Product Overview

The Bently Nevada 330881-BR-04-110-06-02 PROXPAC XL serves as a robust, self-contained housing system designed to facilitate the installation of 3300 XL 8mm proximity probes in harsh industrial environments. This assembly combines a probe, extension cable, and Proximitor sensor into a single, compact unit, significantly simplifying the field wiring process. Engineered for critical rotating machinery monitoring, the PROXPAC XL provides superior mechanical protection against physical impact and environmental contaminants. It plays a vital role in Turbine Supervisory Instrumentation (TSI) by ensuring the stability of vibration and position signals, even in locations exposed to moisture, chemicals, or extreme weather. By integrating the transducer components within a rugged enclosure, this model reduces installation time and enhances the overall reliability of the machinery protection loop.

Housing Configuration Matrix

Decoding the Suffix Logic

The part number 330881-BR-04-110-06-02 specifies the exact mechanical and electrical configuration for the assembly:

Probe and Approvals (BR): 3300 XL 8mm Probe with Brazilian (INMETRO) and multiple international hazardous area approvals.

Probe Mount / Cable (04): Reverse mount probe with 1.0 meter cable and stainless steel armored conduit for maximum durability.

Standoff Length (110): Specifies a 1.1-inch standoff distance, allowing for precise adjustment of the probe gap relative to the shaft.

Probe Total Length (06): Indicates a 0.6-meter total length for internal wiring, optimized for the compact internal geometry of the housing.

Approval Option (02): Multiple Approvals including ATEX, IECEx, and North American standards for deployment in Class I, Division 1 and Zone 0 areas.

Mechanical and Environmental Parameters

Field Commissioning Protocol

Successful deployment of the PROXPAC XL requires precise gapping of the internal reverse-mount probe. Technicians must utilize the external standoff adjustment to set the static "Gap Voltage" to -10.0 VDC, ensuring the sensor operates at the center of its 80-mil linear range. Prior to sealing the housing, verify that the armored conduit is securely fastened to prevent moisture ingress. All electrical connections within the housing must remain clean and dry; any contamination on the coaxial ClickLoc connectors can cause signal attenuation or "Not OK" status indicators on the 3500 rack. Ensure the housing is properly grounded to the machine casing to minimize electromagnetic interference (EMI).

Engineering Excellence & Integration

The 330881-BR-04-110-06-02 is purpose-built to withstand the extreme conditions of petrochemical plants and power generation facilities. Its integrated design eliminates the need for external Proximitor sensors mounted in separate junction boxes, reducing the footprint of the monitoring system. It provides a seamless buffered signal output that integrates natively with Honeywell Experion PKS or Emerson DeltaV via Bently Nevada 3500 series monitors. This assembly ensures that high-fidelity vibration data reaches the System 1 diagnostic platform without signal degradation, allowing for advanced orbit analysis and machinery health assessment.

Ordering info

• Complete PROXPAC XL Housing Assembly (330881)

• Pre-installed 3300 XL 8mm Reverse Mount Probe

• Integrated Internal Extension Cable

• Internal 3300 XL Proximitor Sensor (Configured)

• Factory Test Certificate and Installation Manual

• Heavy-duty Mounting Gaskets and Bolts

Shipment & Fulfillment Details

Delivery time: 3-5 days when payment finish. All units are shipped via premium logistics providers such as DHL, FEDEX, or UPS with real-time tracking. We utilize anti-static industrial packaging and moisture-barrier vacuum seals to protect the sensitive internal electronics. Each PROXPAC XL assembly is secured in impact-resistant crates to ensure the factory-calibrated standoff and probe settings remain intact during global transit.

Machinery Protection FAQ

Q1: What is the primary advantage of the PROXPAC XL over standard probe installations?

A1: The PROXPAC XL integrates the probe, cable, and Proximitor into one housing. This drastically reduces external cabling, eliminates the need for a separate junction box, and provides much higher physical protection for the sensor components.

Q2: How do I adjust the probe gap without opening the main housing?

A2: The PROXPAC XL features an external standoff adjustment mechanism. By loosening the locknut on the standoff, you can rotate the assembly to move the probe closer to or further from the shaft until the desired gap voltage is achieved.

Q3: Is the internal Proximitor sensor replaceable?

A3: Yes, the internal 3300 XL Proximitor sensor can be replaced if necessary. However, the assembly must be opened in a clean, dry environment to ensure no moisture is trapped inside the housing during reassembly.

Q4: Does this unit support 9-meter system lengths?

A4: The PROXPAC XL is typically configured as a self-contained 5-meter or 9-meter system. This specific model uses the internal probe and cable lengths optimized for its housing size to maintain the correct electrical system length.