Description
For industrial machinery vibration and displacement monitoring, the 330780-90-CN serves as a critical signal conditioning module within the Bently Nevada 3300 XL 11 mm Proximity Transducer System. This Proximitor sensor accepts high-frequency radio frequency (RF) signals from an 11 mm proximity probe, converting the physical gap between the probe tip and the observed conductive target into a linear, dynamic voltage output.
Operating within the established 3300 XL framework, this device delivers high noise immunity and remains stable across varying ambient conditions. The hardware is calibrated for a 9.0-meter system length, requiring matching probe and extension cable configurations to maintain scale factor accuracy. With the CN agency approval configuration, this module meets country-specific regulatory compliance standards for installation in hazardous industrial environments.
Features
- Engineered for compatibility with Bently Nevada 3300 XL 11 mm proximity probe systems.
- Factory-calibrated for a total physical system length of 9.0 meters (29.5 feet).
- Delivers a continuous linear voltage output proportional to static and dynamic displacement.
- Supplied with the CN agency option to meet localized hazardous location certifications.
- Designed with durable construction for high resistance to electromagnetic interference (EMI) and radio frequency interference (RFI).
- Supports DIN rail mounting and panel installation profiles.
Applications
- Steam, gas, and hydro turbine shaft vibration monitoring.
- Radial vibration and axial thrust position tracking in large centrifugal compressors.
- Critical industrial pump, blower, and fan monitoring systems.
- API 670 compliant machinery protection and monitoring configurations.
Technical Specifications
| Manufacturer |
Bently Nevada |
| Part Number |
330780-90-CN |
| Product Series |
3300 XL 11 mm |
| Device Type |
Proximitor Sensor / Proximity Sensor Module |
| System Length Configuration |
9.0 meters (29.5 feet) |
| Agency Approval Option |
CN (Country-specific hazardous area certifications) |
| Signal Output |
Linear voltage output proportional to gap |
| Country of Origin |
United States |
| Shipping Weight |
3.0 kg |
Connections and Interfaces
| Terminal / Port |
Function Description |
| VT |
Power input source (-24 Vdc nominal) |
| OUT |
Dynamic and static voltage output signal |
| COM |
Common ground / signal return |
| Coaxial Connector |
Connection port to 3300 XL 11 mm extension cable |
Installation Guidelines
- Verify that the combined length of the proximity probe and extension cable matches the 9.0-meter calibration of the 330780-90-CN Proximitor sensor.
- Mount the Proximitor sensor inside a weather-proof, protective enclosure to shield electrical terminals from environmental contaminants.
- Use physical connector protectors on coaxial connections to prevent moisture ingress and signal degradation.
- Isolate the Proximitor DIN-rail mounting base from local structural ground loops to maintain signal fidelity.