Bently Nevada 3300/20-12-01-03-00-00 | Dual Thrust Position Monitor Module

1. Product Title

Bently Nevada 3300/20-12-01-03-00-00 – Dual Thrust Position Monitor Module

2. Product Overview

The 3300/20-12-01-03-00-00 is a specialized dual-channel monitor from the 3300 series, focused on axial thrust position monitoring for rotating machinery. It processes signals from proximity probes to measure shaft axial displacement, detecting excessive end-play or thrust bearing wear that could lead to equipment failure. This module addresses critical safety issues in high-thrust applications by providing direct and average position readings, programmable alarms, and 4-20 mA outputs for integration into DCS or SCADA systems. Configured for specific probe compatibility and full-scale ranges, the 3300/20-12-01-03-00-00    ensures precise protection compliant with API 670 standards, enabling predictive maintenance in demanding industrial settings.

3. Technical Specifications

• Brand: Bently Nevada
• Model:3300/20-12-01-03-00-00
• Warranty: One Year
• Condition: 100% New & Original
• Channels: Dual independent thrust position channels
• Input Sensitivity: 100 mV/mil (4 V/mm) or 200 mV/mil (8 V/mm) programmable​
• Frequency Response: 0-500 Hz typical for position signals​
• Power Consumption: 2 Watts nominal​
• Accuracy: ±0.33% full-scale typical​
• Outputs: +4 to +20 mA proportional, buffered transducer outputs​
• Dimensions/Weight: Rack module: 15 x 10 x 5 cm / 1 kg​

4. Key Features & Benefits

• Direct & Averaged Position: Displays peak and average axial displacement on two channels, allowing differentiation between transient and steady-state thrust issues.​
• Programmable Gap Measurement: Measures probe gap voltage to verify installation integrity, preventing false readings from improper sensor positioning.​
• Trip Multiply Function: Applies 2X/3X multipliers during startup/coastdown, avoiding nuisance trips in transient operations.​
• Relay Logic Flexibility: Configurable OK/Alert/Danger relays support latching or non-latching modes for custom safety interlocks.​

5. Application Scenarios

• Steam Turbines in Power Plants: Monitors axial thrust to protect bearings during load ramps and thermal expansions.​
• Centrifugal Compressors in Oil & Gas: Tracks shaft end-play in multi-stage units, ensuring seal integrity under varying pressures.​
• Hydroelectric Generators: Measures thrust position to prevent collar rubs in vertical shaft machines.​

6. Frequently Asked Questions (FAQ)

• Q: What is the primary function of the  3300/20-12-01-03-00-00 ?
  A: It monitors axial shaft thrust position and gap voltage on dual channels for machinery protection.​
• Q: Is  3300/20-12-01-03-00-00 compatible with legacy systems?
  A: Yes, compatible with standard 3300 XL racks and 3300 series proximity probes/systems.