Bently Nevada 330876-03-50-01-00 3300 XL 50mm Probe

Product Introduction

The Bently Nevada 330876-03-50-01-00 belongs to the trusted 3300 XL series. This 50 mm proximity probe excels in severe steam turbine environments, particularly in DE (direct extraction) applications. Its robust construction ensures accurate measurements even when temperatures reach 200°C (392°F) continuously. Meanwhile, the probe withstands intermittent exposure up to 250°C (482°F) for less than 24 hours.

Engineers choose this model for its superior moisture resistance. Front and rear seals work together with the high-temperature FluidLoc cable to block humidity from entering the probe tip. Additionally, the special ClickLoc connectors resist heat damage and maintain signal integrity. Each unit includes connector protectors and a disposable installation tool to keep contacts clean during setup. For tight spaces, the removable collar on the ClickLoc connector simplifies cable routing through narrow clearances.

Technical Specifications

The 330876-03-50-01-00 probe uses a 75 Ω triaxial cable with PFA insulation. This FluidLoc cable is armored for extra protection in harsh industrial settings. The total length measures 5.0 meters (16.4 feet), specifically designed for use with the five-meter Proximitor Sensor only.

Key electrical parameters:

• DC resistance from center to coaxial conductor: 7.6 ± 0.8 Ω

• Cable impedance: 75 Ω triaxial

• Tip material: Polyphenylene Sulfide (PPS)

• Case material: AISI 304 stainless steel (SST)

The side exit case style features a smooth 1.99-inch diameter. Two ¼-20 mounting holes are located at the rear of the probe case for secure attachment. The probe offers no agency approvals, making it suitable for applications where certifications are not required.

Mechanical and Environmental Ratings

This probe operates reliably across a wide temperature spectrum. Its standard operating range spans from -35°C to +200°C (-31°F to +392°F). Furthermore, it tolerates short-term excursions up to +250°C (+482°F) for periods under 24 hours.

The armored cable construction adds mechanical strength. High-temperature FluidLoc technology prevents fluid ingress, a common failure point in steam turbine environments. The stainless steel case resists corrosion and physical damage. Therefore, this probe maintains long-term stability in demanding power generation and heavy industrial settings.

Installation Guidelines

Installing the Bently Nevada 3300 XL 50 mm probe requires attention to clearance and connector care. First, use the supplied disposable installation tool to fit the connector protector. This step prevents contamination during assembly. Next, route the cable through the available space. The removable collar on the ClickLoc connector allows the cable to pass through tight openings, after which you can reattach the collar securely.

For side exit models like this one, mount the probe using the two ¼-20 rear holes. Ensure the probe tip faces the target surface at the correct gap as specified by your proximity system. The smooth 1.99-inch case diameter fits standard mounting fixtures. Always handle the probe tip carefully to avoid damaging the PPS material.

Packaging List

Each new original 330876-03-50-01-00 unit arrives in factory-sealed packaging. The box contains:

• 1 x 3300 XL 50 mm Proximity Probe (side exit, 5m armored cable)

• 1 x Connector protector (pre-installed)

• 1 x Disposable connector protector installation tool

• 1 x Removable collar for ClickLoc connector

Note: Certificates and warranty documents are not included in the package.

Shipping Information

All orders ship via FedEx, UPS, or DHL with tracking numbers provided. International deliveries typically take 3–7 business days. Expedited options are available upon request.

Frequently Asked Questions

1. Can I use this 5-meter probe with an extension cable?
No. The 330876-03-50-01-00 is specifically designed for use with the five-meter Proximitor Sensor only. Extension cables are not recommended for this length.

2. What is the maximum continuous temperature for this probe?
The probe operates continuously at 200°C (392°F). It can handle short-term spikes to 250°C (482°F) for less than 24 hours without losing accuracy.

3. Does the side exit design affect installation in tight spaces?
Actually, it helps. The side exit case and removable ClickLoc collar allow easier routing through confined areas compared to straight exit models.

4. How do I keep the connector clean during installation?
Use the included disposable installation tool and connector protector. These accessories prevent dirt and moisture from reaching the contacts while you mount the probe.

5. Is this probe compatible with other Bently Nevada monitors?
Yes, the 3300 XL series probe works with Bently Nevada Proximitor sensors and monitoring systems that support 50 mm probes with 5.0-meter cables. Always verify system compatibility before installation.