Description
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.
