Meter Reading and Measurement Flashcards
6 cards from real RMGA practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 Meter Reading and Measurement flashcards as text
What is the role of the pressure regulator in a residential meter set?
Answer: To reduce gas pressure from the distribution main to the low pressure required by residential appliances
The meter set regulator steps down distribution main pressure to the safe, low pressure (typically 7 inches water column for residential) required by home appliances.
What is 'therm' as a unit of gas measurement used in billing?
Answer: 100,000 BTU of heat energy
A therm equals 100,000 BTU and is used to bill natural gas based on its energy content rather than just its volume.
What is the purpose of a 'pressure corrector' or 'temperature compensator' on a commercial gas meter?
Answer: To correct measured volume to standard conditions (14.73 psia, 60°F) for accurate billing
A pressure and temperature corrector adjusts raw meter volume to standard base conditions so that billing reflects the standardized energy content regardless of actual operating conditions.
What action should a meter technician take when they find evidence of meter tampering?
Answer: Document the evidence, restore safe service if needed, and report to the appropriate utility supervisor for investigation
Meter tampering is potential theft of service and a safety hazard; it must be documented, reported to supervisors, and the situation made safe pending a formal investigation.
What does 'pressure differential' across a turbine meter indicate about gas flow?
Answer: Higher differential pressure indicates higher flow rate through the meter
In turbine meters, higher differential pressure across the meter corresponds to higher gas flow velocities and greater flow rates through the device.
What is the maximum test pressure typically applied to a residential meter set during a new installation pressure test?
Answer: 1.5 times the MAOP of the meter set
Pressure tests for new installations are typically conducted at 1.5 times the MAOP to verify integrity without exceeding safe equipment limits.
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