Bently Nevada 330902-00-50-05-02-05 Armored NSv Probe

Bently Nevada 330902-00-50-05-02-05 3300 NSv Armored Proximity Probe

Product Introduction

The Bently Nevada 330902-00-50-05-02-05 belongs to the 3300 NSv series of proximity probes and includes stainless steel armor for enhanced cable durability. Engineers select this armored version when the cable faces potential abrasion, impact, or harsh physical contact in tight installations. This probe offers a 0.5 meter total length with a 1/4-28 UNF thread, a 0.0 inch unthreaded length, and a 5.0 inch overall case length. Its miniature coaxial ClickLoc connector provides a secure signal connection, while the standard cable construction keeps the assembly reliable. The probe tip uses Polyphenylene sulfide (PPS), a material that resists chemicals and wear effectively. Additionally, the case is machined from AISI 304 stainless steel, and the armor adds an extra layer of mechanical protection. With multiple agency approvals, this probe meets global industrial safety standards. Its 75Ω coaxial FEP cable maintains signal quality over its 0.5 meter length. This sensor works exclusively with compatible NSv Proximitor sensors for optimal system performance.

Key Technical Specifications

The Bently Nevada 330902-00-50-05-02-05 delivers precise and repeatable measurements even in demanding conditions. Its probe tip material is PPS, which offers excellent dimensional stability and chemical resistance. The case material is AISI 304 SST, while the armor provides mechanical ruggedness for the cable. The probe cable is a 75Ω coaxial type with FEP insulation, available in total lengths of 0.5, 1, 5, or 7 meters. This particular model comes with a 0.5-meter cable. The DC resistance from the center conductor to the outer conductor measures 4.0 ± 0.5 ohms. Furthermore, the operating and storage temperature range spans from -52°C to +177°C. However, note that exposing the probe to temperatures below -34°C for extended periods may reduce the pressure seal's service life. The probe case thread is 1/4-28 UNF, with a maximum thread engagement length of 0.375 inches. The maximum rated torque for the case is 7.3 N•m, while the recommended torque is 5.1 N•m. For connector-to-connector connections, finger-tight is recommended, with a maximum torque of 0.565 N•m. The minimum bend radius for the cable is 25.4 mm, which applies whether the armor is present or not.

Mechanical and Environmental Ratings

This armored NSv probe handles differential pressure sealing via a Viton O-ring between the tip and case. Bently Nevada does not pressure-test each unit before shipment, but the design effectively seals against process pressure. The probe's pressure rating applies to static and dynamic conditions typical in compressor and turbine applications. Its temperature rating of -52°C to +177°C covers most industrial environments, including extreme cold and high-heat areas. Moreover, the armor provides extra resistance against physical damage, making it suitable for retrofit projects or locations with cable exposure risks. The unthreaded length option is 0.0 inches, and the overall case length is 5.0 inches. The total length option is 0.5 meters, which must match the compatible NSv Proximitor sensor. Therefore, do not use this probe with sensors designed for other cable lengths. The probe cable's FEP insulation resists high temperatures and chemicals, ensuring long-term reliability. Its coaxial design maintains signal integrity with appropriate shielding. The connector type is a miniature coaxial ClickLoc, which locks positively to prevent accidental disconnection.

Installation Guidelines

Proper installation of the Bently Nevada 330902-00-50-05-02-05 ensures accurate readings and long service life. First, clean the mounting surface and threads thoroughly before installation. Apply a suitable anti-seize compound to the 1/4-28 UNF threads to prevent galling. Next, thread the probe into the mounting hole by hand until finger-tight. Then, use a torque wrench to tighten it to the recommended 5.1 N•m. Do not exceed the maximum torque of 7.3 N•m, as this could damage the case or threads. For the connector, tighten it finger-tight only, with a maximum of 0.565 N•m. Ensure the cable bend radius stays above 25.4 mm to avoid damaging the internal conductors. Additionally, route the cable away from high-voltage wires and heat sources. Secure the cable using appropriate clamps or ties, but do not overtighten. When installing multiple probes, maintain adequate spacing to avoid cross-talk. Finally, connect the probe to its compatible NSv Proximitor sensor. Verify the air gap using a calibration fixture before startup. After installation, perform a system check to confirm output voltage matches the target gap.

Packaging List

Each package of the Bently Nevada 330902-00-50-05-02-05 includes the following items:

• 3300 NSv Armored Proximity Probe (assembly with 0.5 m cable)

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

• Standard cable (integral part of assembly)

• Installation instruction sheet (quick start guide)

• Anti-static protective bag for storage

Note: Calibration certificates and warranty documents are not included in the package. Please request them separately if needed.

Shipping Information

We ship all orders via FedEx, UPS, or DHL depending on your location and preference. Each probe is carefully packed in anti-static and shock-absorbent materials to prevent transit damage. Tracking numbers are provided within 24 hours of dispatch. International shipping typically takes 3–7 business days. Expedited options are available upon request.

Frequently Asked Questions (FAQ)

1. What is the advantage of the armored version 330902-00-50-05-02-05?
The Bently Nevada 330902-00-50-05-02-05 includes stainless steel armor over the cable, which protects against abrasion, impact, and crushing. This makes it ideal for installations where the cable may contact sharp edges or moving parts.

2. Can I use this 0.5-meter probe with a 1-meter Proximitor sensor?
No. This 0.5-meter probe works exclusively with the compatible NSv Proximitor sensor designed for 0.5-meter cables. Using it with other lengths will cause calibration errors and inaccurate measurements.

3. What is the recommended torque for the 1/4-28 UNF threads?
The recommended installation torque is 5.1 N•m (45 in•lb). The maximum allowable torque is 7.3 N•m (65 in•lb). Exceeding this limit can strip threads or damage the probe case.

4. Does the armor affect the cable's minimum bend radius?
No. The minimum bend radius remains 25.4 mm (1.0 inch) with or without the stainless steel armor. Always maintain this radius to prevent internal conductor damage.

5. How should I store this probe if not used immediately?
Store the probe in its original anti-static bag in a clean, dry area within the -52°C to +177°C temperature range. Avoid areas with extreme humidity or corrosive fumes to preserve the O-ring and cable insulation.