Product Overview

The Bently Nevada 330880-28-15-051-00-02 is a complete PROXPAC XL proximity transducer system. This model includes a 3300 XL 8 mm probe with multiple approvals. The unit features a 1.5 inch standoff adapter and 51 mm probe penetration. This design combines the probe and Proximitor sensor into one rugged housing. The Bently Nevada 330880 series eliminates separate probe cables for easier installation. This configuration suits hazardous area applications requiring certified equipment.

Technical Specifications

Measurement & Performance

• Linear Range: 2 mm (80 mils). The range begins at 0.25 mm from the target surface.

• Incremental Scale Factor (ISF): 7.87 V/mm (200 mV/mil) ±5%. This applies from 0°C to +45°C over the full 80 mil range.

• Deviation from Best Fit Straight Line (DSL): Less than ±0.025 mm (±1 mil) at 0°C to +45°C.

• Frequency Response: 0 to 10 kHz (+0, -3 dB). This works with up to 305 meters of field wiring.

• Minimum Target Size: 15.2 mm (0.6 in) diameter flat target.

• Minimum Shaft Diameter: 50.8 mm (2.0 in).

• Recommended Gap Setting: 1.27 mm (50 mils).

Electrical Parameters

• Power Requirement: Needs -17.5 Vdc to -26 Vdc without barriers. Maximum current draw is 12 mA.

• Power with Barriers: Requires -23 Vdc to -26 Vdc when using safety barriers.

• Operation Warning: Voltage more positive than -23.5 Vdc will reduce the linear range.

• Supply Sensitivity: Less than 2 mV output change per volt of input change.

• Output Resistance: 50 Ω.

• Field Wiring: Use 0.2 to 1.5 mm² (16 to 24 AWG) 3-conductor shielded triax cable. Maximum field wiring length is 305 meters.

Environmental Limits

• Probe Operating Temperature: -51°C to +177°C (-60°F to +350°F).

• Low Temperature Warning: Exposing the probe below -34°C may cause premature pressure seal failure.

• Housing Rating: IP66 verified by BASEEFA report T07/0709.

• Housing Impact Strength: Withstands 4 Joule impacts at -39°C and +115°C per BASEEFA. CSA verified 7 Joule impact at room temperature.

Mechanical Features

• Probe Type: 3300 XL 8 mm probe with multiple approvals (option 28).

• Standoff Adapter: 1.5 inches (option 15).

• Probe Penetration: 51 mm (option 051).

• Fittings: No fittings included. Package contains two plugs and two washers (option 00).

• Mounting Thread: 3/4-14 NPT (option 02).

• Probe Tip Material: Polyphenylene Sulfide (PPS).

• Probe Case Material: AISI 304 stainless steel.

• Probe Cable: 1-meter length, 75 Ω triaxial, FEP insulated.

• Probe Connector: Gold-plated brass ClickLoc* connector.

• Probe Tensile Strength: 330 N (75 lb) maximum between cable and case.

• Housing Material: UV-resistant, glass-reinforced PPS thermoplastic with conductive fibers.

• Sleeve Material: AISI 304 stainless steel.

• Outer Sleeve and Retaining Screws: AISI 303 stainless steel.

• Sleeve O-Ring Material: Neoprene.

• Grounding Liner and Retaining Plate: AISI 304 stainless steel.

• Vibration Isolation Material: Extra soft cellular silicone.

• Lid Label Material: Gloss radiant white polyester.

• Recommended Torque (Retaining Nut): 29.5 N·m (260 in·lb).

• Recommended Torque (Probe Sleeve Locknut): 39.3 N·m (350 in·lb).

Housing Strength Data

The outer sleeve was mounted on a test stand with its axis parallel to horizontal. The housing supported 912 N (205 lbf) placed approximately 38 mm (1.5 in) from the unsupported end. The cover was fastened in place with the grounding liner installed.

Installation Guidelines

Follow these steps to install the Bently Nevada 330880-28-15-051-00-02 correctly.

1. Surface Preparation: Clean the 3/4-14 NPT mounting hole thoroughly. Remove all burrs, oil, and debris.

2. Standoff Installation: Thread the 1.5 inch standoff adapter into the housing first. Apply light anti-seize compound to the threads.

3. Probe Insertion: Insert the approved 8 mm probe to achieve the 51 mm penetration depth. Measure from the probe tip to the mounting surface.

4. Torque Application: Tighten the retaining nut to 29.5 N·m. Then tighten the probe sleeve locknut to 39.3 N·m.

5. Gap Setting: Set the initial air gap to 1.27 mm (50 mils). Use a non-magnetic feeler gauge for accuracy.

6. Port Sealing: Install the two plugs and two washers (option 00) into unused ports. Ensure a tight seal to maintain IP66 rating.

Packaging List

• 1 x Bently Nevada 330880-28-15-051-00-02 PROXPAC XL Proximity Transducer

• 1 x 3300 XL 8 mm probe assembly with multiple approvals

• 1 x 1.5 inch standoff adapter

• 1 x 51 mm probe penetration sleeve

• 2 x Plugs (for unused ports)

• 2 x Washers

• 1 x Pre-attached 1-meter triaxial probe cable with FEP insulation

• 1 x Gold-plated brass ClickLoc* connector

• 1 x AISI 304 stainless steel retaining chain

• 1 x Extra soft cellular silicone vibration isolator

• 1 x Neoprene sleeve O-ring

• 1 x AISI 304 stainless steel grounding liner and retaining plate

Common FAQs

1. What approvals does the probe on this 330880 model carry?
The Bently Nevada 330880-28-15-051-00-02 includes a 3300 XL 8 mm probe with multiple approvals (option 28). These approvals cover hazardous area installations per BASEEFA and CSA standards.

2. Why does this model use a 1.5 inch standoff instead of a metric one?
The 1.5 inch standoff (option 15) suits machines with imperial mounting dimensions. This matches the 3/4-14 NPT thread requirement for standoff adapter orders.

3. Can I use this transducer with safety barriers?
Yes. When using barriers, the power requirement changes to -23 Vdc to -26 Vdc. Do not operate above -23.5 Vdc or the linear range will reduce.

4. What are the two plugs and two washers used for?
The package includes two plugs and two washers (option 00) to seal any unused ports on the housing. This helps maintain the IP66 environmental rating.

5. How does the 51 mm penetration depth work with the 1.5 inch standoff?
The 51 mm penetration (option 051) measures from the probe tip to the mounting surface. The 1.5 inch standoff adds length to position the probe correctly. Always verify your machine's internal clearance before installation.