Bently Nevada 50mm Proximity Probe 330876-01-10-00-00

Bently Nevada 330876-01-10-00-00 3300 XL 50mm Probe

Product Introduction

The Bently Nevada 330876-01-10-00-00 belongs to the renowned 3300 XL series of proximity probes. Specifically, this 50 mm probe handles the most demanding steam turbine DE environments with ease. Furthermore, it provides continuous, accurate measurements even when temperatures soar. This particular configuration offers a 1.0-meter total length, making it ideal for installations with short cable runs. Therefore, users seeking a compact, high-temperature probe will find this model exceptionally suitable.

Technical Specifications

This section outlines the key technical parameters for the 330876-01-10-00-00.

Electrical Characteristics

The probe exhibits a DC resistance of 6.4 ± 0.5 Ω measured from the center conductor to the coaxial conductor. This resistance value corresponds specifically to the 1.0-meter cable length. Additionally, this low resistance ensures minimal signal loss and accurate data transmission to the monitoring system.

Temperature Ratings

The 3300 XL 50 mm probe operates continuously across a wide range from -35°C to +200°C (-31°F to +392°F). Moreover, it tolerates short-term exposure up to +250°C (+482°F) for periods under 24 hours. Consequently, this probe suits applications where temperature spikes occur during startup or load changes.

Cable and Connector Design

First, this model uses a 75 Ω triaxial cable with PFA insulation for superior dielectric strength. Next, the High Temperature FluidLoc cable comes standard, providing excellent moisture resistance. Furthermore, special high-temperature ClickLoc connectors appear on both the probe and extension cable. For instance, the ClickLoc design includes a removable collar. This collar simplifies threading the cable through narrow conduits and tight machinery spaces. Meanwhile, each unit ships with connector protectors and a disposable installation tool. These accessories prevent dirt and moisture from contaminating the critical connector interfaces.

Case and Thread Details

The probe case utilizes AISI 304 stainless steel for excellent corrosion resistance. Additionally, the design features a straight exit with ½-20 English threads. The maximum thread engagement length measures 0.750 inches. The included locknut comes with predrilled safety wire holes, enabling secure locking in high-vibration applications. The overall case diameter is 1.99 inches for both straight and side exit versions.

Tip Material

Specifically, the probe tip consists of Polyphenylene Sulfide (PPS). This engineering plastic offers outstanding thermal stability and chemical resistance, ensuring reliable performance in aggressive environments.

Mechanical and Environmental Parameters

Understanding these parameters helps ensure correct application and long service life.

• Operating Temperature Range: -35°C to +200°C

• Short-term Temperature Limit: +250°C for less than 24 hours

• Probe Case Material: AISI 304 stainless steel

• Probe Tip Material: PPS

• Overall Case Diameter: 1.99 inches

• Thread Specification: ½-20

• Maximum Thread Engagement: 0.750 inches

• Cable Impedance: 75 Ω triaxial

• Cable Insulation: PFA

• Total Probe Length: 1.0 meter (3.3 feet)

Unique Features of the 3300 XL 50mm Probe

Dual-Seal Protection

The 330876-01-10-00-00 incorporates both front and rear seals. These seals work together with the FluidLoc cable to block moisture ingress effectively. This triple-layer protection proves critical in steam turbine environments where condensation poses a constant threat.

High-Temperature ClickLoc Connectors

Special high-temperature ClickLoc connectors represent another key advantage. These connectors maintain reliable electrical contact even at elevated temperatures. Moreover, the removable collar on the probe lead connector facilitates installation in spaces with restricted access.

Standardized Case Design

The 1.99-inch case diameter provides consistency across all case styles. Whether choosing straight exit or side exit, users benefit from the same compact footprint. This standardization simplifies mounting bracket design and inventory management.

Installation Guidelines

Follow these steps to install the 330876-01-10-00-00 correctly and safely.

Pre-Installation Preparation

First, unpack the probe and inspect all components. Verify that the connector protectors remain in place. The package includes a disposable installation tool specifically designed for the ClickLoc connectors. Use this tool to clean and protect the connectors during installation.

Mounting the Probe

Next, thread the probe into the prepared mounting hole. Use the ½-20 locknut with safety wire holes to secure the probe firmly. However, avoid exceeding the 0.750-inch maximum thread engagement. Overtightening could distort the probe case or affect the internal sensing elements.

Routing the Cable

Furthermore, take advantage of the removable collar on the ClickLoc connector. This collar enables you to pass the cable through small openings before securing the connector. Specifically, route the cable away from moving parts and high-heat sources.

Making Final Connections

Finally, mate the probe connector with the extension cable connector. Listen for the distinctive "click" that confirms proper engagement. Then, secure the connection using the provided protectors if required. Perform a continuity check to verify the connection integrity.

System Verification

After installation, verify the probe gap voltage. The reading should fall within the expected range for the target application. Additionally, monitor the signal during initial equipment startup to confirm stable operation.

Application Scenarios

Steam Turbine DE Monitoring

The 3300 XL 50 mm probe excels in steam turbine direct exhaust environments. Its high-temperature tolerance and moisture resistance make it the preferred choice for bearing housing and shaft vibration monitoring.

Gas Turbine Applications

Additionally, this probe works effectively in gas turbine installations. The compact 1.99-inch case diameter allows installation in space-constrained areas.

Industrial Compressors

Furthermore, the 330876-01-10-00-00 provides reliable protection for large industrial compressors. Early detection of vibration changes helps prevent costly unplanned downtime.

Packaging List

Each new unit includes the following components:

• 330876-01-10-00-00 3300 XL 50 mm Proximity Probe with 1.0-meter cable

• Locknut with predrilled safety wire holes

• Connector protectors (fitted on probe and cable connectors)

• Disposable connector protector installation tool

• Quick-reference installation guide

Shipment method: Fedex, UPS, DHL

Frequently Asked Questions

1. What resistance value should I expect for the 1.0-meter version?
The DC resistance from center to coaxial conductor measures 6.4 ± 0.5 Ω for the 330876-01-10-00-00. This value differs from the 5.0-meter and 9.0-meter versions.

2. Can this probe withstand steam exposure?
Yes. The front and rear seals, combined with the High Temperature FluidLoc cable, effectively prevent moisture from entering the probe tip. This design specifically addresses steam turbine DE environments.

3. Is the ClickLoc connector compatible with standard extension cables?
Yes, the ClickLoc connectors on the 3300 XL 50 mm probe mate with matching ClickLoc connectors on Bently Nevada extension cables. Always verify compatibility before installation.

4. What is the maximum thread engagement for this probe?
The maximum thread engagement is 0.750 inches. Exceeding this limit may damage the probe or affect measurement accuracy.

5. How do I clean the connector before installation?
Use the disposable connector protector installation tool provided in the package. This tool helps keep the connectors free from contamination during the installation process.

6. What shipping carriers do you use for this product?
We ship all orders via Fedex, UPS, or DHL with full tracking information. International shipping options are available worldwide.