Roughing pump
id:
roughing-pump-300-4920711
title:
Roughing pump
text:
A roughing pump is any vacuum pump used to initially evacuate a vacuum system, as a first stage towards achieving high vacuum or ultra high vacuum. The term "roughing pump" derives from the vacuum range it works in, "rough vacuum", above 1x10−3 torr. Pumps that operate in the high vacuum ranges typically don't operate, or only operate inefficiently, at atmospheric pressures, whereas pumps that work efficiently at atmospheric pressure usually cannot produce a vacuum lower than approximately 1x10−
brand slug:
wiki
category slug:
encyclopedia
description:
original url:
https://en.wikipedia.org/wiki/Roughing_pump
date created:
date modified:
2020-10-01T22:55:54Z
main entity:
{"identifier":"Q7370902","url":"https://www.wikidata.org/entity/Q7370902"}
image:
fields total:
13
integrity:
13