Bently Nevada 330907-05-30-70-02-00 NSv Probe 7.0m

Bently Nevada 330907-05-30-70-02-00 3300 NSv Reverse Mount Probe

Product Introduction

The Bently Nevada 330907-05-30-70-02-00 represents a specialized variant within the 3300 NSv reverse mount probe family. This model distinguishes itself with an extended 7.0-meter cable length, making it ideal for installations where the proximity sensor must be positioned far from the monitoring equipment. Compared to the older 3300 RAM probe, this series offers significantly better chemical resistance. Therefore, it excels in process compressor environments where exposure to aggressive media is common. Furthermore, the side-view characteristics outperform those of the 3000-series 190 probe when you gap the sensor at the same distance from the target. The 330907-05-30-70-02-00 uses M10X1 threads and incorporates the reliable ClickLoc connector system for a secure, vibration-proof connection.

Technical Specifications of the 330907-05-30-70-02-00

Electrical Parameters

The 330907-05-30-70-02-00 exhibits a DC resistance of 5.9 ± 0.9 ohms measured from the center conductor to the outer conductor. This value accounts for the extended 7.0-meter cable length. The linear range spans 1.5 mm (60 mils), beginning at approximately 0.25 mm from the target surface. Consequently, the useful measurement window extends from 0.25 to 1.75 mm, producing an output voltage of roughly -1 to -13 Vdc. For optimal accuracy, Bently Nevada recommends a gap setting of 1.0 mm (40 mils). Additionally, the system accepts field wiring from 0.2 to 1.5 mm² (16 to 24 AWG). When using ferrules, the acceptable range becomes 0.25 to 0.75 mm² (18 to 23 AWG). A three-conductor shielded triad cable delivers the best performance for extended runs.

Mechanical and Material Properties

The probe tip uses Polyphenylene sulfide (PPS) for excellent dimensional stability and chemical resistance. Meanwhile, the probe case is manufactured from AISI 304 stainless steel, providing robust mechanical protection. For installation, the maximum rated torque for this reverse mount probe is 22.6 N•m (200 in•lb). However, we recommend applying only 7.5 N•m (66 in•lb) to avoid over-stressing the threads or case. The system weight for the 330907-05-30-70-02-00 typically ranges from 14 to 150 grams, with the longer cable contributing to the higher end of this range. The M10X1 thread option permits a maximum thread engagement of 15 mm. The patented TipLoc molding method creates an exceptionally durable bond between the probe tip and the body, ensuring long-term reliability.

Environmental Limits and Operating Conditions

Temperature and Pressure Ratings

The Bently Nevada 330907-05-30-70-02-00 operates reliably across a broad temperature spectrum from -52°C to +177°C (-62°F to +351°F). Storage temperatures fall within this same range. Nevertheless, you must avoid exposing the probe to temperatures below -34°C (-30°F) for sustained periods, as this condition may lead to premature pressure seal failure. The probe is specifically designed to seal differential pressure between the tip and the case. A Viton O-ring serves as the primary sealing element, which ensures dependable performance in pressurized process environments.

Chemical and Environmental Resistance

This 3300 NSv probe offers markedly improved chemical resistance compared to the earlier 3300 RAM probe. This advantage makes the 330907-05-30-70-02-00 suitable for applications involving lubricating oils, refrigerants, and other aggressive chemicals commonly found in compressor systems. Moreover, the gold-plated brass ClickLoc connectors resist corrosion and maintain low contact resistance over time. These connectors lock securely into place, effectively preventing loosening caused by vibration or thermal expansion and contraction cycles.

Installation Guidelines for the 3300 NSv Probe

Mounting and Torque Requirements

Begin by inspecting the mounting hole and cleaning it thoroughly to remove any debris or burrs. Then, carefully thread the 330907-05-30-70-02-00 into the mounting hole by hand until it seats properly. Next, use a calibrated torque wrench to tighten the probe to the recommended setting of 7.5 N•m (66 in•lb). Exercise caution not to exceed the maximum rated torque of 22.6 N•m (200 in•lb), as this may cause permanent damage. Finally, connect the ClickLoc connector by pushing it firmly until you hear a distinct clicking sound, which confirms that the connection is fully locked.

Cable Management and Routing

Given the 7.0-meter cable length, proper cable management becomes particularly important. Route the cable away from high-voltage power lines, variable frequency drives, and other sources of electromagnetic interference. Use cable ties or clamps to secure the cable at regular intervals, but avoid over-tightening. The maximum allowable distance between the sensor and the monitor is 305 meters (1,000 feet) using field wiring. However, you should consult the frequency response graphs for signal rolloff characteristics when using longer wiring runs.

Packaging and Delivery Information

Packaging List

Each unit of the Bently Nevada 330907-05-30-70-02-00 includes the following items:

• 3300 NSv reverse mount probe assembly with 7.0-meter cable and M10X1 threads

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

• Quick-start installation guide

• Protective shipping cap for the probe tip

Shipping and Logistics

We dispatch all orders via FedEx, UPS, or DHL to ensure fast and reliable delivery. Each package is carefully protected with adequate cushioning materials to prevent transit damage. Orders typically ship within 24 hours of payment confirmation. You will receive tracking information via email as soon as your order leaves our warehouse.

Frequently Asked Questions

1. Why would I choose the 330907-05-30-70-02-00 over a shorter cable version?
This model features a 7.0-meter cable, which is ideal when the mounting location is far from your monitoring rack. This extended length eliminates the need for additional junction boxes or intermediate connections, simplifying installation and reducing potential failure points.

2. Can I cut the cable to a shorter length if needed?
We strongly advise against cutting the cable, as this will alter the probe's calibrated DC resistance and affect measurement accuracy. The 330907-05-30-70-02-00 is factory-calibrated with its specific 7.0-meter cable length.

3. What is the difference between the 3300 NSv and the 3300 RAM probe?
The 3300 NSv probe offers enhanced chemical resistance and superior side-view characteristics compared to the 3300 RAM probe. These improvements make the NSv series better suited for process compressor applications where chemical exposure is a concern.

4. What torque should I use when installing this reverse mount probe?
Apply 7.5 N•m (66 in•lb) for standard installation. The maximum allowable torque is 22.6 N•m (200 in•lb). Exceeding this limit may cause thread damage or probe case deformation.

5. Is the 330907-05-30-70-02-00 suitable for use in hazardous areas?
The agency approval option for this specific model is "00," which indicates "Not required." If you need hazardous area certifications, please consider other ordering options with appropriate approval codes.