Controls/PLC 1a review F2023

Temperature is a measurement of the heat energy stored in a material.

• True
• False

Tags

Instrumentation - Temperature Measurement

The 3 methods for temperature measurement are (select all that apply):

• Thermal Expansion

• Infrared Radiation

• Electrical

• Convection

Tags

Instrumentation

-

Temperature

Measurement

Thermocouples and RTDs are examples of:

• Electrical Temperature Sensors

• Thermal Expansion Sensors

• Infrared Radiation Sensors

• Conduction Heaters

Pressure sensors can sometimes be used to measure temperature.

• True
• False

In process control, we always want the fastest possible reaction to changing conditions.

• True

• False

Thermocouples are inexpensive and fast responding. What is a disadvantage?

• The reference junction temperature must be known and compensated for

• They are difficult to manufacture

• They are not very accurate

• Their production is leading to a serious decline in the albino unicorn population

Many times, process variables are calculated using secondary or inferred measurements.

• True

• False

The 3 most common methods of measuring flow are (select all that apply):

• Positive Displacement

• Mass Flow

• Velocity

• Weight Transfer

One disadvantage of a Mag-flow meter is that it can only measure:

• Solids

• Conductive Fluids

• Non-Conductive Fluids

• Pure Water

Flow meters are only effective at measuring liquids.

• True

• False