The Bently Nevada 3300/20-01-01-00-00, also cataloged as the 3300/20 Dual Thrust Position Monitor, operates as a machinery protection hardware component for continuous axial position and thrust monitoring within Bently Nevada 3300 rack-based monitoring systems. Configured for two-channel measurement, this monitor conditions proximity transducer inputs to deliver reliable axial displacement data for industrial turbomachinery protection architectures.

Model Configuration

The 3300/20-01-01-00-00 represents a specific cataloged ordering configuration of the Bently Nevada 3300/20 Dual Thrust Position Monitor series. The base model number 3300/20 designates a dual-channel monitor engineered to accept input signals from proximity transducer systems, supplying conditioned outputs proportional to axial shaft displacement for critical machinery protection and interlock systems.

Hardware Specifications

Axial Position Measurement and Protection

As a core machinery protection module, the 3300/20 processes incoming gap voltage signals from eddy current proximity probes to measure axial shaft displacement relative to machine thrust bearings. The unit provides real-time signal conditioning, integrated OK circuit diagnostics for detecting transducer or cabling failures, and proportional analog outputs for external control systems or machinery trip interlocks. The dual-channel architecture enables redundant or complementary axial position monitoring on critical rotating equipment such as steam turbines and large compressors.

Installation and Electrical Integration

• Insert the module into a designated slot within an active, compatible Bently Nevada 3300 rack assembly.
• Ensure rack power is isolated and switched off before performing module installation or removal.
• Connect field wiring from axial proximity probe assemblies and power distribution points to the corresponding rear rack terminals with strict adherence to polarity.
• Verify proper system grounding and shield continuity to mitigate electrical noise in industrial plant environments.
• Complete calibration verification and channel checks utilizing a calibrated signal source prior to placing machinery into service.

Frequently Asked Questions

• Q: What is the primary function of the Bently Nevada 3300/20-01-01-00-00 monitor? A: It functions as a dual-channel axial position and thrust monitor for industrial rotating machinery protection systems.
• Q: How many transducer channels does this monitor support? A: The module provides two independent input channels for monitoring axial displacement parameters.
• Q: Which transducer types are compatible with this monitor? A: It is designed to accept inputs from standard Bently Nevada proximity probe transducer systems.
• Q: What are the physical dimensions and weight of the module? A: The module measures approximately 5.0 cm x 32.2 cm x 20.3 cm with a net product weight of 0.96 kg.
• Q: Where is the module physically installed? A: It installs directly into a standard Bently Nevada 3300 rack enclosure slot.
• Q: Does the unit feature transducer fault diagnostics? A: Yes, it includes integrated OK circuit monitoring to detect open or shorted transducer wiring and probe faults.
• Q: What power source supplies the monitor? A: It receives operating power directly through the backplane of the 3300 rack power supply unit.
• Q: What type of signal outputs does the module provide? A: It provides conditioned analog recorder outputs and alarm/trip interface signals via the rack architecture.