330103-20-25-05-02-CN 3300 XL 8 mm Proximity Probe | Bently Nevada

Product Overview

The 330103-20-25-05-02-CN operates as a high-precision transducer within the Bently Nevada 3300 XL 8 mm Proximity Transducer System. This eddy current probe measures both static displacement and dynamic vibration by sensing the gap between the probe tip and the target shaft. It provides critical data for machine protection systems in high-speed rotating equipment such as gas turbines, steam turbines, and centrifugal compressors. We supply this unit as 100% Brand New original hardware, Made in the U.S.A., specifically configured for deep-reach installations requiring regional regulatory compliance.

Part Number Breakdown

Bently Nevada utilizes a modular part numbering system to define the mechanical profile of the 330103 series:

Technical Specifications

The 330103-20-25-05-02-CN delivers consistent performance in extreme industrial environments:

• Probe Tip Diameter: 8 mm

• Probe Tip Material: Polyphenylene sulfide (PPS)

• Probe Case Material: AISI 303 or 304 stainless steel (SST)

• Linear Range: 2.0 mm (80 mils)

• Nominal Scale Factor: 7.87 V/mm (200 mV/mil)

• Cable Type: 75 $\Omega$ triaxial, FEP insulated

• Connector Type: Gold-plated ClickLoc™ miniature coaxial connector

• Shipping Weight: 1.5 kg

Engineering Advantages

• Extended Reach for Deep-Port Access: The 250 mm case length combined with a 200 mm unthreaded section solves the challenge of installing sensors through thick machine casings or deep bearing housings. It allows for precise gapping in recessed locations where standard probes cannot reach.

• ClickLoc™ Interconnect Security: The gold-plated ClickLoc™ connector system prevents the cable from backing out due to machine vibration. The locking mechanism ensures a gas-tight, low-resistance connection, eliminating the signal noise often associated with standard coaxial interfaces.

• Extreme Chemical Resilience: The Polyphenylene sulfide (PPS) tip and FEP insulated cable resist degradation from hot turbine oils and industrial lubricants. This ensures the probe maintains insulation integrity over decades of continuous immersion in harsh fluids.

• Regional Regulatory Compliance: The "CN" approval suffix ensures the hardware meets specific regional safety and hazardous area standards. This facilitates seamless project commissioning in regulated markets and provides documented proof of compliance for safety-critical systems.

• Non-Contact Eddy Current Technology: By utilizing high-frequency electromagnetic fields, the probe detects shaft movement without physical contact. This removes the risk of mechanical wear and allows for continuous monitoring of machinery rotating at ultra-high speeds.

FAQs

Q: Do I need a specific extension cable for the 0.5-meter probe?

A: Yes. The 0.5-meter total length requires a matching 3300 XL Extension Cable to reach the Proximitor® Sensor. For a standard 5.0-meter system, use a 4.5-meter extension cable; for a 9.0-meter system, use an 8.5-meter extension cable.

Q: Can I install this probe in high-pressure environments?

A: Bently Nevada 3300 XL 8 mm probes seal differential pressure between the tip and the case using a Viton® O-ring. However, if your application requires certified pressure testing, please contact our custom design department prior to purchase.

Q: What is the benefit of the 200 mm unthreaded length?

A: The unthreaded portion allows the probe to slide freely through mounting bushings or brackets. This prevents threads from catching on the internal edges of the machine casing, ensuring smooth gapping against the target shaft.

Q: How do I verify the ClickLoc™ connection is secure?

A: The ClickLoc™ connector provides tactile and audible feedback when fully seated. The gold-plated surfaces must remain clean and dry to ensure the low-resistance electrical path required for 200 mV/mil sensitivity.