Determine whether the following measurements are intrusive o

Determine whether the following measurements are intrusive or nonintrusive. You may need to research the details of the measurement process. Measuring amperage of current in a wire using clamp-on ammeter. Measuring flow of fluid in a pipe by installing an orifice meter in the pipe. Measuring composition of gases in an exhaust using a device which optically measures transmitted infrared radiation. Determining the surface temperature of a pipe using a thermometer that measures the emitted infrared radiation. Rotational speed of a shaft indicated by a strobotachometer.

Solution

a) Intrusive : as the ammeter causes loading

b) Non Intrusive: as the orifice meter does not affect the flow

c) Non Intrusive as it measures infrared radiation

d) Non intrusive as the thermometer is not in contact

e) Non Intrusive