Bently Nevada 3300/50-02-01-00-00 Tachometer Monitor

Bently Nevada 3300/50 Tachometer - Technical Overview

1. Product Introduction

The 3300/50 Tachometer is a key component of Bently Nevada’s Asset Condition Monitoring suite, designed for continuous real-time measurement of shaft rotational speed, rotational acceleration, and zero-speed detection in industrial machinery.

2. Core Functionalities

2.1 Measurement & Input Capabilities

Dual Transducer Support: Accepts inputs from two transducers (e.g., Bently Nevada speed probes) with built-in voting logic—minimizes false indications if a single transducer fails.

Outputs: Provides proportional analog voltage/current outputs (rear terminal strip) and relay-based status alerts (ALERT, DANGER). Also features zero-speed detection functionality.

2.2 Front-Panel Interface

Meter Display: Analog meter shows real-time shaft speed (scalable range).

Status Indicators: LEDs for OK, ALERT, DANGER, and BYPASS statuses for at-a-glance system health monitoring.

Buffered Outputs: Two buffered, isolated outputs for signal distribution to external systems.

3. Critical Application Warnings

Not for Speed Control/Overspeed Protection: The 3300/50 is not designed for speed control or overspeed protection applications. For reliable overspeed protection, use Bently Nevada’s 3300/53 or 3500/53 Electronic Overspeed Detection Monitors.

Analog Output Limitation: The analog proportional output is suitable only for data logging or chart recording—not for control systems.

Alert Setpoints: Speed alert setpoints are intended for annunciation purposes only, not for protective action.

4. Installation & Use Considerations

Transducer Voting Logic: Built-in logic ensures reliable operation even if one transducer fails, enhancing measurement integrity.

Misuse Risks: Failing to adhere to these warnings may result in equipment damage or bodily injury. Always use purpose-built overspeed protection modules for safety-critical applications.

For detailed specifications, wiring diagrams, or engineering support, consult Bently Nevada’s official documentation or technical services.

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