TheBently Nevada 3300/50-01-02-03-02is a high-reliabilityTachometer Monitorengineered for the continuous monitoring of rotating machinery speed. As a core component of the 3300 series rack, it tracks shaft RPM, detects zero-speed conditions, and calculates rotor acceleration to prevent overspeed or mechanical stress.
Technical Specifications
Model Number:3300/50-01-02-03-02
Primary Function:Tachometer, Zero Speed, and Acceleration Monitoring
Input Signal:±10 V peak (Accepts Proximitor or Magnetic Pickup inputs)
Frequency Range:1 Hz to 10 kHz (User-selectable)
Alarming:Dual (Alert and Danger) configurable setpoints
Comprehensive Speed Tracking:Beyond simple RPM, the module monitors acceleration rates—a critical metric during turbine startup to ensure the rotor does not pass through critical resonance phases too slowly or exceed safety limits too quickly.
Dual-Channel Safety:Features two alarm levels (Alert/Danger) that can be mapped to the onboard hermetically sealed relay. This allows the module to trigger a local alarm or an automated machine trip if speed limits are breached.
Integrated Safety Barriers:The inclusion of barriers ensures that electrical energy levels sent to the speed sensors in the field are kept below ignition thresholds, allowing for safe operation in hazardous (Class I, Div 1) areas.
High Frequency Versatility:Supporting a range up to10 kHz, the monitor can accurately process signals from high-tooth-count gears, providing extremely high resolution for speed measurements.
Industrial Ruggedness:Specifically designed to operate in temperatures up to65°C, ensuring performance in the hot environments common to power plant and refinery turbine decks.
