Final control element

What are the four main process variables in instrumentation specialization?

• Weight, Length, Time, Resistance

• Pressure, Temperature, Flow, Voltage

• Speed, Volume, Density, Current

• Pressure, Temperature, Flow, Level

What are the two main parts of a control valve?

• Gauge and Transmitter

• Actuator and Valve Body

• Piston and Diaphragm

• Disc and Plug

What does Fail-Safe condition of a valve refer to?

• The type of valve body design

• The type of power used to operate the actuator

• The position of the valve in the event of air/signal failure

• The type of valve closure member

What are the three types of Fail-Safe condition based on the position of the valve in the event of failure of air supply?

• Hydraulic, Electric, Pneumatic

• Linear, Rotary, Fail Lock

• FTO, FTC, FL

• Open, Close, Lock

What is the part of a control valve which converts the signal from the controller into necessary force used to position the valve closure member?

• Actuator Sizing

• Stroke Time

• Pneumatic Actuators

• Valve Positioners

What is the range of pneumatic pressure required to begin moving the stem to fully stroke the actuator over the entire travel length?

• Bench Set

• Flow Characteristics

• Full Stroke Test

• Partial Stroke Test

What is the offline diagnostic test performed on valves over its entire travel length in steps to detect any abnormalities?

• Partial Stroke Test

• Full Stroke Test

• Bench Set

• Flow Characteristics

What is the online diagnostic test performed on a valve to detect any failure modes without disrupting the process?

• Bench Set

• Full Stroke Test

• Flow Characteristics

• Partial Stroke Test

What is the primary purpose of a Pressure Safety/Relief Valve?

• To regulate the air pressure and remove contaminants

• To change an electrical current signal to a proportional pneumatic output

• To protect a pressurized vessel or system during an over pressure event

• To identify the open or close position of the valve

What is the closure member of the butterfly valve?

• Gate

• Ball

• Disc

• Plug