The Bently Nevada 330380-90-00 is a 3300 XL 16mm High Temperature Proximitor Sensor designed for non-contacting proximity measurements in extreme environments. As part of the 3300 XL High Temperature Proximity System (HTPS), this sensor is engineered to convert the physical distance (gap) between a probe and a target into a proportional 3.94 V/mm (100 mV/mil) voltage signal, facilitating critical machine protection and diagnostic monitoring.

Features

• Designed for continuous operation in extreme environments with probe tip ratings up to +350 degC (+662 degF).
• 4 mm (160 mils) linear measurement range suitable for hot-section machine monitoring.
• Hermetically-sealed ceramic probe tip provides robust protection against moisture and contaminants.
• Compatible with standard Bently Nevada monitoring and diagnostic equipment.
• Integrated hardline cable assembly for reliable signal transmission through high-temperature zones.

Applications

• Steam turbines and large-scale power generation equipment.
• Large centrifugal compressors and gas turbine drive pump sets.
• Heavy-duty rotor equipment in steel and paper mills.
• Hydroelectric generating units for axial trajectory and deflection monitoring.
• Mode shape analysis for turbine R&D and troubleshooting.

Technical Specifications

Installation Guidelines

• Ensure the probe is mounted securely using the specified torque to prevent vibration-induced measurement errors.
• Route hardline cables carefully to avoid exceeding minimum bend radii, especially near high-temperature zones.
• Maintain proper grounding practices for the Proximitor sensor housing to minimize EMI/RFI interference.
• Verify that the total system length (probe + extension cable) matches the calibration requirements of the monitoring system.
• Always power down the monitoring system before connecting or disconnecting the sensor to prevent electrical damage.

FAQ

What is the primary function of the 330380-90-00?

It is a proximity sensor used to measure vibration, thrust position, and differential expansion in hot areas of rotating machinery, converting gap distance into a proportional voltage signal.

What is the total system length for this model?

The 330380-90-00 is configured for a total system length of 9 meters.

Does this sensor require armor?

This specific model is provided without armor; armored versions are typically handled as custom configurations.