Bently Nevada 330907-05-30-05-12-00 Reverse Mount Probe Overview

The Bently Nevada 330907-05-30-05-12-00 is a 3300 NSv reverse mount probe made in the USA. This probe features M10X1 threads for secure installation in metric threaded ports. Total length option 05 provides 0.5 meter (20 inches) of cable for short-reach applications. Connector option 12 specifies a miniature coaxial ClickLoc connector with FluidLoc cable. Agency approval option 00 indicates no hazardous area certifications are required. Therefore, this version suits general industrial environments only. Compared to the 3300 RAM probe, the NSv probe offers increased chemical resistance. As a result, this probe works well in many process compressor applications.

Technical Specifications

The Bently Nevada 330907-05-30-05-12-00 has a linear range of 1.5 mm (60 mils) . Specifically, the linear range begins at approximately 0.25 mm (10 mils) from the target. It then extends from 0.25 to 1.75 mm (10 to 70 mils) . This corresponds to approximately -1 to -13 Vdc output. The recommended gap setting is 1.0 mm (40 mils) for optimal performance.

Now consider the probe DC resistance specifications. For the 330907-05-30-05-12-00 with 0.5 meter length, resistance from the center conductor to the outer conductor (RPROBE) is 4.0 ± 0.5 ohms. This consistent resistance ensures reliable signal transmission. The FluidLoc cable option prevents oil and other liquids from leaking out of the machine through the cable interior.

Field wiring requirements are also important for proper installation. Use 0.2 to 1.5 mm² (16 to 24 AWG) wire. When using ferrules, the range becomes 0.25 to 0.75 mm² (18 to 23 AWG) . Three-conductor shielded triad cable is recommended for best performance. Maximum cable length between the Proximitor sensor and monitor reaches 305 meters (1,000 feet) . However, check the frequency response graphs for signal rolloff at high frequencies when using longer lengths.

Mechanical Specifications

The Bently Nevada 330907-05-30-05-12-00 uses high quality materials throughout. Probe tip material is Polyphenylene sulfide (PPS) for chemical resistance. Probe case material is AISI 304 stainless steel (SST) for durability. The maximum rated torque for reverse mount probes is 22.6 N•m (200 in•lb) . However, the recommended torque is only 7.5 N•m (66 in•lb) . Therefore, do not overtighten during installation. Maximum length of thread engagement for M10x1 threads is 15 mm. System weight varies from approximately 14 to 150 g (0.5 to 5.3 oz) depending on configuration. This short 0.5 meter version weighs approximately 80 grams.

Connector & FluidLoc Technology

All components of the transducer system use gold-plated brass ClickLoc connectors. These ClickLoc connectors lock into place when mated. As a result, they prevent the connection from loosening due to vibration. This feature is critical for rotating machinery applications. The FluidLoc cable option prevents oil and other liquids from leaking out of the machine through the cable interior. Consequently, it is ideal for turbine and compressor applications where oil migration is a concern.

In addition, the patented TipLoc molding method provides a robust bond between the probe tip and the probe body. This eliminates a common failure point found in other probe designs. The Bently Nevada 330907-05-30-05-12-00 comes with M10X1 threads for metric installations.

Temperature & Pressure Ratings

The Bently Nevada 330907-05-30-05-12-00 operates across an extremely wide temperature range. Specifically, operating temperature spans -52°C to +177°C (-62°F to +351°F) . Storage temperature is equally broad at -52°C to +177°C (-62°F to +351°F) . However, note an important limitation. Exposing the probe to temperatures below -34°C (-30°F) for a sustained period may cause premature seal failure. Therefore, avoid prolonged cold exposure below this threshold.

Regarding pressure capabilities, 3300 NSv probes seal differential pressure between the probe tip and case. The probe sealing material consists of a Viton O-ring for chemical compatibility. This design suits many process compressor environments.

Key Features & Benefits

• FluidLoc cable sealing – The 330907-05-30-05-12-00 prevents oil leaks through the cable interior.

• Increased chemical resistance – Outperforms RAM probes in harsh process compressor media.

• Superior side-view characteristics – Better performance than 3000-series 190 probes at same gap distance.

• ClickLoc connector – Gold-plated brass connector locks firmly to prevent loosening.

• TipLoc molding method – Patented technology creates a robust probe tip to body bond.

• Short cable length – 0.5 meter length suits tight installations with nearby Proximitor sensors.

Installation Guidelines

Follow these steps to install the Bently Nevada 330907-05-30-05-12-00 correctly. First, clean the M10X1 mounting hole threads thoroughly before installation. Second, apply anti-seize compound to the probe threads if recommended. Third, thread the probe into the mounting hole by hand initially. Fourth, tighten the probe to the recommended torque of 7.5 N•m (66 in•lb) . Do not exceed the maximum rated torque of 22.6 N•m. Fifth, connect the ClickLoc connector to the extension cable until it clicks into place. Finally, verify the gap setting is approximately 1.0 mm (40 mils) from the target.

Use three-conductor shielded triad cable for field wiring between the Proximitor and monitor. Keep field wiring length under 305 meters (1,000 feet) for best signal integrity. Above all, avoid sustained operation below -34°C to protect the Viton O-ring pressure seal.

Package Contents

Your shipment includes the following items:

• 1 x Bently Nevada 330907-05-30-05-12-00 NSv reverse mount probe with FluidLoc cable

• 1 x Installation instruction sheet with torque specifications

• 2 x Replacement Viton O-rings for pressure seal maintenance

• 1 x ClickLoc connector dust cap for protection when disconnected

No extension cable or Proximitor sensor is included with this probe. Therefore, you must order these separately based on your system requirements. Likewise, no mounting hardware is provided.

Frequently Asked Questions (FAQ)

1. What is the FluidLoc option on this probe?
The FluidLoc option on the 330907-05-30-05-12-00 prevents oil leaks through the cable interior. This is critical for compressor applications where oil migration is a concern.

2. What is the difference between reverse mount and standard probes?
Reverse mount probes like the 330907-05-30-05-12-00 install from the outside of the machine casing. Therefore, they suit applications where internal access is limited.

3. Why is the minimum operating temperature limited to -34°C for long periods?
Extended exposure below -34°C may cause premature failure of the Viton O-ring pressure seal. Therefore, avoid sustained low temperature operation with the 330907-05-30-05-12-00.

4. How do I know when the ClickLoc connector is fully engaged?
The ClickLoc connector produces an audible "click" sound when fully locked. Additionally, you will feel a tactile snap as the connector engages properly.

5. What is the recommended target material for this probe?
Bently Nevada recommends AISI 4140 steel targets for best linearity. Using other target materials will change the output characteristics of the 330907-05-30-05-12-00.

Why Choose the Bently Nevada 330907-05-30-05-12-00?

This 3300 NSv reverse mount probe delivers superior performance with advanced fluid sealing. For starters, the Bently Nevada 330907-05-30-05-12-00 includes FluidLoc cable technology to prevent oil leaks. Its increased chemical resistance outperforms RAM probes in process compressor applications. The side-view characteristics also exceed those of the older 3000-series 190 probes. M10X1 threads provide secure mounting in standard metric ports. Furthermore, the 0.5 meter cable length suits installations with nearby Proximitor sensors. ClickLoc connectors with gold-plated brass construction prevent vibration loosening. The patented TipLoc molding method ensures a durable probe tip bond. Additionally, the wide temperature range from -52°C to +177°C suits extreme environments. Most importantly, the Viton O-ring seals differential pressure effectively for compressor applications.

Order the Bently Nevada 330907-05-30-05-12-00 today for your reverse mount proximity measurement needs. This probe is perfect for process compressors, steam turbines, and other rotating machinery where FluidLoc oil sealing and chemical resistance matter most.