| 摘要 |
<p>A system for filling gas cylinders with a gas mixture having a desired gas composition which includes (a) a gas conduit whose inlet end is connected to two or more gas component supply lines, each provided with a flow adjustment device, and whose outlet end is connected to a gas cylinder filling system, and which is equipped with a gas analyzer, a cumulative gas flow measuring device and, upstream of the gas analyzer, a gas mixing device; and (b) a controller which ha s provision for receiving signals from the flow measuring device and the gas analy zer and for sending signals to each flow adjustment device. A method of filling gas cylinders with given quantities of the gas mixtures which includes cumulatively measuring the quantity of gas flowing through the conduit, periodically analyzin g the gas mixture flowing through the conduit, periodically sending cumulative gas flo w information signals and gas analysis signals to the system controller, and periodically sending flow adjustment signals to the flow adjustment devices to minimize the difference between the actual gas composition and the desired gas composition.</p> |
