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installation_fp_sci [2017/03/06 12:26] pereira [Vent focal-plane chamber] |
installation_fp_sci [2017/03/06 12:28] pereira [Vent focal-plane chamber] |
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* Gently open the manual venting valve until the pressure displayed in the Pirani Gauge (see figure below) increases by ~1 torr every 15 seconds (see figures below) | * Gently open the manual venting valve until the pressure displayed in the Pirani Gauge (see figure below) increases by ~1 torr every 15 seconds (see figures below) | ||
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- | * Wait until the chamber is vented (few hours). The **I261PG** Pirani Gauge should read atmospheric pressure. The window **VENT STATUS** in PanelMate should display "VENT VALVE OPEN". The window **PUMPDOWN STATUS** should display " | + | * Wait until the chamber is vented (few hours). The **I261PG** Pirani Gauge should read slightly above atmospheric pressure |
==== Open focal-plane chamber ==== | ==== Open focal-plane chamber ==== |