Bently Nevada 330902-00-38-05-02-00 3300 NSv Armored Probe

Product Introduction

The Bently Nevada 330902-00-38-05-02-00 belongs to the 3300 NSv series, specifically engineered with stainless steel armor for superior cable protection in demanding industrial settings. This 1/4-28 UNF threaded probe offers a robust construction without compromising measurement accuracy for non-contact vibration and position monitoring. Its 0.5 meter (20 inches) total length includes a 75 Ω coaxial FEP cable, ensuring stable signal transmission even in electrically noisy environments. Furthermore, the miniature coaxial ClickLoc connector guarantees a secure and rapid connection, reducing installation downtime. The probe tip uses durable PPS material, while the AISI 304 stainless steel case and armor provide exceptional corrosion resistance. This model excludes agency approvals, offering a cost-effective solution for standard monitoring applications where cable durability is paramount.

Technical Specifications

Electrical Properties

The Bently Nevada 330902-00-38-05-02-00 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 displacement measurements across the entire cable run. The probe cable is a 75 Ω coaxial type with FEP insulation, which withstands high temperatures and chemical attack. Additionally, the connector-to-connector torque should be finger-tight, with a maximum of 0.565 N•m (5 in•lb) to prevent damage to 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 0 inches, while the overall case length measures 3.8 inches. Total probe length is 0.5 meter (20 inches) , suitable for short-reach mounting configurations. The minimum bend radius for the armored cable is 25.4 mm (1.0 inch) , allowing flexible routing while maintaining protection against crushing and abrasion.

Material and Armor Construction

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

Environmental and Mechanical Ratings

Temperature and Pressure Limits

The Bently Nevada 330902-00-38-05-02-00 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 service life. 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 and maintain reliable contact.

Installation Guidelines

Pre-Installation Preparation

Before mounting the Bently Nevada 330902-00-38-05-02-00 probe, inspect the mounting hole for debris or burrs that could affect thread engagement. Ensure the thread depth 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 armored cable bend radius stays above 25.4 mm to prevent kinking or damage to the internal conductors.

Cable Routing with Armor

Route the armored coaxial cable away from high-voltage lines and rotating machinery to minimize electromagnetic interference and physical wear. The stainless steel armor provides extra protection against cutting, crushing, and abrasion, making it ideal for installations with frequent maintenance access. Secure the cable with appropriate clamps, but avoid overtightening that could compress the armor or 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 and system upgrades.

Connector Attachment

Align the miniature coaxial ClickLoc connector with the mating receptacle and push until it clicks into place. Hand-tighten the coupling nut to finger-tight torque—do not use pliers or wrenches on this connection. After attachment, perform a continuity test to confirm proper electrical contact before energizing the system. The armored construction does not affect connector compatibility, ensuring easy integration with existing Bently Nevada monitoring systems.

Packaging List

• Bently Nevada 330902-00-38-05-02-00 probe assembly with armor (1 unit)

• Protective cap for the connector (1 unit)

• Installation instruction sheet (1 copy)

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

Shipping Information

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

Frequently Asked Questions (FAQ)

Q1: What is the total length of the Bently Nevada 330902-00-38-05-02-00 probe?
A1: The total probe length is 0.5 meter (20 inches) , as specified by the "05" option in the model number.

Q2: What does the armor protection cover?
A2: The stainless steel armor covers the probe cable, providing enhanced resistance against crushing, abrasion, and cutting in harsh industrial environments.

Q3: Can this probe be used in high-pressure systems?
A3: 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.

Q4: What is the recommended torque for the 1/4-28 threaded case?
A4: 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.

Q5: Does the armor affect the probe's flexibility?
A5: The armor adds mechanical protection while still allowing a minimum bend radius of 25.4 mm (1.0 inch) , maintaining adequate flexibility for most routing scenarios.