Bently Nevada 3300/20 Tachometer Module | Speed Monitoring

3300/20 Series Tachometer Module - Speed Monitoring Solution

Precision speed measurement module from Bently Nevada's 3300 platform. The 3300/20-XX-XX-03-00-00 converts magnetic pickup or proximity probe signals into accurate RPM data for machinery speed monitoring, overspeed protection, and process control applications.

📊 Speed Measurement Essentials

Model Series: 3300/20 Tachometer Module
Input Types: Magnetic pickup, proximity probe, or TTL pulse
Speed Range: 0 to 100,000 RPM (configurable)
Accuracy: ±0.01% of reading
Update Rate: 10 Hz typical
Output Signal: 4-20 mA proportional to speed
Relay Outputs: Configurable setpoint alarms
Power Supply: 24 VDC ±10%
Display: LED digital readout (optional)
Mounting: DIN rail or panel mount

🎯 Critical Speed Applications

Overspeed Protection: Continuously monitors rotating equipment speed and triggers emergency shutdown when dangerous overspeed conditions are detected—preventing catastrophic turbine failures, compressor surges, and generator damage.

Process Control Integration: Provides real-time speed feedback to control systems for maintaining optimal operating points in variable-speed drives, governors, and automated process equipment.

Startup/Shutdown Monitoring: Tracks acceleration and deceleration rates during machinery startup and coast-down sequences, detecting abnormal behavior that indicates bearing problems, coupling issues, or imbalance conditions.

⚙️ Configuration Flexibility

✓ Multi-Input Compatibility: Accepts signals from magnetic pickups, eddy current probes, or digital pulse sources
✓ Programmable Setpoints: Configure up to four independent alarm thresholds for alert and trip functions
✓ Scalable Output: 4-20 mA output scales to any speed range for seamless DCS/PLC integration
✓ Gear Tooth Compensation: Automatically calculates RPM from multi-tooth gear wheels
✓ Fail-Safe Design: Sensor fault detection with configurable upscale/downscale output behavior

💼 Industry Deployments

Power Generation: Monitor turbine speed in combined-cycle plants, cogeneration facilities, and independent power producers where precise speed control maintains grid synchronization and prevents equipment damage during load transients.

Oil & Gas: Track compressor and pump speeds in upstream production, midstream pipeline, and downstream refining operations—ensuring equipment operates within safe speed envelopes while maximizing throughput.

Manufacturing: Control motor speeds in paper mills, steel rolling mills, textile production, and food processing lines where product quality depends on maintaining precise rotational speeds throughout the production cycle.

🔧 System Integration Strategy

The 3300/20 module integrates into existing monitoring architectures through standard 4-20 mA analog outputs and relay contacts. Connect the analog output to your DCS or PLC for continuous speed indication and trending. Wire relay contacts to emergency shutdown systems for independent overspeed protection that operates even if the control system fails.

Multiple modules can share common power supplies and monitoring networks, simplifying multi-machine installations. The module's isolated outputs prevent ground loops and electrical noise from compromising measurement accuracy in electrically harsh industrial environments.

📦 Complete Package

One 3300/20 tachometer module, mounting hardware, terminal blocks, configuration guide, and calibration certificate. All components meet API 670 requirements for machinery protection systems and carry CE certification for global deployment.

Product Condition: Brand new, factory-sealed with full manufacturer warranty and technical support.