Determine whether the following measurements are intrusive or nonintrusive. You

Question

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.

Explanation / Answer

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

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