While calibrating a 4-20 mA electronic, or a...

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Question 1 of 2066636eee28f7522a1c51e5cb

While calibrating a 4-20 mA electronic, or a 3-15 psi pneumatic controller, with a process output of 50-250 psi, what is the controller span/range you are dealing with?

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Question 1 of 20

66636eee28f7522a1c51e5cb

While calibrating a 4-20 mA electronic, or a 3-15 psi pneumatic controller, with a process output of 50-250 psi, what is the controller span/range you are dealing with?

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🔍 Key Concepts

• Difference between span and range in instrumentation (span is the numerical difference between the limits; range is the actual upper and lower values stated) • Relationship between signal span (4–20 mA or 3–15 psi) and process span (50–250 psi in this question) • How process zero and full-scale values are used when you calibrate a controller

💭 Think About

• First, calculate the numerical difference between the lower and upper process values given (50 and 250). What does that number represent? • Ask yourself: when technicians say a controller has a span of X units, do they usually mean ‘from 0 to X’ or ‘the difference between the lower and upper values’? • Look carefully at each choice: which ones are talking about the process (50–250 psi) and which are talking about the instrument signal (mA or controller air signal)?

✅ Before You Answer

• Verify you can clearly state: process range in psi and process span in psi for 50–250 psi • Check which option correctly uses the term span (difference) versus range (from lower to upper limit) for the process output given • Confirm that none of the distractors are confusing the signal range (4–20 mA / 3–15 psi) with the process variable range (in psi of the process)

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Question 1 of 2066636eee28f7522a1c51e5cb

While calibrating a 4-20 mA electronic, or a 3-15 psi pneumatic controller, with a process output of 50-250 psi, what is the controller span/range you are dealing with?

Back

Question 1 of 20

66636eee28f7522a1c51e5cb

While calibrating a 4-20 mA electronic, or a 3-15 psi pneumatic controller, with a process output of 50-250 psi, what is the controller span/range you are dealing with?

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?

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— No credit card needed