High-Temp 330851-02-000-080-50-01-00 Bently Nevada Vibration Probe

Product Overview

The Bently Nevada 330851-02-000-080-50-01-00 is a heavy-duty 3300 XL 25 mm Proximity Probe engineered for large-scale machinery protection. This high-performance sensor is specifically designed for applications requiring extended linear range and extreme environmental resilience. Featuring a specialized PEEK polymer tip and 304 stainless steel housing, it provides non-contact vibration and position monitoring for large steam turbines, generators, and industrial pumps. With an armored weight of 330g, it ensures high signal integrity even in high-vibration and corrosive maritime environments.

Core Technical Advantages

The 330851-02-000-080-50-01-00 offers unmatched thermal and mechanical stability for critical asset monitoring:

Extreme Thermal Resilience

This probe is built to survive the harshest operating conditions. It maintains a stable output at 200°C continuous operation and is rated for survival up to 250°C (482°F). The advanced tip design prevents thermal drift, ensuring positional accuracy within 0.05mm even during rapid temperature cycles.

Rugged Armored Protection

Equipped with Option 01 SST braided armor, the 5-meter triaxial PFA cable is shielded against mechanical damage and EMI. With a crush resistance of 1500N/m and an IP69K submersion rating, it is ideally suited for oil-submerged or high-pressure washdown zones.

Large-Scale Compatibility

Designed as a direct legacy replacement for the 7200 Series (25mm/35mm), this probe integrates seamlessly into existing Bently Nevada 3500 monitoring racks. The M30x2 thread engagement provides a secure mechanical fit for heavy industrial mounting brackets.

Technical Specifications

Engineering Installation & Maintenance

To maximize the precision of the 330851-02-000-080-50-01-00, follow these industrial standards:

Mechanical Mounting

Use the included 8.8-grade hardware to secure the M30x2 threads. Ensure the probe tip is perpendicular to the target shaft. Due to the 330g weight and armored cable, ensure the cable is supported every 1 meter to prevent connector strain.

Signal Verification

The DC resistance should measure 7.5Ω ± 0.8. If resistance deviates significantly, inspect the ClickLoc™ connectors for contamination or moisture. For maritime use, verify that the 200hr salt fog seals remain intact at the junction box.

Gap Calibration

Set the initial physical gap according to the Proximitor® Sensor's linear range. A 25mm probe typically requires a larger air gap than standard 8mm probes; consult the system datasheet for the specific voltage-to-gap calibration curve.

Technical FAQs

Q1: Can I use this 25mm probe with a standard 8mm Proximitor?
A1: No. The 330851-02-000-080-50-01-00 must be paired with a 3300 XL 25mm Proximitor Sensor to ensure the correct Scale Factor and signal linearity.

Q2: What is the benefit of the PEEK tip?
A2: PEEK offers a tensile strength of 100 MPa and superior chemical resistance compared to standard PPS tips, allowing the probe to withstand high-velocity oil flow and debris impact.

Q3: Is the armor flexible enough for tight turns?
A3: The SST braided armor provides high crush resistance but increases the minimum bend radius. Avoid sharp 90-degree bends to protect the internal 75Ω triaxial core.