Bently 330780-90-00

Technical Specifications

• Part Number: 330780-90-00
• Probe Diameter: 8 mm (0.315 inches)
• Measurement Range: 0 to 2 mm (0 to 0.0787 inches) linear range
• Operating Frequency Range: 0 to 10,000 Hz
• Output Signal: 4 to 20 mA DC (proportional to measured displacement); optional voltage output available
• Supply Voltage: 18 to 32 V DC (nominal 24 V DC)
• Operating Temperature Range: Probe: -51 °C to +177 °C (-60 °F to +351 °F); Preamplifier: 0 °C to +65 °C (32 °F to +149 °F)
• Storage Temperature Range: -51 °C to +177 °C (-60 °F to +351 °F)
• Probe Material: Stainless steel (AISI 316) housing for corrosion resistance
• Cable Compatibility: Designed for use with Bently Nevada 330730 series extension cables (e.g., 330730-080-01-00)
• Accuracy: ±1% of full-scale measurement range
• Insulation Resistance: ≥100 MΩ at 500 V DC (between probe tip and housing)

Function Features

• High Measurement Precision: Delivers ±1% accuracy across its linear range, ensuring precise tracking of shaft movement and vibration. This level of precision allows for early detection of potential equipment issues, such as misalignment or bearing wear, before they escalate into major failures.
• Broad Frequency Response: The 0 to 10,000 Hz frequency range enables the system to capture both low-frequency vibrations (common in slow-speed machinery) and high-frequency oscillations (typical of high-speed turbines and compressors), making it versatile across various equipment types.
• Robust Environmental Resistance: The probe’s AISI 316 stainless steel housing provides excellent resistance to corrosion, chemicals, and physical abrasion. It operates reliably in extreme temperature conditions, from cryogenic environments to high-heat industrial settings, without performance degradation.
• Stable Signal Transmission: The integrated system design, combined with compatibility with shielded extension cables, minimizes electromagnetic interference (EMI) and radio frequency interference (RFI). This ensures that the 4 to 20 mA output signal remains clean and consistent, even in noisy industrial environments with high electrical activity.
• Easy Integration & Calibration: The system is designed for seamless integration with Bently Nevada’s 3300 XL monitoring racks and other third-party control systems. It features simplified calibration procedures, with clear documentation and tooling support, reducing setup time and maintenance complexity.
• Diagnostic Capabilities: Some variants include built-in self-diagnostic functions that monitor the health of the probe, cable, and preamplifier. This allows maintenance teams to quickly identify and troubleshoot issues with the monitoring system itself, ensuring continuous reliability.
• Long Service Life: Industrial-grade components and rigorous testing ensure a long operational lifespan, even in harsh operating conditions. This reduces the need for frequent replacements, lowering total cost of ownership.

Application Scenarios

• Power Generation: Widely used in thermal power plants, nuclear power plants, and hydroelectric facilities to monitor key rotating equipment, including steam turbines, gas turbines, generators, and water pumps. It tracks shaft vibration and axial position to prevent catastrophic failures that could disrupt power supply.
• Oil & Gas Industry: Deployed in upstream (drilling rigs, wellheads), midstream (pipelines, pumps), and downstream (refineries, petrochemical plants) operations. It monitors compressors, centrifugal pumps, and gearboxes exposed to harsh chemicals, high pressures, and extreme temperatures.
• Chemical & Pharmaceutical Manufacturing: Used to monitor mixers, agitators, and process pumps in chemical reactors and pharmaceutical production lines. The system’s corrosion resistance and precision ensure compliance with strict quality and safety standards.
• Marine & Offshore: Applied in ship engines, offshore drilling platforms, and marine propulsion systems. The probe’s stainless steel construction resists saltwater corrosion, making it suitable for harsh marine environments.
• Metallurgy & Mining: Utilized in steel mills, aluminum smelters, and mining equipment (e.g., crushers, grinding mills) to monitor heavy-duty rotating machinery. It withstands the dust, vibration, and high temperatures common in these industries.
• Aerospace & Defense: Used in ground support equipment for aircraft, such as jet engine test stands, and in military applications where reliable machinery monitoring is critical for operational safety.
• Pulp & Paper Industry: Monitors papermaking machines, including rollers and dryers, ensuring consistent operation and preventing paper breaks caused by equipment vibration or misalignment.