ClipArt ETC
A McLeod gauge isolates a sample of gas and compresses it in a modified mercury manometer until the pressure is a few mmHg. The gas must be well-behaved during its compression (it must not condense, for example). The technique is slow and unsuited to continual monitoring, but is capable of good accuracy.

McLeod Gauge

A McLeod gauge isolates a sample of gas and compresses it in a modified mercury manometer until the…

A McLeod gauge isolates a sample of gas and compresses it in a modified mercury manometer until the pressure is a few mmHg. The gas must be well-behaved during its compression (it must not condense, for example). The technique is slow and unsuited to continual monitoring, but is capable of good accuracy.

McLeod Gauge

A McLeod gauge isolates a sample of gas and compresses it in a modified mercury manometer until the…