Product Overview

The Bently Nevada 330800-16-15-020-01-02 PROXPAC XL represents a premier integrated solution for vibration monitoring in high-stakes rotating machinery. This assembly combines a 3300 XL 8 mm proximity probe and a Proximitor sensor into a single, ruggedized industrial housing. Designed specifically for critical assets like steam turbines, axial compressors, and large pumps, the PROXPAC XL eliminates the need for external Proximitor mounting, significantly reducing installation complexity and wiring costs. It excels in capturing real-time shaft vibration and axial position data, providing the precise analog feedback required for Turbine Supervisory Instrumentation (TSI) and Emergency Shutdown (ESD) systems. Its robust design ensures long-term signal integrity even in the most corrosive and high-vibration industrial environments.

System Configuration & Suffix Logic

330800 Specialized Parameter Mapping

The suffix string 330800-16-15-020-01-02 defines the precise mechanical and electrical architecture of this integrated unit:

Probe and Fitting Option (-16)

The 16 suffix specifies a 3300 XL 8 mm reverse mount probe with 3/8-24 UNF threads, ensuring high-sensitivity measurement and mechanical stability within the internal assembly.

Standoff Adapter Option (-15)

The 15 designation indicates the inclusion of a 1.5-inch standoff adapter. This allows the housing to be mounted at a safe distance from the machine casing while maintaining the necessary probe reach.

Probe Penetration Depth (-020)

The 020 code signifies a 2.0-inch probe penetration depth. This allows the probe tip to reach the target surface accurately through the standoff and machine wall for optimized signal response.

Mounting Thread Option (-01)

The 01 suffix defines the mounting thread as 1/2-14 NPT, providing a standard, secure interface for North American and global industrial conduit systems.

Agency Approval (-02)

The 02 code represents Multi-Agency approvals, including CSA, ATEX, and IECEx certifications. This permits safe operation in hazardous environments categorized as Class I, Division 1, or Zone 0/1.

Core Operational Specifications

Mechanical Installation Protocol

Successful commissioning of the 330800 assembly mandates precise gapping. Engineers should aim for a quiescent gap voltage of -10 VDC at the signal output, which signifies the midpoint of the 80-mil linear range. Use a digital multimeter to verify this voltage during the mechanical threading process before tightening the locknuts. Ensure that all conduit entries are sealed with appropriate NPT-rated thread sealant to maintain the IP66 rating. For hazardous area installations, verify that the grounding lug on the PROXPAC housing is connected to a low-impedance plant ground to mitigate EMI/RFI interference and ensure intrinsic safety compliance.

Performance and Integration Assets

The PROXPAC XL housing is cast from low-copper aluminum, providing superior resistance to salt spray and atmospheric corrosion. Its integrated design serves as a "plug-and-play" vibration solution that bridges the gap between field sensors and control room DCS systems like Honeywell Experion or Siemens PCS7. By housing the signal conditioner (Proximitor) directly at the measurement point, the system minimizes the risks associated with coaxial cable damage and signal attenuation. This assembly is the industry preferred choice for retrofitting older machinery with modern, high-fidelity monitoring capabilities without the need for extensive structural modifications.

Shipping and Fulfillment Standards

We provide specialized logistics for critical instrumentation to ensure factory-level calibration is preserved.

Delivery Schedule: 2-7 days when payment finish, with real-time tracking provided.

Carrier Selection: Professional global transit via DHL, FEDEX, or UPS.

Industrial Packaging: Each unit is shipped in original factory-sealed anti-static barrier bags. We utilize double-wall reinforced shipping cartons with custom-molded high-density foam inserts to protect the internal probe tip and coaxial linkages during international transport.

Technical Support FAQ

Q1: Can I replace the internal probe if it gets damaged?

A1: Yes. The 330800 assembly allows for the internal 3300 XL reverse mount probe to be replaced. However, you must ensure the replacement probe length and penetration depth exactly match the original suffix configuration.

Q2: What is the benefit of the -15 standoff adapter?

A2: The standoff adapter provides thermal isolation between the machine casing and the internal Proximitor sensor, protecting the electronics from high-temperature bearing housings while allowing the probe to reach the shaft.

Q3: Is this assembly compatible with a 5-meter system?

A3: No. The 330800 PROXPAC XL is designed as a 9-meter total electrical system. Using extension cables or probes designed for a 5-meter system will cause significant calibration errors and non-linear output.