監控

氣軔系統能透過儀表進行監控，它們通常位於動力車輛的駕駛室中。「主風缸」應始終維持一定壓力讀數，最高 8 bar 並自動受主風泵加壓。「軔管」的工作壓力介於全緊軔時的 3.5 bar 和全鬆軔時的 5 bar之間（因儀表顯示的是以大氣壓為準的相對壓力，實際絕對壓力約比儀表所示高 1 bar）。「軔缸」的壓力則介於 0 bar 至 3.75 bar 之間，用以代表施加至車輪的實際軔力。由於氣軔壓力表中有時包含多個指針，「軔管」壓力表上的紅色指針通常用於表示「軔缸」壓力。

Reading of the main reservoir should always be near 8 bar, as it is automatically refilled by the compressor .

Brake pipe operating pressures are between 3.5 bar when the brake is fully applied and 5 bar when it is fully released. Brake pipe pressure is usually represented by a black or white needle on the brake pipe gauge.

Brake cylinder pressure goes between 0 and 3.75 bar and represents the actual braking force applied to the wheels . Brake cylinder pressure is usually represented by a red needle on the brake pipe gauge.

Since gauges display pressures relative to the atmospheric pressure, the actual absolute pressures are approximately 1 bar higher than what's indicated on the gauge and used in technical documentation.

To help improve visibility of brake cylinder reading, there is a gadget called Brake Cylinder LED Bar, which can be bought in one of the {pll|Shops|shops}}.