3300 NSv Probe Bently Nevada 330901-00-12-05-01-05

Product Introduction

The Bently Nevada 330901-00-12-05-01-05 belongs to the 3300 NSv series, engineered for precise non-contact vibration and position monitoring in space-constrained machinery. This 1/4-28 UNF threaded probe comes without armor, offering a compact design with a 0.5 meter (20 inches) total length. Its 75 Ω coaxial FEP cable ensures stable signal transmission, while the miniature ClickLoc connector with a protector adds extra security against accidental disconnection. Additionally, this model carries multiple agency approvals (option 05), making it suitable for installations requiring regulatory certifications worldwide. The probe tip uses durable PPS material, and the AISI 304 stainless steel case provides excellent corrosion resistance. This version includes a 1.2-inch overall case length and zero unthreaded length, optimizing it for shallow mounting depths.

Technical Specifications

Electrical Characteristics

The Bently Nevada 330901-00-12-05-01-05 probe exhibits a DC resistance of 4.0 ± 0.5 ohms between the center and outer conductors at 0.5 meter length. This low resistance minimizes signal degradation, ensuring accurate displacement measurements over the cable run. The probe cable is a 75 Ω coaxial type with FEP insulation, which resists high temperatures and chemical exposure. Furthermore, the connector-to-connector torque should remain finger-tight, with a maximum of 0.565 N•m (5 in•lb) to protect the connector interface from over-torque damage.

Dimensional Overview

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 1.2 inches. Total probe length is 0.5 meter (20 inches) , ideal for short-reach installations. The minimum bend radius for the coaxial cable is 25.4 mm (1.0 inch) , permitting flexible routing in confined areas without performance compromise.

Material and Certification

The probe tip is made from Polyphenylene sulfide (PPS) , a high-performance polymer known for wear and chemical resistance. Its case uses AISI 304 stainless steel, offering robust structural integrity and oxidation protection. The cable insulation is fluoroethylene propylene (FEP), maintaining dielectric strength across the full temperature spectrum. Significantly, this probe holds multiple agency approvals (option 05), including certifications for hazardous area installations, simplifying global deployment. Additionally, a Viton O-ring seals the probe tip to the case, preventing process fluid ingress.

Environmental and Mechanical Ratings

Temperature and Pressure Limits

The Bently Nevada 330901-00-12-05-01-05 operates and stores between -52°C and +177°C (-62°F to +351°F) . However, sustained exposure below -34°C (-30°F) may reduce the pressure seal's service life. This probe is engineered to seal differential pressure between tip and case, though it is not pressure-tested prior to shipment. For applications demanding verified pressure seals, please contact our custom design department 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) . Following these torque values prevents thread stripping or case deformation. When connecting the ClickLoc connector with protector, apply only finger-tight force—never exceed 0.565 N•m (5 in•lb) to safeguard the connector pins and protector mechanism.

Installation Guidelines

Pre-Installation Checks

Before mounting the Bently Nevada 330901-00-12-05-01-05 probe, inspect the threaded hole for debris or burrs. Ensure the thread engagement stays within 0.375 inches to avoid bottoming out. Apply a suitable thread sealant compatible with the operating temperature to maintain the pressure barrier. Additionally, verify that the cable bend radius remains above 25.4 mm to prevent signal attenuation or insulation damage.

Cable Routing Practices

Route the coaxial FEP cable away from high-voltage sources and moving parts to minimize electromagnetic interference and mechanical stress. Secure the cable with appropriate clips, but avoid overtightening that could compress the insulation. For optimal performance, maintain gentle curves when changing direction, respecting the minimum bend radius. Moreover, label both cable ends clearly to simplify future maintenance and troubleshooting.

Connector Attachment with Protector

Align the miniature coaxial ClickLoc connector with the mating receptacle and push until it clicks into place. The built-in connector protector adds an extra layer of security against accidental pull-out. Hand-tighten the coupling nut to finger-tight torque—do not use tools on this connection. After attachment, perform a continuity check to confirm proper electrical contact before system startup.

Packaging List

• Bently Nevada 330901-00-12-05-01-05 probe assembly (1 unit)

• Protective cap for the connector (1 unit)

• Installation instruction sheet (1 copy)

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

Shipping Information

All orders are dispatched via FedEx, UPS, or DHL with tracking numbers provided upon shipment. Standard delivery typically takes 3 to 7 business days, depending on the destination. Express shipping options are available for urgent requirements.

Frequently Asked Questions (FAQ)

Q1: What is the total length of the Bently Nevada 330901-00-12-05-01-05 probe?
A1: The total probe length is 0.5 meter (20 inches) , as indicated by the "05" option in the model number.

Q2: What agency approvals does this probe carry?
A2: The "05" agency approval option includes multiple certifications such as CSA, ATEX, and IECEx for hazardous area use. Please refer to the specific approval documentation for detailed ratings.

Q3: Can this probe be used in high-pressure systems?
A3: The probe is designed to seal differential pressure, but it is not factory pressure-tested. 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: How does the connector protector benefit installation?
A5: The connector protector prevents accidental disconnection due to vibration or cable pull, ensuring reliable signal continuity in harsh operating conditions.