The combustible gas detection alarm (hereinafter referred to as the instrument) constituted by the detector probe and alarm (host), widely used in the oil, gas, chemical and other industries, the presence of combustible gas to detect leaks of dangerous places, to ensure personal and property safety. But as disaster prevention equipment, in our day-to-day management did not get enough attention, improper management, the management is not in place of the phenomenon have occurred. Therefore, I address this situation to talk about their own views and opinions, for everyone to explore. Select instrument instrument proof category level, the group must comply with the scene of explosive gas mixtures class level, the group's requirements, shall not be allowed to exceed the Ex-mark environment, otherwise not achieve explosion-proof. Instrument Selection formal manufacturers, advanced technology products, sensitive and reliable, and meet the appropriate environmental requirements should be considered. 2 the height of the installation position of the mounting position of the instrument should be considered the density of the gas to be measured, the air density is less than the gas to be measured, the detection probe should be installed at the location of the leak points above about 1m; density greater than air to be measured gas detector probe should be installed below the leak location and position above the ground about 0.5m; density of the air close to the measured gas, the detector probe should be as close as possible to the leak. Open-air installation of the probe and the choice should be based on the measured density of the gas installation height, pay special attention that the probe of the detector should be installed on the downwind side of the dominant wind direction. Probe installation and commissioning of the detector must be installed breathable waterproof cover to prevent rainwater from entering the damaged probe. Breathable waterproof cover should be cleaned regularly to ensure that the the normal measured gas into the detector probe. 3. Installation environment for the detector probe installed in the open air, the temperature and humidity factors must be considered, in line with the instructions for use of the instrument to ensure that environmental temperature and humidity. Place of installation of the instrument should also take into account the halogen element compound instrument, this will keep the detector sensitivity is reduced, shortening the life of the instrument but also serious loss of detection function. Number of installations for the presence of flammable gas leak may be large, medium-sized establishments, at intervals (10 ~ 20) m should be set in accordance with the relevant provisions of the detection points. Should be set up to detect closed space (such as pumping stations, storage bottle Room) point. When the gas species of the scene environment is complicated, the number of detectors, the model also should be relatively increased. If the detector does not comply with the environment of the scene, not only can not be detected in the ambient gas concentration, and also likely to cause the failure of the detector and damage. Regularly check should move a "self-test key instrument for self-test function, the weekly check indicates whether the alarm system is normal; visual inspection once a week, check the joints and movable parts, monitor and control knob check failure lights, check the explosion-proof seals and fasteners, check the probe for blockage, check the waterproof situation. For direct use of the lighter gas and the detector probe contact to the behavior of the reliability of the test instrument, I believe that is defective, so easily lead to damage to the gas detector probe, the detector sensitivity is reduced or malfunctioning. 6 the cycle parity check instrument to be used by metrological department certified standard gas match with the measured gas. Pass into the instrument zero gas concentration of 0% LEL, then pass into the different concentrations of standard gas to be showing the value of stable, adjust the instrument to the standard indication. Other indicators should be consistent with the requirements of the appropriate national metrological verification. Calibration cycle is generally not more than one year. It should also be noted For apart debugging verification process, must wear a portable instrument detects the surrounding environment in the presence of combustible gas, and the use of explosion-proof walkie-talkie guide debugging. For your safety, all in Shandong Xiang Electronic Technology Development Co., Ltd. www.qitibaojing.net.cn