Bently Nevada 3300/50-01-02-03-02 Series Monitoring System

The Bently Nevada 3300/50-01-02-03-02 is a high-performance tachometer monitor designed for continuous measurement of shaft rotational speed, zero-speed detection, and rotor acceleration. It belongs to the 3300 series of machinery protection systems and is widely used in industrial applications requiring precise speed monitoring.

Technical Specifications

• Model: 3300/50-01-02-03-02
• Function: Tachometer Monitor
• Input Range: ±10 V peak
• Frequency Range: 1 Hz to 10 kHz (user-selectable)
• Analog Outputs: Continuous monitoring signals for control system integration
• Digital Outputs: Discrete trip signals for alarm and shutdown
• Alarm Setpoints: Dual configurable thresholds
• Relay Type: Hermetically sealed, 5 Amp capacity
• Agency Approval: Option 03 – Not required
• Safety Barrier: Option 02 – Internal
• Dimensions: 5.1 cm × 20.3 cm × 33.0 cm
• Weight: 1.5 kg
• Operating Temperature: 0°C to +65°C
• Storage Temperature: -40°C to +85°C
• Relative Humidity: Up to 95%, non-condensing
• Power Supply: Powered via 3300 rack system

Key Features

• Dual setpoint tachometer functionality
• Zero-speed detection and rotor acceleration monitoring
• Buffered transducer input with fault protection
• Hermetically sealed relay for high-reliability switching
• Analog and digital outputs for flexible integration
• Front panel indicators for OK, Alert, Danger, and Bypass
• Compliant with API 670 standards for speed monitoring

Ordering Information

Configuration breakdown:

• 3300/50: Tachometer Monitor
• -01: Dual Setpoint Tachometer
• -02: Hermetically sealed alarm relay
• -03: No agency approval required
• -02: Internal safety barrier