Applications

Competitive Advantage

• Fully self-contained design with integrated Proximitor sensor, eliminating the need for external housings and extension cables.

• Simplified installation and wiring by allowing direct field connections between the monitor and the assembly.

• Durable PPS housing reinforced with glass and conductive fibers, improving strength and electrostatic discharge protection.

• High environmental protection with Type 4X and IP66 ratings, ensuring reliable performance in harsh industrial conditions.

System Compatibility, Alternative Models, and Differences

• System Compatibility:
  Fully compatible with standard Bently Nevada continuous machinery monitoring networks (such as the 3500 series) via direct field wiring connections between the monitors and the housing. The embedded sensor architecture complies fully with API 670 industry parameters.
• Alternative Model (Metric Unit Equivalent):
  330881-28-00-216-06-02 (PROXPAC XL Metric Series)
• Key Differences between 330800 (English) and 330881 (Metric):

Measurement Scale System: The 330800 relies on fractional English options (ordered in 0.1-inch increments for penetration sleeves), while the metric 330881 configuration uses 1 mm increments.

Sleeve Dimension Matching: The 330800 model features a precise 8.5-inch (215.9 mm) penetration sleeve option. The closest matching baseline code for the metric 330881 series specifies a nominal 216 mm penetration option.

Conduit Connection Kit: The 330800 option D=03 provides a dedicated 3/4-14 NPT fitting paired with a 3/4-14 NPT to 1/2-14 NPT stainless steel reducer. The metric 330881 counterpart uses option D=06 to supply an identical physical reducer kit tailored for specific international plant routings.

Internal Structural Sizing: The mechanical hardware components vary slightly; the English standoff and sleeve options interface with standard fractional fractional tool sets, whereas the metric line incorporates metric flat dimensions.

Ordering Information

Installation & Troubleshooting FAQ

Q1: What is the proper gap installation voltage for setting up this self-contained transducer?

A: The recommended field calibration setting is a physical gap of 1.27 mm (50 mils) from the target face. At this position, the system output voltage should read approximately -10.0 VDC (corresponding to the midpoint of the 2.0 mm / 80 mil linear range). Adjust the probe placement via the threaded sleeve until your digital multimeter stabilizes at this value before tightening.

Q2: Why doesn't this specific assembly require an internal extension cable?

A: The self-contained PROXPAC XL architecture mounts the 3300 XL Proximitor sensor directly into the protective thermoplastic housing cover. This eliminates the classic intermediate extension cable between the probe case and the sensor, cutting out a common point of fluid contamination and signal loss in tough field areas.

Q3: Does this 8.5-inch penetration sleeve length require external mechanical bracing?

A: No. Since this model is configured with a 0.0-inch standoff (B=00) and an 8.5-inch penetration sleeve (C=085), the total length from the machine casing surface is under 12.0 inches (305 mm). External sleeve supports are only required when the combined "B" and "C" options exceed 12.0 inches to prevent structural resonance.

Q4: Fluid or oil mist is collecting inside my conduit routing. Will this compromise the sensor?

A: While the advanced glass-reinforced PPS housing is rated for Type 4X and IP66 water-tight performance, it cannot withstand sustained internal pressure or block moisture driving down from the conduit pipe itself. You must seal the conduit entries properly to prevent external condensation or oils from draining into the internal electronics enclosure.

Q5: What should be done if highly corrosive process gases leak through the internal probe seal?

A: The system seals internal case elements with a high-performance Viton O-ring and an outer Neoprene sleeve ring. However, extremely low or high pH chemicals can gradually erode the probe tip assembly over time, creating a pathway for media leakage. Plant operators must verify physical containment strategies because Bently Nevada does not warrant or replace proximity probes due to active chemical leakage.

Accessories