Certified Respiratory Therapist Practice Exam 2025 – Complete Test Prep Guide

The precision flowmeter is the ideal device to verify the output accuracy of a Bourdon gauge regulator because it measures the actual flow rate of gas being delivered. The Bourdon gauge is used to monitor pressure and may not provide a direct indication of flow accuracy. The precision flowmeter provides a quantitative measurement, allowing the clinician to compare the flow delivered by the regulator against the expected values, ensuring that the patient receives the correct amount of gas.

On the other hand, while a manometer is useful for measuring pressure, it does not provide flow measurements essential for assessing the performance of the regulator. A flow restrictor would limit the flow but would not measure it, failing to confirm the accuracy of the output. A pressure gauge, like the Bourdon gauge, gives pressure readings but does not assess flow accuracy. Thus, the precision flowmeter is the most appropriate tool for verifying the accuracy of gas delivery from a Bourdon gauge regulator.