The Bently Nevada 330906-02-12-05-02-05 belongs to the advanced 3300 NSv series of reverse mount proximity probes. Bently Nevada engineers designed this model specifically to outperform the older 3300 RAM probe in harsh chemical environments. Therefore, it serves as an ideal solution for process compressors and other challenging rotating machinery applications.
Additionally, this probe provides superior side-view characteristics when compared to the 3000-series 190 probe. Users can achieve more accurate gap measurements at the same target distance. The 330906-02-12-05-02-05 comes standard with 3/8-24 UNF threads, which ensures compatibility with most mounting fixtures. Its 0.5-meter total length offers flexibility for installations with limited space.
Furthermore, the entire transducer system incorporates gold-plated brass ClickLoc connectors. These connectors lock securely into place and effectively prevent loosening from vibration. The patented TipLoc molding method also guarantees a robust bond between the probe tip and the probe body. This design significantly enhances the probe's durability and long-term reliability.
The Bently Nevada 330906-02-12-05-02-05 delivers precise measurements across a linear range of 1.5 mm (60 mils). Specifically, this linear range begins at approximately 0.25 mm (10 mils) from the target and extends to 1.75 mm (70 mils). The corresponding output voltage spans from approximately -1 Vdc to -13 Vdc. For optimal performance, Bently Nevada recommends a gap setting of 1.0 mm (40 mils).
The probe's DC resistance measures 4.0 ± 0.5 ohms from the center conductor to the outer conductor. This consistent resistance ensures stable signal transmission. Moreover, the probe tip uses Polyphenylene sulfide (PPS) as its primary material, while the probe case consists of AISI 304 stainless steel. These materials provide excellent resistance to chemical degradation and physical wear.
For field wiring, this sensor accepts conductors from 0.2 to 1.5 mm² (16 to 24 AWG). When using ferrules, the recommended range narrows to 0.25 to 0.75 mm² (18 to 23 AWG). Bently Nevada suggests using three-conductor shielded triad cable for optimal noise immunity. The maximum allowable length between the 3300 XL NSv Proximitor Sensor and the monitor reaches 305 meters (1,000 feet). However, users should consult the frequency response graphs for signal rolloff considerations at higher frequencies with longer cable runs.
The 330906-02-12-05-02-05 operates reliably across a wide temperature spectrum. Its operating temperature range spans from -52°C to +177°C (-62°F to +351°F), and the storage temperature range matches these same limits. Nevertheless, users must exercise caution when exposing this probe to temperatures below -34°C (-30°F) for sustained periods, as this may cause premature failure of the pressure seal.
This reverse mount probe handles significant differential pressure between the probe tip and case. The sealing mechanism relies on a Viton O-ring, which provides excellent chemical compatibility and thermal stability. For mechanical installation, the maximum rated torque for this reverse mount probe reaches 22.6 N•m (200 in•lb), while Bently Nevada recommends a torque of 7.5 N•m (66 in•lb) for optimal mounting. The M10x1 thread configuration allows for a maximum thread engagement of 15 mm.
The complete system weighs approximately 14 to 150 grams (0.5 to 5.3 oz), depending on the specific cable length and configuration. This lightweight design simplifies installation and reduces stress on mounting hardware.
Proper installation of the Bently Nevada 330906-02-12-05-02-05 requires attention to several critical factors. First, ensure that the target surface is clean and free from debris or contaminants. Second, verify that the mounting threads are clean and undamaged before threading the probe into position. Third, apply the recommended torque of 7.5 N•m (66 in•lb) to avoid over-tightening or under-tightening.
When setting the initial gap, position the probe tip approximately 1.0 mm (40 mils) from the target surface. This recommended gap setting provides optimal linearity and sensitivity for most applications. Additionally, use the ClickLoc connector to establish a secure connection between the probe and the extension cable. The connector will audibly click when properly locked into place.
For field wiring connections, strip the conductors carefully and use appropriate ferrules for sizes between 18 and 23 AWG. Maintain proper shielding practices to minimize electrical noise interference. Furthermore, keep the total field wiring length within 305 meters (1,000 feet) to preserve signal integrity at higher frequencies. Remember that the 330906-02-12-05-02-05 works as part of a complete transducer system, so ensure compatibility with the corresponding Proximitor Sensor and monitor.
Bently Nevada 330906-02-12-05-02-05 3300 NSv Reverse Mount Probe (1 unit)
Pre-attached 0.5-meter cable with miniature coaxial ClickLoc connector
Installation instruction sheet (printed)
Protective shipping case
All orders ship via FedEx, UPS, or DHL with full tracking and insurance coverage. Express shipping options are available upon request.
Q1: What is the difference between the 3300 NSv probe and the 3300 RAM probe?
The 330906-02-12-05-02-05 offers increased chemical resistance compared to the 3300 RAM probe. This improvement makes the NSv model more suitable for process compressor applications where exposure to aggressive chemicals is common. Additionally, the NSv probe provides superior side-view characteristics for more accurate gapping at the same target distance.
Q2: Can I use this probe with existing 3300 series extension cables?
Yes, the Bently Nevada 330906-02-12-05-02-05 uses standard gold-plated brass ClickLoc connectors that are fully compatible with existing 3300 series extension cables. The ClickLoc design ensures a secure, vibration-resistant connection that prevents accidental disconnection during operation.
Q3: What is the recommended gap setting for this probe?
Bently Nevada recommends a gap setting of 1.0 mm (40 mils) for the 330906-02-12-05-02-05. This setting positions the probe within the optimal linear range, which spans from 0.25 mm to 1.75 mm (10 to 70 mils). Proper gapping ensures accurate vibration and position measurements.
Q4: What temperature limits should I observe with this probe?
The 330906-02-12-05-02-05 operates safely between -52°C and +177°C (-62°F to +351°F). However, sustained exposure to temperatures below -34°C (-30°F) may cause premature failure of the pressure seal. Therefore, users should avoid prolonged operation in extreme cold conditions.
Q5: How do I know if the ClickLoc connector is properly engaged?
The ClickLoc connector on the Bently Nevada 330906-02-12-05-02-05 produces an audible click when fully locked into place. Additionally, you should feel a positive mechanical stop when the connection is secure. This locking mechanism prevents the connection from loosening due to vibration, ensuring reliable signal transmission.
| Brand Name | |
| Model No. | 330906-02-12-05-02-05 |
| Product Type | Reverse Mount Probe |
| hasMerchantReturnPolicy | Adjust according to reality |
| Shippingdetails | Adjust according to reality |
