Product Overview

The Bently Nevada 31000-28-10-00-026-00-02 is a heavy-duty Proximity Probe Housing designed to provide superior mechanical and environmental protection for proximity transducer systems. Engineered specifically for use with Bently Nevada 3300 and 3300 XL 8mm probes, this housing assembly allows for probe replacement or adjustment without requiring the disassembly of the machine's internal components. It plays a vital role in Turbine Supervisory Instrumentation (TSI) by shielding the sensitive sensor from high-pressure lubricants, moisture, and mechanical impact. This model ensures long-term signal stability for critical rotating assets such as steam turbines, centrifugal compressors, and large pumps, maintaining the integrity of your machinery protection system in the most demanding industrial environments.

Component Configuration & Suffix Mapping

The 31000 series utilizes a comprehensive coding system to match specific machine casing requirements and safety standards. This assembly breaks down as follows:

28 - Probe Threaded Length

Specifies a 2.8-inch threaded length for the probe sleeve. This allows for precise depth adjustment during commissioning to achieve the optimal gap voltage against the shaft target.

10 - Exploded Case Length

Defines a 1.0-inch increment for the overall housing extension. This parameter ensures the housing clears external insulation or lagging on large industrial turbines.

00 - Fittings Option

Indicates a standard fitting configuration without specialized conduit adapters, providing a streamlined profile for standard installation layouts.

026 - Total Hub Reach

Represents a total reach of 2.6 inches. This critical measurement determines how far the probe extends from the housing base into the machine's bearing housing or seal area.

00 - Conduit Fitting Option

Specifies no specific conduit fitting included at the housing exit, allowing the field engineer to select the appropriate localized wiring protection.

02 - Agency Approval

Equipped with Multiple Approvals (ATEX, IECEx, CSA). This ensures the housing meets the stringent "Explosion Proof" and "Flame Proof" requirements for hazardous area installations worldwide.

Physical & Operational Data

Field Deployment Guidelines

Precision gapping is the hallmark of a successful 31000 housing installation. Use the external adjustment sleeve to move the probe toward the shaft until the 3500 monitoring rack indicates the desired -10.0 Vdc bias. Always apply a high-quality thread sealant to the housing-to-machine interface to prevent oil leakage. Maintain a strict bend radius for the internal coaxial cable; exceeding 25.4 mm (1 inch) can lead to signal attenuation or conductor fatigue. For hazardous areas, ensure all conduit entries utilize certified flameproof seals to maintain the integrity of the -02 agency approval rating.

Strategic Industrial Benefits

The 31000-28-10-00-026-00-02 assembly eliminates the need to shut down critical machinery for probe maintenance. By utilizing the "External Access" design, technicians can troubleshoot or replace sensors while the turbine is at speed, significantly reducing O&M costs. The housing's robust construction acts as a thermal barrier, protecting the probe's integral cable from localized hot spots. This hardware integrates seamlessly with Honeywell Experion and Siemens PCS7 platforms via the Bently Nevada 3500 system, ensuring your DCS receives high-fidelity vibration data for advanced trend analysis and predictive maintenance.

Global Logistics & Fulfillment

We understand that equipment protection is time-sensitive.

Fulfillment Window: 2-7 days when payment finish through our prioritized supply chain.

Global Dispatch: Express shipping via DHL, FEDEX, or UPS with full end-to-end tracking.

Industrial Protection: Each housing is shipped in heavy-duty, anti-static industrial packaging. We utilize reinforced cartons and moisture-wicking agents to ensure the precision-machined threads and seals remain in factory-sealed condition during international transit.

Technical Knowledge Base

Q1: Can I use this housing for an 11mm probe?

A1: The 31000 series is primarily designed for 8mm proximity probes. For 11mm or 25mm probes, a different housing series or a specific internal sleeve modification is required due to the larger tip diameter.

Q2: What is the benefit of the -02 "Multiple Approvals" option?

A2: The -02 suffix provides a universal certification (ATEX, IECEx, and North American CSA). This simplifies inventory for global plants by allowing one part number to satisfy diverse regional safety requirements for hazardous areas.

Q3: Does the housing include the probe and cable?

A3: No. The 31000 series is the housing assembly only. Probes and extension cables must be ordered separately to match the specific electrical requirements of your Proximitor system.

Q4: How do I prevent the probe from moving after the gap is set?

A4: The housing features an external locknut. Once the gap voltage is verified via a multimeter, tighten the locknut to the specified torque to prevent vibration-induced migration.