Bently Nevada Proximity Probe 330909-00-40-05-11-00

3300 NSv Proximity Probe 330909-00-40-05-11-00

Product Introduction

The Bently Nevada 330909-00-40-05-11-00 belongs to the 3300 NSv series, offering a rugged proximity measurement solution with advanced cable protection. This 0.5-meter probe includes stainless steel armor and a FluidLoc cable for enhanced durability. The FluidLoc feature provides superior resistance to fluid ingress, making it ideal for wet or oily environments. Furthermore, the 3/8-24 UNF thread ensures strong and secure mounting. The probe uses a miniature coaxial ClickLoc connector with a connector protector for additional reliability. This protector shields the connection point from contamination and mechanical damage. Additionally, the short 0.5-meter cable length reduces signal attenuation and simplifies installation. The 330909-00-40-05-11-00 operates across a wide temperature range from -52°C to +177°C. Its robust construction suits demanding industrial applications.

Technical Specifications

The 330909-00-40-05-11-00 probe delivers accurate and repeatable measurements for critical rotating machinery. Its tip material is polyphenylene sulfide (PPS), which offers outstanding resistance to chemicals and wear. The probe case uses AISI 304 stainless steel (SST) for superior corrosion protection. The cable is a 75 Ω coaxial type, insulated with fluoroethylene propylene (FEP). This insulation maintains signal fidelity even in electrically noisy environments. The total cable length for this option is 0.5 meter. Moreover, the DC resistance from the center conductor to the outer conductor measures 4.0 ± 0.5 ohms. This specific resistance value ensures proper matching with the NSv Proximitor Sensor.

The probe case thread is 3/8-24 UNF, and the maximum thread engagement measures 0.563 inches. The overall case length option is 4.0 inches, while the unthreaded length option is 0 inches. Therefore, the entire case length remains available for thread engagement or mounting. The maximum rated torque for this case size is 33.9 N•m. However, the recommended installation torque is 11.3 N•m to avoid over-stressing the threads or internal components. For the first three threads, a lower torque of 7.5 N•m is recommended to prevent thread damage during initial engagement. Furthermore, the connector-to-connector torque requires only finger tightening. Over-tightening the connector can compromise the coaxial interface and degrade signal quality.

Mechanical and Environmental Parameters

This Bently Nevada 3300 NSv probe withstands demanding environmental conditions. Both operating and storage temperatures range from -52°C to +177°C. Prolonged exposure below -34°C may weaken the pressure seal over time. The probe seals differential pressure between the tip and case using a Viton O-ring. Although designed for pressure sealing, Bently Nevada does not pressure-test these probes before shipment. For pressure-critical applications, you must contact their custom design department for testing services.

The stainless steel armor provides exceptional cable protection against abrasion, crushing, and cutting. The FluidLoc cable adds another layer of defense by resisting fluid penetration along the cable jacket. This combination makes the probe suitable for harsh environments with oil, water, or chemical exposure. The probe's overall weight ranges from approximately 14 to 150 grams, depending on cable length. The armored version weighs slightly more yet remains manageable. The minimum bend radius for the armored cable is 25.4 mm, allowing flexible routing. The larger 3/8-24 thread offers superior holding power and resistance to loosening from vibration. The connector protector further enhances reliability by shielding the connection point.

Installation and Mounting Guide

Proper installation of the 330909-00-40-05-11-00 ensures reliable performance and extended service life. First, inspect the 3/8-24 UNF threads for any burrs or contamination. Next, apply a thin layer of anti-seize lubricant to the threads, but avoid the probe tip. Then, thread the probe into the mounting hole by hand until snug. For the first three threads, use a torque of 7.5 N•m to avoid initial damage. Afterward, use a torque wrench to tighten it to the final recommended value of 11.3 N•m. Exceeding this value can deform the probe case and affect calibration accuracy.

Route the armored cable carefully to maintain a bend radius greater than 25.4 mm. Sharp bends can degrade the signal quality or damage the armor over time. Secure the cable with appropriate clips or ties at regular intervals. This practice reduces mechanical strain on the ClickLoc connector. Mate the connector with the extension cable until you hear a distinct click. Then, tighten it finger-tight only. The connector protector should be installed over the connection point to shield it from contaminants. Remember, this 0.5-meter probe is intended for use with the corresponding NSv Proximitor Sensor. Using a mismatched sensor may result in erroneous readings. Finally, apply thread sealant to the mounting hole if your application involves pressurized environments. Just ensure the sealant does not contact the sensing tip.

Packaging List

• 1 x Bently Nevada 330909-00-40-05-11-00 Proximity Probe (with integrated 0.5m armored FluidLoc coaxial cable)

• 1 x Miniature coaxial ClickLoc connector with connector protector (factory-installed)

• 1 x Quick-start installation guide (printed)

• 1 x Plastic shipping cap for tip protection

The probe arrives in a static-shielded bag to prevent electrostatic discharge. The outer carton meets FedEx, UPS, and DHL shipping standards. Please retain the original packaging for safe storage or reshipment.

Frequently Asked Questions (FAQ)

1. Can I use the 330909-00-40-05-11-00 with a 1-meter Proximitor?
No. This 0.5-meter probe is calibrated specifically for use with the NSv Proximitor Sensor designed for the same cable length. Using a different length sensor will produce inaccurate measurements.

2. What is the FluidLoc cable feature?
FluidLoc cable provides enhanced resistance to fluid ingress along the cable jacket. This feature protects the internal conductors from oil, water, and chemical contamination.

3. What does the connector protector do?
The connector protector shields the ClickLoc connection point from physical damage and contamination. This improves long-term reliability in harsh environments.

4. How do I verify the probe's health?
Measure the DC resistance between the center and outer conductors. For this model, the reading should be 4.0 ± 0.5 ohms. Also, visually inspect the tip and armor for any physical damage.

5. Is this probe pressure-rated?
The probe uses a Viton O-ring to seal differential pressure. However, Bently Nevada does not perform pressure testing before shipment. Contact their custom design department if you need certified pressure testing.

6. What shipping carriers do you recommend?
We strongly recommend using FedEx, UPS, or DHL for transit. These couriers provide tracking and insurance, ensuring your probe arrives safely.

7. What if I over-torque the probe during installation?
Over-torquing can strip the 3/8-24 threads or damage the internal sensing coil. Always follow the recommended torque value of 11.3 N•m, with 7.5 N•m for the first three threads.

8. Can this probe withstand high vibration levels?
Yes. The 3300 NSv series is engineered for reliable operation in moderate to high vibration environments. The larger thread, ClickLoc connector, and armor ensure a secure and durable installation.

9. How should I store this probe?
Store it in its original anti-static bag, inside a clean and dry cabinet. Keep the temperature between -52°C and +177°C. Avoid contact with corrosive chemicals that may attack the PPS tip or FEP insulation.