BENTLY 3300/14-01-20-00 Dual Channel Vibration Monitor

1. Product family and positioning
3300/14-01-20-00 belongs to Bently Nevada’s classic 3300 monitoring system. This system is mainly used for continuous and online monitoring of the operating status of large rotating machinery (such as steam turbines, compressors, etc.), fully complying with the requirements of the American Petroleum Institute API 670 standard for mechanical protection applications.

2. Speculation on core functions
According to similar named “dual channel vibration monitors” in the same series (such as 3300/16), the 3300/14 module typically has the following core functions:
Dual channel synchronous monitoring: supports synchronous acquisition of two signals, and can continuously measure the shaft vibration or gap voltage signals of two channels.
Sensor health self-test (OK detection): The system will detect in real-time whether the output voltage of the preamplifier is within the upper and lower limits. If the sensor wiring is incorrect or the input signal is abnormal, the corresponding OK LED light will turn off and trigger a fault alarm; If the signal returns to normal for more than 30 seconds, the OK light will flash at a frequency of 1Hz to indicate recovery.
Multi level alarm and interlock protection: When the vibration signal exceeds the preset Alert or Danger set point, the corresponding LED indicator will light up and the internal relay will activate to trigger the system’s alarm or shutdown interlock logic.
Bypass mode: If a channel continues to malfunction, it can be placed in the “bypass state” by setting a switch. At this time, the monitor can operate as a single channel while ensuring that the OK relay resumes power supply, avoiding the machine from shutting down accidentally.