Flowmeters are calibrated to indicate the:

Flowmeters are calibrated to indicate the:

• A. Volume of shielding gas supplied.
• B. Capacity of the shielding gas cylinder.
• C. Pressure of shielding gas supplied.
• D. Density of shielding gas supplied.

Answer: (A)

Flowmeters measure how much shielding gas is flowing to the weld per unit time. They’re calibrated to show a volume rate, usually in liters per minute, so the operator can set the exact flow needed for a stable arc and proper weld shielding. This reading reflects the actual gas volume being delivered to the weld area after the regulator, not the total amount of gas left in the cylinder—that would be cylinder capacity, which is a fixed quantity and not something a flowmeter indicates. Pressure is read on a separate gauge and tells you the regulator output, not the rate of flow. Density is a property of the gas that isn’t what the flowmeter displays; the device focuses on volumetric flow. So the flowmeter’s purpose is to indicate the volume of shielding gas supplied per unit time.

Flowmeters measure how much shielding gas is flowing to the weld per unit time. They’re calibrated to show a volume rate, usually in liters per minute, so the operator can set the exact flow needed for a stable arc and proper weld shielding. This reading reflects the actual gas volume being delivered to the weld area after the regulator, not the total amount of gas left in the cylinder—that would be cylinder capacity, which is a fixed quantity and not something a flowmeter indicates. Pressure is read on a separate gauge and tells you the regulator output, not the rate of flow. Density is a property of the gas that isn’t what the flowmeter displays; the device focuses on volumetric flow. So the flowmeter’s purpose is to indicate the volume of shielding gas supplied per unit time.