Bently Nevada 330906-02-12-10-02-05 NSv Reverse Mount Probe

Bently Nevada 330906-02-12-10-02-05 3300 NSv Reverse Mount Probe

Product Introduction

The Bently Nevada 330906-02-12-10-02-05 belongs to the advanced 3300 NSv series of reverse mount proximity probes. This model serves as a direct upgrade over the older 3300 RAM probe, primarily due to its enhanced chemical resistance. Therefore, it performs reliably in demanding environments like process compressors. Furthermore, its side-view characteristics surpass those of the 3000-series 190 probe when you set the gap at the same target distance. This particular variant, 330906-02-12-10-02-05, comes with a standard 1.0-meter total length and a 3/8-24 UNF thread. It also incorporates the reliable ClickLoc connector system, which ensures a secure and vibration-proof connection.

Technical Specifications of the 330906-02-12-10-02-05

Electrical Parameters

The 330906-02-12-10-02-05 operates with a DC resistance of 4.2 ± 0.5 ohms between the center and outer conductors. Its linear range spans 1.5 mm (60 mils), beginning at approximately 0.25 mm from the target. Consequently, the effective measurement window is from 0.25 to 1.75 mm, which corresponds to an output of roughly -1 to -13 Vdc. For optimal performance, Bently Nevada recommends a standard gap setting of 1.0 mm (40 mils). Additionally, the system supports field wiring from 0.2 to 1.5 mm² (16 to 24 AWG). For best results, we recommend using a three-conductor shielded triad cable. The maximum allowable cable length between the proximity sensor and the monitor is 305 meters (1,000 feet), though you should consult the frequency response graphs for signal rolloff at higher frequencies when using longer runs.

Mechanical and Material Properties

Specifically, the probe tip is constructed from Polyphenylene sulfide (PPS), while the probe case utilizes robust AISI 304 stainless steel. For installation, the maximum rated torque for this reverse mount probe is 22.6 N•m (200 in•lb), but we recommend applying only 7.5 N•m (66 in•lb) to prevent damage. The system weight for this probe model typically falls between 14 and 150 grams, depending on the cable configuration. Moreover, the M10x1 thread option allows a maximum thread engagement length of 15 mm. The patented TipLoc molding method creates a durable bond between the tip and the body, which extends the operational life of the sensor.

Environmental Limits and Operating Conditions

Temperature and Pressure Ratings

The Bently Nevada 330906-02-12-10-02-05 withstands a wide operating temperature range from -52°C to +177°C (-62°F to +351°F). Similarly, its storage temperature range matches these same limits. However, you should avoid exposing this probe to temperatures below -34°C (-30°F) for extended periods, as this may cause premature seal failure. Meanwhile, the probe is designed to seal differential pressure between the tip and the case, using a Viton O-ring as the primary sealing material. This design ensures reliable operation even in high-pressure process environments.

Chemical and Environmental Resistance

Compared to the 3300 RAM probe, the 3300 NSv series offers significantly improved chemical resistance. This advantage allows the 330906-02-12-10-02-05 to perform well in applications involving aggressive media. Besides, the gold-plated brass ClickLoc connectors on all system components resist corrosion and maintain signal integrity over time. These connectors lock firmly into place, which prevents loosening due to vibration or thermal cycling.

Installation Guidelines for the 3300 NSv Probe

Mounting and Torque Requirements

First, ensure the mounting surface is clean and free of debris before installing the probe. Next, thread the 330906-02-12-10-02-05 carefully into the mounting hole, using only hand pressure initially. Then, use a torque wrench to tighten the probe to the recommended setting of 7.5 N•m (66 in•lb). Remember that exceeding the maximum rated torque of 22.6 N•m (200 in•lb) may damage the probe case or thread. Finally, connect the ClickLoc connector by pushing it in until you hear a distinct click, which confirms a secure lock.

Wiring and Cable Management

For wiring, use a three-conductor shielded triad cable with conductor sizes ranging from 0.2 to 1.5 mm² (16 to 24 AWG). If you use ferrules, the acceptable range becomes 0.25 to 0.75 mm² (18 to 23 AWG). We recommend routing the cable away from high-voltage lines and heat sources to minimize interference. Besides, you can extend the wiring up to 305 meters (1,000 feet) between the sensor and the monitor, but longer runs may affect high-frequency response.

Packaging and Delivery Information

Packaging List

Each unit of the Bently Nevada 330906-02-12-10-02-05 includes the following items in the package:

• 3300 NSv reverse mount probe assembly (1.0-meter cable, 3/8-24 UNF threads)

• Miniature coaxial ClickLoc connector (pre-installed on cable)

• Installation instruction sheet (quick-start guide)

• Protective shipping cap for probe tip

Shipping and Logistics

We ship all orders via FedEx, UPS, or DHL, depending on your location and preference. Each package is carefully cushioned to prevent damage during transit. We usually dispatch orders within 24 hours of payment confirmation. Tracking information is provided as soon as the shipment leaves our warehouse.

Frequently Asked Questions

1. What is the difference between the 3300 NSv probe and the 3300 RAM probe?
The 3300 NSv probe offers superior chemical resistance and improved side-view characteristics compared to the 3300 RAM probe. This makes the NSv series more suitable for process compressor applications where aggressive media may be present.

2. Can I use the 330906-02-12-10-02-05 with a different cable length?
No, this specific model comes with a fixed 1.0-meter cable. However, you can extend the field wiring up to 305 meters (1,000 feet) using a three-conductor shielded triad cable between the sensor and the monitor.

3. What torque should I apply when installing this reverse mount probe?
We recommend applying 7.5 N•m (66 in•lb) for optimal installation. The maximum rated torque is 22.6 N•m (200 in•lb), and exceeding this value may cause mechanical damage to the probe.

4. Is the 330906-02-12-10-02-05 suitable for high-pressure environments?
Yes, the probe is designed to seal differential pressure between the tip and case. It uses a Viton O-ring sealing material, which provides reliable performance in pressurized systems.

5. What is the recommended gap setting for this probe?
The recommended gap setting for the 330906-02-12-10-02-05 is 1.0 mm (40 mils). This setting positions the probe within its optimal linear range of 0.25 to 1.75 mm for accurate measurements.