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
Model
330380-90-00
System Length
9 meters
Probe Tip Material
Ceramic
Signal Output
3.94 V/mm (100 mV/mil)
Linear Range
4 mm (160 mils)
Output Resistance
50 Ohm
Probe Case Torque
81 N.m (720 in.lb)
Operating Temp (Proximitor)
-51 degC to +100 degC
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.
