Note: it is important that the differential gauge needle drops slowly.
注意:重要的是,差压计的指针要慢慢下降。
The differential gauge forging can be made by general open die or horizontal split precision closed die.
差压计锻件可以采用普通开式模锻成形和可分凹模多向闭塞精密模锻成形。
Caution: to prevent freezing, hold Test Kit vertically to drain differential gauge and hoses prior to placing in case.
警告:为了防止冻害,在放置到箱子内之前,垂直握住检测组件,将压差表和软管内的水排放干凈。
Slowly open bleed 「b」 until differential gauge rises to 2 PSI and close.
慢慢开启排气「B」直到压差表上升到2P si为止,然后关闭。
Particle filters should include (or pressure differential gauge display), so as to explain when should change the filter medium, when filter service life to also shall be replaced.