Bently Nevada 3300/45-01-02-03-00 Dual Differential Expansion Monitor

Product Description

Bently Nevada 3300/45‑01‑02‑03‑00 is a high-precision dual-channel differential expansion monitor designed to measure the relative axial movement between a turbine rotor and its casing. This measurement is critical for preventing contact, rubbing, or thermal-expansion-related damage in steam and gas turbines.

The module provides two independent measurement channels for reliable continuous monitoring of large rotating machinery. It is compatible with Bently Nevada 3300 Series proximity sensor systems and supports alarm and trip logic. The unit can be configured for SDI/DDI or mixed 3300 system architectures.

Supplied in original factory-sealed packaging, this module is widely used in power generation, petrochemical, and industrial turbomachinery applications where precise axial expansion monitoring is essential.

Key Features

• Dual-channel differential expansion monitoring

• High-accuracy axial displacement measurement

• Designed for steam and gas turbines

• Supports alarm and trip logic for machinery protection

• Compatible with 3300 Series proximity transducer systems

• Factory-sealed for long-term reliability

• Suitable for SDI/DDI or mixed system configurations

Technical Specifications

General Parameters

Functional Specifications

• Measures relative axial expansion between rotor and casing

• Two independent measurement channels

• Works with proximity probes, extension cables, and Proximitor sensors

• Provides proportional output for monitoring and control systems

• Supports alarm and trip thresholds for turbine protection

• Designed for continuous operation in harsh industrial environments

• Detects turbine conditions such as:

• Thermal bow

• Rotor-casing interference

• Abnormal expansion during startup or shutdown

• Overspeed-related axial movement

Applications

Bently Nevada 3300/45‑01‑02‑03‑00 is suitable for:

• Steam turbines in power plants

• Gas turbines

• Large compressors in petrochemical plants

• Industrial turbines and critical rotating machinery

It ensures real-time axial expansion monitoring to improve operational safety and reduce unplanned downtime.

FAQ

Q: Can this module replace older 3300/45‑01‑01‑XX models?
A: Yes, but system configuration must be SDI/DDI or compatible with mixed 3300 architectures.

Q: How many measurement channels does it support?
A: Two independent channels for differential expansion measurement.

Q: Which sensors are compatible?
A: Works with 3300 Series proximity sensors and Proximitor transducers.

Q: What are the environmental limits?
A: Designed for continuous operation in high-temperature, high-vibration, and harsh industrial conditions.