Bently Nevada 330901-00-90-10-02-00 NSv Probe

3300 NSv Proximity Probe 330901-00-90-10-02-00

Product Introduction

The Bently Nevada 330901-00-90-10-02-00 belongs to the 3300 NSv series, a compact solution for proximity measurement. This 1.0-meter probe is an excellent choice for small turbines, fans, and pumps. Its lightweight design reduces mechanical loading on mounting brackets. Furthermore, the 1/4-28 UNF thread provides easy installation into standard mounting holes. The probe uses a miniature coaxial ClickLoc connector for reliable signal transmission. This connector resists vibration-induced loosening, ensuring continuous data acquisition. Additionally, the probe lacks armor, which reduces its overall weight and bending stiffness. This feature simplifies routing in tight spaces. The 330901-00-90-10-02-00 also offers a wide temperature range from -52°C to +177°C. Such versatility makes it suitable for both indoor and outdoor installations.

Technical Specifications

The 330901-00-90-10-02-00 probe delivers accurate and repeatable measurements. Its tip material is polyphenylene sulfide (PPS), which offers excellent chemical resistance. The probe case uses AISI 304 stainless steel (SST) for corrosion protection. The cable is a 75 Ω coaxial type with fluoroethylene propylene (FEP) insulation. This insulation maintains signal fidelity even in humid or oily environments. The total cable length for this option is exactly 1.0 meter. Moreover, the DC resistance from the center conductor to the outer conductor measures 4.2 ± 0.5 ohms. This resistance value ensures proper matching with the NSv Proximitor Sensor.

The probe case thread is 1/4-28 UNF, and the maximum thread engagement is 0.375 inches. The overall case length option is 9.0 inches, while the unthreaded length option is 0 inches. Therefore, the full case length is available for thread engagement or mounting. The maximum rated torque for this case size is 7.3 N•m. However, the recommended torque is only 5.1 N•m to prevent over-stressing the threads. This lower torque value protects the delicate internal coil assembly. Furthermore, the connector-to-connector torque requires only finger tightening. Over-tightening the connector can damage the coaxial interface.

Mechanical and Environmental Parameters

This Bently Nevada 3300 NSv probe operates across a broad temperature spectrum. Both operating and storage temperatures range from -52°C to +177°C. Prolonged exposure below -34°C may compromise the pressure seal integrity. 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-sensitive applications, you must contact their custom design department for testing services.

The probe weight ranges from approximately 14 to 150 grams, depending on cable length. This lightweight characteristic reduces stress on mounting points. The absence of stainless steel armor further decreases the probe's mass. Consequently, this probe is ideal for high-speed rotating machinery where balance is critical. The minimum bend radius for the unarmored cable is also 25.4 mm, matching the armored version. This flexibility allows easy routing through conduit or cable trays. Additionally, the probe's small diameter makes it suitable for installations with limited clearance.

Installation and Mounting Guide

Proper installation of the 330901-00-90-10-02-00 ensures optimal performance and longevity. First, inspect the 1/4-28 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. Afterward, use a torque wrench to tighten it to 5.1 N•m. Exceeding this value can deform the probe case and affect calibration.

Route the coaxial cable carefully to maintain a bend radius greater than 25.4 mm. Sharp bends can degrade the signal quality 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. Remember, this 1.0-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 make sure the sealant does not touch the sensing tip.

Packaging List

• 1 x Bently Nevada 330901-00-90-10-02-00 Proximity Probe (with integrated 1.0m coaxial cable)

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

• 1 x Quick-start installation guide (paper copy)

• 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 keep the original packaging for safe storage or reshipment.

Frequently Asked Questions (FAQ)

1. Can I use the 330901-00-90-10-02-00 with a 5-meter Proximitor?
No. This 1.0-meter probe is calibrated for use with the NSv Proximitor Sensor designed for the same cable length. Using a different length sensor will produce inaccurate measurements.

2. Why does this probe lack armor?
The unarmored design reduces weight and improves flexibility. This makes it more suitable for applications with tight routing constraints or where mass reduction is important.

3. 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 4.2 ± 0.5 ohms. Also, visually inspect the tip for cracks or wear.

4. 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.

5. 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.

6. What if I over-torque the probe during installation?
Over-torquing can strip the 1/4-28 threads or damage the internal sensing coil. Always follow the recommended torque value of 5.1 N•m to avoid such issues.

7. Can this probe withstand high vibration levels?
Yes. The 3300 NSv series is engineered for reliable operation in moderate vibration environments. The ClickLoc connector maintains a secure connection under typical machinery vibration.

8. 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.