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Gas Fitter Practice · Question

Which type of gas meter measures gas volume using rotating impellers?

Rotary meters use two figure-eight shaped impellers that rotate to displace and measure gas volume, typically for higher flow rates.

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Question: Which type of gas meter measures gas volume using rotating impellers?

Answer options:

  • Diaphragm meter ✅ Rotary meter
  • Orifice meter
  • Ultrasonic meter

Correct answer: Rotary meter

Explanation: Rotary meters use two figure-eight shaped impellers that rotate to displace and measure gas volume, typically for higher flow rates.

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