| 摘要 |
PROBLEM TO BE SOLVED: To provide a constant flow rate sampling device of a gas capable of simply and automatically performing the constant flow rate sampling of the gas in an accurate amount by anyone. SOLUTION: The constant flow rate sampling device of the gas has (I) a gas flow introducing part 1, (II) a gas flow rate adjusting means 2 equipped with a gas flowmeter to adjust the flow rate of the gas, (III) a gas total flow rate adjusting means 3, which is constituted so as to measure/monitor the total flow rate of the gas and equipped with the gas flow cutting-off valves 3a and 3b installed on the gas flow introducing side and gas flow lead-out side of the gas flowmeter, a data input part 3ci for setting/displaying the data related to the desired total flow rate of the gas, a control part 3cii which compares the data related to the total flow rate of the gas monitored by the gas flowmeter and the data related to the desired total flow rate of the gas set by the data input part to simultaneously control the operations of both gas cutting-off valves and a meter main body 3c equipped with the gas flowmeter 3ciii for monitoring the total flow rate of the gas, and (IV) a gas flow lead-out part 4. COPYRIGHT: (C)2007,JPO&INPIT
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