As shown in the illustration, the pneumatic...

Question 1 / 205eccefa5bacbc34ba4d487df

Question 1 of 205eccefa5bacbc34ba4d487df

As shown in the illustration, the pneumatic force balance unit could be used for a __________. See illustration GS-0145.

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Question 1 of 20

5eccefa5bacbc34ba4d487df

As shown in the illustration, the pneumatic force balance unit could be used for a __________. See illustration GS-0145.

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🔍 Key Concepts

• Pneumatic force-balance devices convert a sensed variable into a proportional air signal. • Look at what process variable is actually applied to the sensing element labeled P₄ and the spring in unit 4. • Notice that the output air signal Pₐ goes to a control system, while the supply and bleed form a standard pneumatic transmitter/controller arrangement.

💭 Think About

• Ask yourself: in this sketch, is the instrument directly moving a valve stem or only producing a pneumatic signal that could be sent somewhere else? • Which of the answer choices normally uses a pressure acting on a diaphragm against a spring to create a proportional pneumatic output signal? • Do level or temperature measuring devices usually look like this, or do they require additional elements (floats, bulbs, capillaries) that are not shown here?

✅ Before You Answer

• Identify what physical quantity is applied at P₄; is it a pressure, level, or temperature signal? • Check whether any mechanical linkage to a valve stem is drawn; if not, be cautious about choosing a "valve positioner" answer. • Remember that a force-balance transmitter typically has: a supply, a bleed/nozzle, and an output air pressure that is proportional to the sensed variable. Match that to the most appropriate choice.

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Question 1 of 20

As shown in the illustration, the pneumatic force balance unit could be used for a __________. See illustration GS-0145.

water level alarm actuator

proportional action steam pressure transmitter

feed water regulating value positioner

fuel oil heater temperature regulator

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Question 1 / 205eccefa5bacbc34ba4d487df

Question 1 of 205eccefa5bacbc34ba4d487df

As shown in the illustration, the pneumatic force balance unit could be used for a __________. See illustration GS-0145.

Back

Question 1 of 20

5eccefa5bacbc34ba4d487df

As shown in the illustration, the pneumatic force balance unit could be used for a __________. See illustration GS-0145.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

👋 Hi! I'm Genie, your AI study assistant. How can I help you with this question?

Quick actions

— No credit card needed