specification

Probe and Approvals Option:3300 XL 8 mm probe with Multiple Approvals

Standoff Adapter Option (B Dimension):Minimum length: No standoff adapter

Probe Penetration Option (C Dimension):3.5in

Fittings Option:One 3/4-14 NPT fitting, two plugs

Mounting Thread Option：3/4-14 NPT (Required if ordering Standoff Adapter Option.) 

Control&Communication

• Integrated signal processing: 330880-28-00-035-01-02 features a built-in 3300 XL Proximitor sensor, enabling direct signal conversion and reducing external communication components.

• Direct monitoring connection: Field wiring connects straight to control systems, eliminating extension cables and improving signal transmission efficiency.

• Stable analog output: Provides reliable voltage output proportional to probe gap, ensuring accurate vibration and position data communication.

• Simplified system architecture: Self-contained design removes separate Proximitor housings, reducing wiring complexity and improving control integration.

• Enhanced signal integrity: PPS housing with conductive fibers helps reduce EMI/ESD interference, maintaining stable communication performance.

• Industrial system compatibility: Designed for seamless integration with 3300 XL monitoring systems, supporting standardized control and condition monitoring networks.

System Compatibility

• Field Monitoring Loop: Connects directly to Bently Nevada machinery monitors via a standard 3-conductor shielded triax cable up to 305 meters (1,000 feet) long.
• Internal Transducer Components: Houses a built-in 3300 XL 8 mm proximity probe with a 1-meter cable length pre-installed in the internal sleeve.
• Conduit Infrastructure: Integrates into field wiring systems via a single 3/4-14 NPT conduit fitting with two matching blanking plugs.

Substitute Configuration & Technical Differences

• Alternative Base Variant: Bently Nevada PROXPAC XL Proximity Transducer, Metric (Model: 330881-28-00-088-01-02).
• Key Differences:

• Measurement Scale System: The 330880 base series is dimensioned entirely in English units (inches), whereas the 330881 variant uses metric units (millimeters).
• Sleeve and Standoff Sizing: The English model utilizes a 3.5-inch sleeve length option (coded as 035), while the equivalent metric alternative relies on a standardized 88mm sleeve footprint (coded as 088) to adapt to machine casing penetrations.

Ordering Information

Installation & Troubleshooting FAQ

Q1: What are the primary structural advantages of the advanced thermoplastic material used in this housing?
A: The housing body is molded from Polyphenylene Sulfide (PPS) reinforced with glass and conductive fibers. This design eliminates steel or aluminum weight, strengthens physical body integrity, and dissipates electrostatic charges.

Q2: How does this configuration eliminate the need for traditional proximity system extension cables?
A: The housing cover contains its own 3300 XL Proximitor sensor. The pre-installed 1-meter probe cable plugs directly into this integral sensor inside the casing, meaning external field wiring lands directly on the lid terminals.

Q3: My transducer system shows an electrical fault after exposure to harsh clean-ups. Can fluid leak into the housing?
A: The main body achieves IP66 and Type 4X ratings via built-in Viton and Neoprene O-ring seals. Ensure your conduit entries are tightly sealed with self-fusing tape because moisture traveling down field conduits can still compromise terminal contacts.

Q4: What is the correct tightening torque value for securing the outer probe sleeve locknut?
A: To maintain mechanical stability, prevent thread binding, and ensure proper sealing, tighten the main probe sleeve locknut to a recommended torque value of 39.3 N-m (350 in-lb).

Q5: Will brief exposure to raw steam lines or high-temperature oil compromise the structural plastic shell?
A: Brief periods of contact with hot water up to 95°C (203°F) or condensing steam will not significantly affect housing strength. Avoid continuous, long-term exposure exceeding 6 to 8 weeks, as prolonged contact can reduce thermoplastic housing strength by half.

Accessories