Process Control Quiz 2

All these pictures are flow measuring device except:

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In pneumatic valve, HOT AIR is held in a reservoir through a compressor, once it strong it will push the diaphragm down. In turn, causes the VALVE STEM to press downwards and close the valve

• TRUE

• FALSE

Below are main pneumatic components except:

• Compressor

• Air Cylinder

• Actuator

• Tank

Name the missing part of the valve?

• Actuator

• Positioner

• Gate Valve

• Valve Body

What is the function of PLUG in the picture?

• Regulate the valve

• Open and close valve

• Hold pressure in the valve

• Receive pressurized air from compressor

What is the types of this valve actuator?

• Pneumatic Actuator

• Hydraulic Actuator

• Electric Actuator

• Hot Air Actuator

What is the function of the Valve Positioner?

• Instrument that receive electrical signal then convert it into pneumatic signal

• Instrument that help improve control by accurately positioning a control valve actuator in response to a control signal

• Instrument that use to calibrate the position of air supply into the compressor

• Instrument that help improve control by accurately positioning a sensor for flow measurement

Which one is the Ball Valve?

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There are two types of valve action. This type use to prevent flow when no pneumatic air supply. The action may prevent hazardous chemical from endangering lives

• Air-to-Open

• Air-to-Close

This types of pump is use dosage flow to control its flow. Normally it is use to regulate dosage of acid in tank

• Diaphragm Pump

• Peristaltic Pump

• Centrifugal Pump

• Solenoid Pump