Gas sampling method and device
A technology of gas sampling and gas sampler, which is applied in the direction of sampling device and test sample preparation, etc. It can solve the problems of high loss of sampling needle, difficulty in obtaining gas samples, and difficulty in sampling itself, so as to reduce equipment loss and provide accuracy , to avoid the effect of interference
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[0034] like figure 1 The gas sampler includes a sampling needle 1 and a gas collection cylinder 2, the gas collection cylinder 2 includes a sampling port (not shown in the figure) arranged at the end of the gas collection cylinder body, and one end is inserted into a suction / The exhaust push rod 3 and the secondary sampling port 4 provided on the wall of the gas collector, the secondary sampling port 4 is sealed by a sealing device (the present embodiment adopts a rubber gasket, and of course other materials with good elasticity can also be used. similar material), the sampling needle 1 is installed on the sampling port, and the hardness of the sampling needle 1 is greater than that of the explosion-proof ball in the corresponding battery. Because the positive hole of the Ni-MH battery is small, it is difficult to align, easy to stick off, and the explosion-proof ball is relatively hard, use a small, not hard sample needle to directly insert into the positive hole to sample a...
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