Which of the following statements is accurate concerning the vibration sensing device used with the separator shown in the illustration? Illustration MO-0127 |
A) The vibration switch is sensitive to vibration in a direction horizontal to its mounting base and is normally installed low on the separator where movement is magnified. |
B) Vibration sensors are not used with centrifuges currently installed on diesel vessels due to excessive vibrations developed by the main propulsion units. |
C) The detector is so arranged to prevent abnormal harmonic frequencies from being developed while the separator is passing through its critical speed range. |
D) The detector mechanism consists of an armature suspended on a flexure pivot and restrained from motion by a permanent magnet acting through a small air gap. |