Product Overview
When process compressor applications demand reliable vibration monitoring, the Bently Nevada 330905-00-08-10-02-05 3300 NSv Proximity Probe delivers precise, repeatable measurements. This industrial automation module is a direct replacement for the previous 3300 RAM probe, offering enhanced chemical resistance and superior side-view characteristics. With a 1.0-meter (39-inch) total length and M10x1 thread without armor, this probe is engineered for demanding environments.
The 330905-00-08-10-02-05 features a miniature coaxial ClickLoc connector and standard cable, ensuring secure and quick installation. Its increased chemical resistance compared to the 3300 RAM probe makes it ideal for process compressor applications where exposure to aggressive media is common.
Key Features
- Mechanically and electrically interchangeable with Bently Nevada's previous 3300 RAM probe and extension cable.
- Superior side-view characteristics compared to the 3000-series 190 probe.
- Enhanced chemical resistance for process compressor use.
- Probe tip material: Polyphenylene sulfide (PPS).
- Probe case material: AISI 304 stainless steel (SST).
- Operating and storage temperature range: -52°C to +177°C (-62°F to +351°F).
- Probe pressure seal with Viton O-ring (not pressure tested prior to shipment).
Technical Specifications
The following specifications are directly from the manufacturer for the Bently Nevada 330905-00-08-10-02-05 3300 NSv Proximity Probe:
| Parameter |
Value |
| Linear Range |
1.5 mm (60 mils), starting at approximately 0.25 mm (10 mils) from target (0.25 to 1.75 mm / 10 to 70 mils, approx. -1 to -13 Vdc) |
| Recommended Gap Setting |
1.0 mm (40 mils) |
| Incremental Scale Factor (ISF) |
7.87 V/mm (200 mV/mil) +12.5%/-20% including interchangeability error (measured in 0.25 mm increments over linear range) |
| Deviation from Best Fit Straight Line (DSL) |
Less than ±0.06 mm (±2.3 mils) |
| Frequency Response |
0 to 10 kHz: +0, -3 dB typical (with up to 305 meters / 1000 feet of field wiring) |
| Probe DC Resistance (1.0 m length) |
4.2 ± 0.5 ohms (center conductor to outer conductor) |
| Extension Cable DC Resistance |
Center conductor: 0.220 Ω/m (0.067 Ω/ft); 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) [0.25 to 0.75 mm² (18 to 23 AWG) with ferrules]; recommended three-conductor shielded triad cable; maximum length 305 m (1000 ft) between sensor and monitor |
| Target Size (flat target) |
Minimum: 8.9 mm (0.35 in) diameter; Recommended minimum: 13 mm (0.5 in) diameter |
| Probe Cable Specification |
75 Ω coaxial, fluoroethylene propylene (FEP) insulated; available total probe lengths: 0.5, 1, 5, or 7 meters |
| Recommended Torque |
Finger tight; Maximum torque: 0.56 N•m (5 in•lb) |
| Minimum Bend Radius (with or without SST armor) |
25.4 mm (1.0 in) |
| Operating Temperature |
-52°C to +177°C (-62°F to +351°F) |
| Storage Temperature |
-52°C to +177°C (-62°F to +351°F) |
| Probe Case Torque (M10x1, first three threads) |
Maximum rated: 22.6 N•m (200 in•lb); Recommended: 7.5 N•m (66 in•lb) |
| Probe Case Thread Engagement |
M10x1, maximum length: 15 mm |
Industry Applications
The Bently Nevada 330905-00-08-10-02-05 is designed for critical rotating machinery monitoring. Typical applications include:
-
Process Compressors: The increased chemical resistance allows reliable operation in aggressive media environments, reducing downtime.
-
Turbomachinery: Shaft vibration and axial position monitoring in steam and gas turbines.
-
Pumps and Fans: Detecting shaft displacement and dynamic motion to prevent catastrophic failures.
In each case, the probe's linear range and high accuracy (ISF of 7.87 V/mm) ensure precise data for condition monitoring systems.
Installation & Setup Guidance
Proper installation is critical for optimal performance of the 330905-00-08-10-02-05.
- Mount the probe using the M10x1 thread; apply the recommended torque of 7.5 N•m (66 in•lb) for the first three threads. Do not exceed 22.6 N•m (200 in•lb).
- Set the initial gap to 1.0 mm (40 mils) from the target surface. Use shims or a feeler gauge for accuracy.
- Ensure the target size meets the recommended minimum of 13 mm (0.5 in) diameter. For smaller shafts, consult the scale factor adjustment notes.
- Route the probe cable with a minimum bend radius of 25.4 mm (1.0 in) to avoid damage.
- Use the specified ClickLoc connector; ensure it is fully seated and locked.
Maintenance & Reliability
Routine inspection of the probe and cable is essential for long-term reliability. Check for signs of chemical attack, especially in process compressor environments. Inspect the cable for cuts or abrasions, and verify the connector integrity periodically. The probe's PPS tip and stainless steel case offer excellent durability, but regular visual checks can prevent unexpected failures. The wide operating temperature range (-52°C to +177°C) ensures stable performance in extreme conditions, reducing lifecycle costs.
Compatibility & Integration
The Bently Nevada 330905-00-08-10-02-05 is fully compatible with Bently Nevada's 3300 XL NSv Proximitor Sensor and existing 3300 series monitoring systems. It is mechanically and electrically interchangeable with the previous 3300 RAM probe and extension cable, allowing seamless upgrades. The probe's output can be integrated into most vibration monitoring systems that accept eddy-current probe signals. For field wiring, use a three-conductor shielded triad cable up to 305 meters (1000 feet) between the sensor and monitor.
Selection Guide & Purchasing Advice
Before purchasing, verify your system's requirements: thread size (M10x1), total length (1.0 meter), connector type (ClickLoc), and agency approval (Multiple Approvals). Confirm that the probe's linear range and gap setting match your application's needs. PLC Source PRO ensures you receive a new, original product in factory packing with a 12-month warranty. For bulk orders or custom pressure testing, contact our sales team for assistance.