Overview: A new generation of liquid pressure thermometer and the resulting development of a series of temperature meters, overcoming a single performance of the original instrument, and the poor reliability of large-size packages the shortcomings of temperature components will be reduced to the original size of 1 / 30 or 1 / 60, creativity Resistance to thermal sensors will be installed in the temperature measurement devices and to achieve the integration of the electrical and mechanical functions of temperature measurement. Formed a liquid pressure thermometer for the basic Thermometer EasTone, explosions, earthquakes, anti-corrosion, electrical contacts, temperature, etc.-signal transmission, temperature instrumentation serialization. This series of explosion-proof liquid pressure and temperature instrumentation WTZ series-pressure liquid thermometer ordinary working principle of the same, the difference is WTZd use of lightweight aluminum alloy shell instrument, the instrument may be sparks, the circuit and arc of explosive Case separating gas mixtures, so as to achieve the purpose of flameproof. Product performance with BG3836.1-2000 "explosive gas explosion-proof electrical equipment with the environment Part 1: General requirements" and GB3836.2-2000 "explosive gas explosion-proof electrical equipment with the environment Part 2: flameproof electrical equipment" d " "criterion. Ex mark for Exd I, Exd II BT4, Exd II CT3, Exd II AT5, Exd II BT5, Exd II CT5. WTZ-288 (287,286) of the thermometer is in contact WTZ-280 single-table on the basis of instructions to install a contact device by adjusting the structure, when the measured temperature rise or fall to the setting, the thermometer will be an open or Commissioner signal used to control, regulate or alarm measured temperature.