Product Overview
When precise shaft vibration and position monitoring are critical, the Bently Nevada 330904-00-10-50-02-00 delivers reliable performance. This 3300 NSv proximity probe is designed for industrial machinery protection, offering enhanced chemical resistance and superior side-view characteristics compared to earlier models. The probe is part of the 3300 NSv series and is fully compatible with existing Bently Nevada 3300 RAM systems.
The 330904-00-10-50-02-00 features an M8x1 threaded case with armor, a 100 mm overall case length, and a 5.0 meter (16.4 feet) total length with a miniature coaxial ClickLoc connector. It operates over a wide temperature range and provides accurate measurements for rotating equipment such as compressors, turbines, and pumps.
Key Features
- Probe tip material: Polyphenylene sulfide (PPS)
- Probe case material: AISI 304 stainless steel
- Linear range: 1.5 mm (60 mils) from 0.25 to 1.75 mm
- Incremental Scale Factor (ISF): 7.87 V/mm (200 mV/mil)
- Frequency response: 0 to 10 kHz (+0, -3 dB) with up to 305 m field wiring
- Operating temperature: -52°C to +177°C
- Maximum torque: 0.56 N•m (5 in•lb)
- Minimum bend radius: 25.4 mm (1.0 in)
Technical Specifications
| Parameter |
Value |
| Probe dc resistance (5.0 m) |
5.3 ± 0.7 ohms |
| Extension cable dc resistance (center conductor) |
0.220 Ω/m (0.067 Ω/ft) |
| Extension cable dc resistance (shield) |
0.066 Ω/m (0.020 Ω/ft) |
| Extension cable capacitance |
69.9 pF/m (21.3 pF/ft) typical |
| Field wiring |
0.2 to 1.5 mm² (16 to 24 AWG), three-conductor shielded triad, max 305 m |
| Recommended gap setting |
1.0 mm (40 mils) |
| Deviation from best fit straight line (DSL) |
Less than ±0.06 mm (±2.3 mils) |
| Target size (flat target) |
Minimum 8.9 mm diameter, recommended 13 mm diameter |
| Probe cable |
75 Ω coaxial, FEP insulated, lengths 0.5, 1, 5, or 7 m |
| Storage temperature |
-52°C to +177°C |
| Probe case thread |
M8x1, max thread engagement 12 mm |
| Connector-to-connector torque (M8X1) |
Maximum 7.3 N•m, recommended 5.1 N•m |
Industry Applications
This 330904-00-10-50-02-00 probe excels in process compressor applications where chemical resistance is essential. Its increased chemical resistance compared to the 3300 RAM probe allows reliable operation in harsh environments. The probe also performs well for axial position measurements on shafts, provided the shaft diameter is at least 13 mm (0.5 in). For smaller shafts, scale factor changes can occur; reducing the gap helps mitigate this effect.
Typical applications include:
- Centrifugal and reciprocating compressors
- Steam and gas turbines
- Pumps and motors
- Generators and gearboxes
Installation & Setup Guidance
Mount the probe with the recommended torque: finger tight for the probe tip, and for the probe case use a maximum of 7.3 N•m (65 in•lb) with a recommended 5.1 N•m (45 in•lb). Ensure the unthreaded length is set to 00 mm and the overall case length is 100 mm as specified. When routing the cable, maintain a minimum bend radius of 25.4 mm (1.0 in) to avoid damage.
For field wiring, use a three-conductor shielded triad cable with conductor sizes from 0.2 to 1.5 mm² (16 to 24 AWG). If using ferrules, the recommended range is 0.25 to 0.75 mm² (18 to 23 AWG). The maximum distance between the Proximitor Sensor and the monitor is 305 meters (1,000 feet). Consult the frequency response graphs for signal rolloff at high frequencies with longer wiring.
Maintenance & Reliability
Regularly inspect the probe cable and connector for wear or damage. The PPS tip and stainless steel case offer excellent durability, but verify the O-ring seal (Viton) if the probe is subjected to differential pressure. The probe is not pressure tested before shipment; contact the custom design department if pressure testing is required for your application.
Keep the target surface clean and free from debris to maintain accurate readings. Periodically check the gap setting and recalibrate if necessary. With proper care, this probe provides long-term reliable service.
Compatibility & Integration
The 330904-00-10-50-02-00 is mechanically and electrically compatible with Bently Nevada's previous 3300 RAM proximity probe and extension cable. It works seamlessly with 3300 XL NSv Proximitor Sensors and existing monitoring systems. The miniature coaxial ClickLoc connector ensures a secure and stable connection.
Selection Guide & Purchasing Advice
Before ordering, verify that the 5.0 meter total length and M8x1 thread configuration meet your installation requirements. Confirm the unthreaded length (00 mm) and overall case length (100 mm) are suitable. PLC Source PRO offers this Bently Nevada 330904-00-10-50-02-00 module as new and original in factory packing, backed by a 12-month factory warranty.