Product Overview: 
 In the vacuum state, the acquisition of Gas Drainage pipe gas samples Luneiwasi special tools. 
 2, Technical parameters: take the air negative pressure: 0 ~ 85KPa; Weight: 1.3kg 
 3, the product manual: 
 First, use the FW-2 high-vacuum gas to take, is used for drainage gas pipeline system, collecting the kind of methane gas in the vacuum state, special tools. 
 Second, the structure of this take has inlet connector, outlet connector, valve stopper, rod, piston, pump and seals and other components. 
 Three. Use 
 A. To take gas samples should be taken to the device side air interface and the orifice flowmeter inlet end of connection measurement mouth; the top to blow off steam and interface with Gas Detector connection. 
 Two. Exhaust side air connector rubber plug valve automatically opens, the high negative pressure gas flow into the pump. 3. Cheer when should quickly push the piston, prompting the top outlet connector valve is opened, the inner core side of the inlet connector within the first plastic plug valves automatically shut down the gas to flow into the high density gas within the test device, which measured the gas concentration. 
 V. Cautions 
 A. Before use, check the rubber plug valve seals, if damaged leak, should be replaced. 
 Two. Latex tube should be approximately equal in length with a copper core core valve. 
 3. The piston and pump regularly coated with Vaseline to prevent rust.