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a. Highlighted OLED active-luminescent display, with clear and intuitive display;

b. TDLAS (Tunable semiconductor laser absorption spectrum) technology is used to measure without background gas cross interference;

c. The multiple reflection optical path design provides a longer effective optical path, thereby improving the measurement accuracy and precision;

d. Equipped with a polytetrafluoroethylene filtration device, it filters out impurities while maintaining the optical signal transmittance, and is easy to clean and replace;

e. The mirror heating function prevents the adhesion of viscous substances and keeps the mirror surface clean;

f. Automatic temperature and pressure compensation could eliminate the impact of environment temperature and pressure changes on the measurement accuracy;

g. 40 thousand pieces of historical data can be stored automatically, enabling user to read historical data freely;

h. The instrument allows multi-point fractional liner calibration, meeting the need for an accurate measurement of oxygen content among the full range;

i. Flameproof design has high safety factor;

j. The structure is compact, with excellent reliability and stability, fast response speed, and is capable of real-time reflection of the measured gas concentration;

k. In explosion-proof places, the menu can be set by isolated magnetic pen, which is easy to operate on site;

l. Standard DN65 PN1.0 flange is installed by butt joint, which is quick and convenient to install.