CTR 156CT Propane Practice Test

When filling by volume, the meter register is used to determine when the cylinder is full of liquid propane.

True False Not Applicable Only for weighing

Correct Answer:

False

Explanation:

Propane cylinders are filled by weight, not by volume. In practice, the fill is controlled to reach a specific gross weight (cylinder plus propane) and often follows an 80% fill rule to allow for expansion with temperature. The meter that measures volume dispensed isn’t a reliable indicator of fullness on its own because the amount of liquid propane inside a cylinder can change with temperature, while the target is the correct mass. So the statement is false—the fullness is determined by weight, not by the volume shown on a meter.

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