What is the appropriate temperature and environment for drying equipment using a vacuum oven?

Using a vacuum oven for drying equipment requires specific conditions to effectively remove moisture while preventing damage to sensitive components. The correct choice specifies a temperature of 130°F at 26 inches of mercury.

This option is effective because maintaining a lower temperature (130°F) helps to prevent overheating and potential thermal degradation of the materials being dried. The pressure of 26 inches of mercury aligns well with optimal vacuum conditions, which is essential for evaporating moisture at lower temperatures. The vacuum environment reduces the boiling point of water, allowing it to evaporate more readily without relying on excessive heat.

In contrast, the other options involve either higher temperatures or pressures that do not align with the ideal conditions for drying equipment in a vacuum. Higher temperatures can potentially harm electronic components, while unsuitable vacuum levels may fail to achieve the necessary moisture removal. Thus, the combination of a moderate temperature and an effective vacuum level in the correct choice ensures that the drying process is both efficient and safe for the equipment.