Hardware Reference
In-Depth Information
Figure 9.16
Output waveforms produced by a typical shaft encoder
Figure 9.17
Shaft encoder signal conditioning for measurement of rotational
speed
These latter devices incorporate a rotating vane and are suitable for use with
flow rates ranging from 3 l/h to 500 l/h. Typical outputs range from 24 Hz at
10 l/h to 52 Hz at 20 l/h.
Optically isolated inputs
In a number of applications, it may be necessary to provide a high degree
of electrical isolation between the source of a digital signal and its eventual
