Dust particle counter use should note the following: 1, when the inlet pipe is covered or blocked, don't start the counter 2, should be used in a clean environment, in order to prevent the damage of laser sensor 3, it is prohibited to extract contains oil, corrosive gas, and don't measure is likely to respond to a mixture of gases, Such as hydrogen and oxygen) 。 These gases can also produce explosion in the counter. Measure the gas with the manufacturer for more information. 4, no high pressure relief devices ( Such as high pressure diffuser) Don't sampling of compressed air, all the counter is designed to operate at a pressure. Instrument working position and sampling mouth should be in the same pressure and temperature and humidity environment, guarantee the normal work of the instrument. 5, water solution or other liquid from the inlet tube into the sensor. 6, sampling, avoid sampling from polluted by the gas counter itself discharged gas. 7, the connection is external printer or connect the external temperature and humidity sensors, please turn off the counter; When performing the print operation, on the printer must have the paper, otherwise it will damage the print head. 8, when handling, should put light moving light, less vibration and shock. Especially for the table of the particle counter, more carefully, in order to avoid damage to internal components.