Description
The Bently Nevada 330780-90-00 is a high-performance proximity sensor module engineered for the 3300 XL 11 mm Proximity Transducer System. It processes radio frequency (RF) signals generated by an eddy-current probe tip to monitor the structural differential expansion, axial thermal growth, or shaft position of heavy-duty steam turbines and generators. Maintenance crews drop this device into diagnostic cabinets to convert physical distance changes into an analog voltage output. Are you updating an older machinery protection loop? This module provides an output scale factor of 3.94 V/mm (100 mV/mil), but you must verify that your combined probe and extension cable length balances out to the exact system calibration profile required by this specific transmitter configuration.
Technical Specifications and System Parameters
| Parameter | Value |
| Model Number | 330780-90-00 |
| Manufacturer | Bently Nevada (Baker Hughes) |
| Transducer Series | 3300 XL 11 mm System |
| Total System Length Option (90) | 9.0 meters (29.5 feet) configuration |
| Mounting Form Factor | Surface / Panel mount base configuration |
| Agency Approval Option (00) | No hazardous area approvals requested |
| Linear Measurement Range | 0.5 to 4.5 mm (20 to 180 mils) |
| Scale Factor Sensitivity | 3.94 V/mm (100 mV/mil) \pm10% under nominal load |
| Supply Voltage Requirement | −17.5 to −26 V DC (negative reference bus) |
| Current Consumption | 12 mA maximum operating draw |
| Temperature Range | −40 to +85 °C operational spectrum |
Commercial Condition and Global Warehouse Availability
We supply this component in New Original (Factory Boxed) or New Surplus condition depending on regional warehouse stocks. Because a failure within a turbine’s differential expansion protection loop can trigger immediate emergency shutdowns, our global team prioritizes the verification of factory-sealed seals before scheduling international dispatch.
- Availability: In stock across specialized fulfillment yards
- Lead Time: Dispatches within 1 to 2 business days from order processing
- Warranty: 12-month full replacement operational warranty
- Pricing Note: The listed price serves as a standard global commercial index. Actual contract pricing fluctuates based on localized distribution rules, bulk project rates, and emergency order speed. Contact our trade office for a formal commercial quotation.
International Shipping and Customs Clearance Guidance
Shipping advanced machinery monitoring hardware like the 330780-90-00 requires careful international trade execution. We coordinate immediate express air freight shipments via DHL Express, FedEx, and UPS to streamline physical deliveries to industrial plants across North America, Europe, Australia, and Asia-Pacific.
This sensor is classified under HS Code 8543.70.99 (or 8538.90 depending on local import tariff subheadings governing electronic industrial monitoring converters). The “90” option code designates a 9.0-meter matching system calibration profile; don’t worry about customs holding your parcel over this suffix, provided your commercial invoices and export declarations explicitly map out the complete string 330780-90-00. Our compliance desk completes all electronic export declarations, itemized packing manifests, and verified country of origin declarations, ensuring unhindered processing through destination border checkpoints.
Bently Nevada 3300 XL Proximitor Field FAQ
- Can I connect an 8 mm proximity probe to this 11 mm Proximitor sensor?Well, technically the physical ClickLoc connectors will lock together, but the configuration will fail in practice. In our field experience, the internal driver oscillator of the 330780 series is factory-tuned specifically for the larger impedance and inductance curve of an 11 mm probe tip. Hooking up an 8 mm probe will completely warp the volt-to-mil scale factor, throwing your vibration or displacement monitors into an uncalibrated fault state.
- What happens if my physical cable run is only 5.0 meters long instead of 9.0 meters?If you combine a 5.0-meter physical cable string with a Proximitor marked with a “90” length code (which looks for a 9.0-meter electrical balance), the signal output will exhibit severe non-linear drift. To make this module function accurately without replacing the sensor, you must insert a 4.0-meter extension cable into the line to bring the total network back to the required 9.0-meter electrical length profile.
