Bently Nevada 3500/50 Tachometer Module

4 Input Channels: Each channel is designed to accurately handle all types of sensors. It has maximized common-mode rejection, and the input impedance is optimized for low sensor loading and precise signal acquisition.

Sampling Rate: Up to 100 kS/s per channel. It allows you to identify fast and detailed changes in the monitored signal when capturing dynamic mechanical or process behavior.

Accuracy Statement: The accuracy of the Bently Nevada 3500/50 is ±0.25% of reading + 0.1% of full scale. This positioning accuracy is critical to discovering subtle changes in the observed parameters, so that potential problems can be identified at an early stage.

Frequency Response: The frequency response is 0.25–25 kHz. The wide bandwidth ensures that it can correctly analyze low-frequency drifts and high-frequency oscillations, so that it can cover the widest range of industrial vibration and dynamic phenomena.

Dual-Channel Speed & Acceleration Monitoring: Provides speed, acceleration, and zero-speed detection with buffered coax outputs.

Flexible Threshold & Hysteresis: Auto/manual threshold and user-selectable hysteresis ensure reliable triggering.

Onboard 4–20 mA Recorder Outputs: Two isolated loops provide analog feedback for speed or acceleration.

Robust Signal Conditioning: Supports multiple impedance options for proximity-probe or magnetic-pickup inputs.

Epoxy-Sealed, High-Reliability Design: Conformal-coated PCB and sealed components withstand harsh environments.

Hot-Swap Capability with Redundant Power: Can be inserted/removed under power in redundant configurations.

Front-Panel Diagnostics & Bypass: OK, TX/RX, and Bypass LEDs with front-panel bypass switch for testing.

API 670 Compliance: Meets machinery protection standards when rack-configured.

Rotating Machinery Protection: Continuous monitoring of turbine and compressor speed/acceleration for trip logic.

Transient & Reverse-Rotation Detection: Accurate capture of high-frequency events and reverse rotation for safety.

Analog Feedback to Control Systems: 4–20 mA outputs feed DCS/PLC for trending and closed-loop control.

Intrinsically Safe Field Deployments: Optional barriers allow use in Class I Div 2/Zone 2 hazardous areas.