330902-00-30-05-02-00 | Bently Nevada Armored Proximity Probe

Product Introduction

The Bently Nevada 330902-00-30-05-02-00 functions as a rugged sensing element within the 3300 NSv proximity monitoring system. This armored probe measures vibration and position by detecting the distance between the probe tip and a conductive target. Manufactured in the U.S.A., this probe delivers accurate, non-contact measurements for critical rotating machinery. Therefore, it plays an essential role in protecting turbines, compressors, pumps, and other industrial assets, especially in applications where mechanical protection is necessary.

Technical Specifications

The model number clearly defines the key characteristics of this probe. The 330902-00-30-05-02-00 features a 1/4-28 UNF thread with armor. The unthreaded length option "00" means 0 inches, while the overall case length option "30" indicates 3.0 inches. The total length option "05" specifies a 0.5 meter (20 inches) cable. The connector and cable-type option "02" provides a miniature coaxial ClickLoc connector with standard cable. The "00" suffix indicates that agency approval is not required.

The probe tip utilizes Polyphenylene sulfide (PPS) , a durable material that resists wear and chemical attack. The probe case features AISI 304 stainless steel (SST) for excellent corrosion resistance and mechanical strength. The cable consists of 75 Ω coaxial, fluoroethylene propylene (FEP) insulated construction, ensuring reliable signal transmission. The DC resistance for the 0.5-meter probe measures 4.0 ± 0.5 ohms from the center conductor to the outer conductor.

Armor Protection

The armor on the 330902-00-30-05-02-00 provides additional mechanical protection for the probe cable. This feature proves especially valuable in installations where the cable may experience abrasion, crushing, or other physical stress. The armor consists of flexible AISI 302 stainless steel, offering excellent durability while maintaining reasonable flexibility for installation. This armored construction makes the probe suitable for harsh industrial environments where unarmored cables might suffer damage.

Mechanical Installation Guidelines

Proper installation requires attention to torque specifications and thread engagement. For 1/4-28 or M8X1 probe cases, the maximum rated torque is 7.3 N•m (65 in•lb) , while we recommend 5.1 N•m (45 in•lb) for optimal installation. The maximum length of thread engagement for 1/4-28 threads is 0.375 inches. Following these torque recommendations prevents damage to the probe and ensures reliable measurements.

This probe uses a Viton O-ring as the sealing material. The sealing design prevents differential pressure between the probe tip and case. However, please note that Bently Nevada does not pressure test probes prior to shipment. You should perform appropriate pressure testing during installation if your application requires it.

Environmental Durability

The 330902-00-30-05-02-00 offers a wide operating and storage temperature range of -52°C to +177°C (-62°F to +351°F) . However, a critical note exists for low-temperature operation. Exposing the probe to temperatures below -34°C (-30°F) for a sustained period may cause premature failure of the pressure seal. Therefore, you should avoid prolonged exposure to extreme cold conditions.

The probe weight is approximately 0.5 kg, which includes the armored cable construction. This weight reflects the additional protection provided by the armor compared to unarmored versions.

Compatibility and System Integration

The 330902-00-30-05-02-00 integrates seamlessly with the 3300 NSv Proximitor Sensor and extension cables. When configuring your system, you must ensure that the probe length and extension cable length, when added together, equal the Proximitor Sensor total length. This matching requirement guarantees accurate calibration and reliable measurements.

The miniature coaxial ClickLoc connector features gold-plated brass construction, providing secure connections that resist loosening from vibration. The connector locks into place with a positive click, ensuring a reliable electrical connection throughout the probe's service life.

Packaging List

Each unit of the 330902-00-30-05-02-00 arrives in protective packaging to ensure safe delivery. The package includes the following items:

• 1 x Bently Nevada 330902-00-30-05-02-00 3300 NSv Armored Proximity Probe (0.5 meter cable)

• 1 x Locknut with pre-drilled safety wire holes

Please note that this product package does not include extension cables, Proximitor Sensors, mounting hardware, or any documentation such as certificates or warranty cards. You must order these items separately if required.

Shipping Information

We ship all orders for the 330902-00-30-05-02-00 using premium express services to ensure timely and secure delivery. We partner with leading global carriers, including FedEx, UPS, and DHL. The specific carrier for your order will depend on your location and the shipping method you select at checkout. All shipments carry full traceability, and we will provide tracking information to you promptly.

Frequently Asked Questions (FAQ)

1. What does the "330902" prefix in the model number indicate?
The "330902" prefix indicates that this is a 3300 NSv probe with armor. The armored construction provides additional mechanical protection for the cable, making it suitable for harsh industrial environments where unarmored probes might suffer damage.

2. What is the recommended torque for installing this probe?
For 1/4-28 or M8X1 probe cases, we recommend applying 5.1 N•m (45 in•lb) of torque. The maximum rated torque is 7.3 N•m (65 in•lb) . Exceeding the maximum torque may damage the probe case or affect its performance.

3. What is the length of this probe's cable?
The 330902-00-30-05-02-00 features a 0.5 meter (20 inches) cable. The "05" in the model number specifies this total length option. Other length options include 1.0, 5.0, and 7.0 meters.

4. What temperature precautions should I take with this probe?
While the probe operates from -52°C to +177°C (-62°F to +351°F) , you should avoid exposing it to temperatures below -34°C (-30°F) for extended periods. Sustained cold exposure may cause premature failure of the pressure seal.

5. How do I ensure proper system length matching with this probe?
You must ensure that the probe length and the extension cable length, when added together, equal the Proximitor Sensor total length. For this probe, the total length is 0.5 meter. Always check your Proximitor Sensor specifications for the supported total length before ordering extension cables.