Bently Nevada 330901-22-90-05-02-00 3300 NSv Proximity Probe

Product Introduction

The Bently Nevada 330901-22-90-05-02-00 belongs to the 3300 NSv series, specifically designed for non-contact displacement and vibration monitoring in tight installations. This 1/4-28 UNF threaded probe offers a compact form factor without armor, making it ideal for small machinery or limited-space applications. Its 0.5 meter (20 inches) total length provides flexibility for short-distance mounting, while the 75 Ω coaxial FEP cable ensures stable signal transmission. Additionally, the miniature coaxial ClickLoc connector guarantees a quick and secure connection, minimizing installation time. The probe tip uses durable PPS material, and the AISI 304 stainless steel case resists corrosion in demanding environments. This model excludes agency approvals, offering a cost-effective solution for standard monitoring tasks.

Technical Specifications

Electrical Properties

The Bently Nevada 330901-22-90-05-02-00 probe shows a DC resistance of 4.0 ± 0.5 ohms between the center and outer conductors at 0.5 meter length. This low resistance preserves signal integrity, ensuring accurate measurements over the entire cable run. The probe cable is a 75 Ω coaxial type with FEP insulation, which withstands high temperatures and chemical exposure. Furthermore, the connector-to-connector torque should be finger-tight, with a maximum of 0.565 N•m (5 in•lb) to avoid damaging the connector interface.

Dimensional Details

This model includes a 1/4-28 UNF thread with a maximum engagement length of 0.375 inches (9.5 mm). The unthreaded length option is 2.2 inches, while the overall case length measures 9.0 inches. Total probe length is 0.5 meter (20 inches) , suitable for short-reach mounting scenarios. The minimum bend radius for the coaxial cable is 25.4 mm (1.0 inch) , allowing flexible routing without performance loss.

Material Composition

The probe tip employs Polyphenylene sulfide (PPS) , a high-strength polymer that resists abrasion and chemical degradation. Its case is fabricated from AISI 304 stainless steel, providing excellent durability and oxidation resistance. The cable insulation uses fluoroethylene propylene (FEP), which maintains dielectric properties across the full operating range. Additionally, a Viton O-ring creates a pressure seal between the tip and case, preventing fluid ingress.

Environmental and Mechanical Ratings

Temperature and Pressure Limits

The Bently Nevada 330901-22-90-05-02-00 operates and stores between -52°C and +177°C (-62°F to +351°F) . However, sustained exposure below -34°C (-30°F) may shorten the pressure seal's lifespan. This probe is engineered to seal differential pressure between tip and case, though it is not pressure-tested before delivery. For applications requiring verified seals, please consult our custom design team for optional testing services.

Torque Specifications

For the 1/4-28 threaded case, the recommended installation torque is 5.1 N•m (45 in•lb) , while the maximum rated torque is 7.3 N•m (65 in•lb) . Adhering to these values prevents thread galling or case distortion. When attaching the ClickLoc connector, apply only finger-tight force—never exceed 0.565 N•m (5 in•lb) to protect the connector pins.

Installation Guidelines

Mounting Preparation

Before installing the Bently Nevada 330901-22-90-05-02-00 probe, inspect the mounting hole for burrs or contaminants. Ensure the thread engagement does not surpass 0.375 inches to avoid bottoming out. Use a thread sealant compatible with the operating temperature range to maintain the pressure barrier. Additionally, verify that the cable bend radius stays above 25.4 mm to prevent signal attenuation.

Cable Routing and Protection

Route the coaxial FEP cable away from high-voltage lines and rotating machinery to minimize electromagnetic interference and physical wear. Secure the cable with appropriate clamps, but avoid compressing the insulation. For best results, maintain gentle curves when changing direction, respecting the minimum bend radius. Moreover, label both cable ends clearly to simplify future troubleshooting.

Connector Attachment

Align the miniature coaxial ClickLoc connector with the mating port and push until it clicks into place. Hand-tighten the coupling nut to finger-tight torque—do not use pliers or wrenches. After connection, perform a continuity test to confirm proper electrical contact before energizing the system.

Packaging List

• Bently Nevada 330901-22-90-05-02-00 probe assembly (1 unit)

• Protective cap for the connector (1 unit)

• Quick-start installation guide (1 copy)

Note: The package does not include mounting brackets, extension cables, or certification paperwork.

Shipping Information

All shipments are handled via FedEx, UPS, or DHL with real-time tracking numbers provided. Standard delivery typically takes 3 to 7 business days, depending on destination. Expedited shipping options are available upon request.

Frequently Asked Questions (FAQ)

Q1: What is the total length of the Bently Nevada 330901-22-90-05-02-00 probe?
A1: The total probe length is 0.5 meter (20 inches) , as specified by the "05" option in the model number.

Q2: Can this probe operate in high-pressure environments?
A2: The probe is designed to seal differential pressure, but it is not pressure-tested at the factory. For high-pressure applications, contact our custom design team for optional pressure testing.

Q3: What is the recommended torque for the 1/4-28 threaded case?
A3: The recommended installation torque is 5.1 N•m (45 in•lb) , with a maximum of 7.3 N•m (65 in•lb) to avoid thread damage.

Q4: Is the cable compatible with extension cables?
A4: Yes, the 75 Ω coaxial cable can be extended using Bently Nevada-approved extension cables, as long as the total system capacitance remains within driver specifications.

Q5: What happens if the probe is exposed to temperatures below -34°C for a long time?
A5: Prolonged exposure below -34°C may degrade the Viton O-ring seal. Consider using thermal insulation or selecting a probe rated for lower temperatures for such conditions.