Process control Terminology 3

A ____________ is made of two dissimilar metals and generates a small voltage when exposed to changing temperatures.

• RTD

• Thermocouple

• thermistor

• Thermowell

A temperature sensing device made of multiple thermocouples connected together in series is a _____________.

• Thermowell

• Thermopile

• Thermocouple Pyrometer

• Thermistor

Which of these scales measures temperature with 0 on the scale starting at absolute zero?

• Fahrenheit

• Celcius

• BTU

• Kelvin

A ___________ flow meter is a flow measuring device which uses a disc that wobbles at a consistent rate when exposed to fluid flow

• Positive displacement

• Turbine

• Nutating disc

• Coriolis effect

In a fluid flow system, why is a straightening vane is used?

• Create laminar flow for downstream flowmeters

• Create a pressure difference for a flow meter

• Create vorticies for a vortex flow meter

• Create a straight line using a vane

You typically read a rotometer using the the floats _________

• Top

• Bottom

• Widest Part

A mass flow meter differs from a typical flow meter in that it____________

• Measures the velocity of the fluid

• Measures the volumetric flow of the process

• Considers the density of the fluid when taking readings

Systematic error or offset introduced into a measurement system is called _________

• Drift

• Dead zone

• Precision

• Bias

___________ is the dependent variable that is to be controlled in a control system

• Final Element

• Process Variable

• Setpoint

• Instrumentation

On a P & ID diagram a line with an occasional two dashes indicates a __________ line.

• Pneumatic

• Electric

• Signal

• Process