Which air flow gauge measures air flow into the brake pipe in CFMs and may be used to perform train line leakage tests?

Which air flow gauge measures air flow into the brake pipe in CFMs and may be used to perform train line leakage tests?

• A. Brake Pipe Flow Meter
• B. Pressure Gauge
• C. Air Flow Measurement Indicator (AFM)
• D. Temperature Sensor

Answer: (C)

Measuring how fast air moves into the brake pipe in CFMs is what lets you assess leakage accurately. The Air Flow Measurement Indicator is built to gauge airflow rate directly, giving a CFMs reading that you can use for train line leakage tests. A pressure gauge only tells you the pressure, not the flow rate, so it isn’t suitable for measuring how much air is moving. A temperature sensor measures temperature, which doesn’t reflect airflow. A brake pipe flow meter might relate to flow, but the instrument labeled for airflow measurements specifically provides the CFMs readout needed for leakage testing, making it the best choice.

Measuring how fast air moves into the brake pipe in CFMs is what lets you assess leakage accurately. The Air Flow Measurement Indicator is built to gauge airflow rate directly, giving a CFMs reading that you can use for train line leakage tests.

A pressure gauge only tells you the pressure, not the flow rate, so it isn’t suitable for measuring how much air is moving. A temperature sensor measures temperature, which doesn’t reflect airflow. A brake pipe flow meter might relate to flow, but the instrument labeled for airflow measurements specifically provides the CFMs readout needed for leakage testing, making it the best choice.