Bently Nevada 330907-05-30-05-12-CN NSv Reverse Mount Probe

Bently Nevada 330907-05-30-05-12-CN 3300 NSv Reverse Mount Probe

Technical Specifications of the 3300 NSv Probe

The Bently Nevada 330907-05-30-05-12-CN operates within a linear range of 1.5 mm (60 mils). This range starts at approximately 0.25 mm (10 mils) from the target. It then extends from 0.25 mm to 1.75 mm (10 to 70 mils). The output voltage in this range is roughly -1 to -13 Vdc.

Additionally, the recommended gap setting for this probe is 1.0 mm (40 mils). The probe’s DC resistance from the center conductor to the outer conductor (RPROBE) measures 4.0 ± 0.5 ohms for the 0.5-meter length.

For field wiring, this sensor works with 0.2 to 1.5 mm² (16 to 24 AWG) wire. When using ferrules, you should use 0.25 to 0.75 mm² (18 to 23 AWG). We recommend using a three-conductor shielded triad cable. The maximum cable length between the 3300 NSv Proximitor Sensor and the monitor is 305 meters (1,000 feet).

Mechanical and Environmental Features

The probe tip material is Polyphenylene sulfide (PPS). Its case uses AISI 304 stainless steel (SST). The Bently Nevada 330907-05-30-05-12-CN has a maximum rated torque of 22.6 N•m (200 in•lb). However, the recommended installation torque is only 7.5 N•m (66 in•lb).

Furthermore, the probe case thread is M10x1 with 15 mm maximum thread engagement. The operating and storage temperature range is -52°C to +177°C (-62°F to +351°F). Be careful when exposing this probe to temperatures below -34°C (-30°F) for long periods. Such conditions may cause premature failure of the pressure seal.

The 3300 NSv reverse mount probe also seals differential pressure between the tip and case. It uses a Viton O-ring as its sealing material. This design works well in many process compressor applications.

Country-Specific Approval (CN) for Local Compliance

The 330907-05-30-05-12-CN includes agency approval option CN (Country Specific). This version meets local regulatory requirements for use in China. Therefore, it simplifies procurement for projects that need domestic compliance. Other approval options remain available upon request.

Installation Guidelines for the Reverse Mount Probe

First, ensure the target surface is clean and smooth before installing the Bently Nevada 330907-05-30-05-12-CN. Next, apply the recommended torque of 7.5 N•m (66 in•lb). Do not exceed the maximum rated torque of 22.6 N•m (200 in•lb). Over-tightening may damage the probe case or threads.

Then, connect the probe using its miniature coaxial ClickLoc connector with FluidLoc cable. The ClickLoc connector locks into place firmly. This prevents any loosening from vibration. Meanwhile, the patented TipLoc molding method creates a strong bond between the probe tip and body.

For optimal performance, set the gap at 1.0 mm (40 mils) from the target. Use a suitable gap setting tool or a calibrated proximity system. After installation, verify the output voltage falls within the -1 to -13 Vdc range.

Advantages Over Other Probes

The 3300 NSv probe offers increased chemical resistance compared to the 3300 RAM probe. This makes it suitable for many process compressor environments. Moreover, its side-view characteristics are better than those of the 3000-series 190 probe. You will notice this superiority when gapping the 330907-05-30-05-12-CN at the same distance from the target.

All transducer system components include gold-plated brass ClickLoc connectors. These connectors provide reliable signal transmission. They also resist corrosion in harsh industrial settings.

Packaging List

• 1 x Bently Nevada 330907-05-30-05-12-CN 3300 NSv Reverse Mount Probe (0.5m length, M10x1 thread)

• 1 x Miniature coaxial ClickLoc connector (attached)

• 1 x FluidLoc cable (integrated)

• 1 x Installation instruction sheet

Note: No certificates or warranty documents are included in this package.

Frequently Asked Questions (FAQ)

1. Can I use the Bently Nevada 330907-05-30-05-12-CN in a high-vibration environment?
Yes, this probe works well under vibration. The ClickLoc connector locks securely and prevents loosening.

2. What is the difference between the 330907-05-30-05-12-CN and the standard version?
The -CN suffix indicates country-specific agency approval for China. All other technical specifications remain identical.

3. What is the maximum extension cable length for this 3300 NSv probe?
You can use up to 305 meters (1,000 feet) of field wiring between the Proximitor Sensor and the monitor.

4. Does the 330907-05-30-05-12-CN require special shielding?
Yes, we recommend using a three-conductor shielded triad cable for best noise immunity and signal integrity.

5. What happens if I exceed the recommended torque of 7.5 N•m?
Exceeding the recommended torque may strip the threads or crack the probe case. Always stay within the 7.5 N•m limit.