| 摘要 |
<p>PURPOSE:To increase the accuracy of gas concentration control by providing a blower-controlling means which stops the blower after the gas concentration reaches a prescribed level in the chamber and driving the blower for a certain time every a certain interval and a monitor to detect the gas in the chamber, after start of operation. CONSTITUTION:When the gas atmosphere reaches the setting values in the storehouse and the gas monitor detects the start of storage, the blower controller 44 stops the blower 14. Then, the inner timer and counter are reset, and the timer drives the blower on the passage of 1hr. Further, after 1hr and 1min, the timer allows the gas monitor 45 to work and input the data of gas concentration 3 times, when the blower 14 to stop.</p> |
