Figure 11-3.—Duplex Bourdon-tube pressure gauge.
Differential pressure may also be measured with
Bourdon-tube gauges. One kind of Bourdon-tube
differential pressure gauge is shown in figure 11-6. This
gauge has two Bourdon tubes, but only one pointer. The
Bourdon tubes are connected in such away that they are
Figure 11-4.—Bourdon-tube vacuum gauge.
Figure 11-5.—Compound Bourdon-tube gauge.
Figure 11-6.—Bourdon-tube differential pressure gauge.
11-3
