Technology Limited (www.czbckj.com) strong, credible. In Changzhou, Jiangsu chemical instrumentation industry has accumulated a large number of loyal customers. The company better work attitude and continuous improvement will lead one hundred innovative ideas into technology and you hand into the brilliant, for a better future!