330881-16-04-138-03-02 PROXPAC XL Proximity Transducer

Overview

Place of Origin:	USA
Brand Name:	Bently Nevada
Model Number:	330881-16-04-138-03-02
Packaging Details:	Original new Factory Sealed
Delivery Time:	5-7 days
Payment Terms:	T/T
Supply Ability:	In stock

Quick Detail

Description

The 330881-16-04-138-03-02 PROXPAC XL Proximity Transducer is a fully integrated 8 mm eddy current transducer assembly designed for high-precision shaft vibration and position monitoring in industrial machinery. This self-contained assembly combines a 3300 XL 8 mm probe with an internal Proximitor sensor, eliminating the need for separate extension cables and Proximitor housings. The PROXPAC XL housing is constructed from advanced Polyphenylene Sulfide (PPS) with reinforced glass and conductive fibers, offering superior mechanical strength and electrostatic dissipation compared to traditional steel or aluminum housings. Rated IP66 and Type 4X, it withstands harsh environments, including exposure to moisture, dust, and chemicals. With a linear range of 2 mm (80 mils), recommended gap of 1.27 mm (50 mils), and compatibility with shafts as small as 50.8 mm (2 in) in diameter, the PROXPAC XL transducer delivers precise radial vibration, axial position, and Keyphasor reference measurements. Its field wiring range of 0.2–1.5 mm² (16–24 AWG) and output resistance of 50 Ω ensure robust, low-noise signal transmission, while the standoff adapter (40 mm) and probe penetration length (138 mm) provide flexible mounting in confined spaces. Operating between -52°C and +100°C (-62°F to +212°F), the PROXPAC XL transducer ensures reliable performance for automation, predictive maintenance, and process control.

Applications

Rotating Turbomachinery Vibration Monitoring
The 330881-16-04-138-03-02 delivers high-resolution radial vibration data for steam and gas turbines, centrifugal compressors, turbo-expanders, and drive trains. The 8 mm eddy-current sensing mechanism supports precise condition-based diagnostics and machine protection routines integrated in modern control and automation platforms.

Axial Thrust and Position Feedback
With a 2 mm linear operating range and optimized 1.27 mm gap, the 330881-16-04-138-03-02 enables thrust position feedback for pump assemblies, gearbox systems, and industrial blowers, improving system reliability and reducing mechanical failure risks associated with thrust collar wear.

Keyphasor Reference Signal Generation
Through direct shaft reference tracking, the 330881-16-04-138-03-02 provides Keyphasor phase and speed reference signals essential for advanced vibration analysis, order tracking, and balancing processes performed in automated diagnostics and maintenance workflows.

Predictive Maintenance and Automation Systems
The rugged IP66 and Type 4X construction makes the 330881-16-04-138-03-02 suitable for integration with predictive maintenance platforms and distributed control systems (DCS). The consistent output signal quality and extended temperature range ensure reliable data acquisition for industrial analytics, performance optimization, and anomaly detection.

Specifications

Competitive Advantage

Integrated Probe and Proximitor Architecture
By combining the 8 mm probe and internal Proximitor sensor, the 330881-16-04-138-03-02 removes external cabling dependencies, reducing installation time, wiring errors, and system complexity. This integration also minimizes signal losses common to long analog cable runs.

Enhanced Environmental and Mechanical Robustness
The PPS composite housing offers corrosion resistance and electrostatic discharge protection not typically achievable with aluminum or steel. When combined with the IP66 and Type 4X certifications, the 330881-16-04-138-03-02 maintains signal integrity in harsh petrochemical, offshore, and refinery sectors.

High Accuracy for Industrial Automation and Control
With a 2 mm linear range and 50 ohm output resistance, the 330881-16-04-138-03-02 supports precise condition monitoring and closed-loop control tasks. The stable signal performance benefits predictive maintenance, machine protection systems, and advanced vibration diagnostics.

Wide Operating Temperature Range
The -52°C to +100°C operating envelope ensures that the 330881-16-04-138-03-02 functions reliably in extreme thermal environments, enabling application in power-plant basements, turbine enclosures, compressor skids, and outdoor industrial installations.

Flexible Mechanical Integration
The 40 mm standoff adapter and 138 mm probe penetration deliver mounting versatility, making the 330881-16-04-138-03-02 ideal for retrofit, upgrade, or OEM machine design where spatial constraints, housing geometries, and shaft configurations vary.