Bently Nevada 330881-28-10-142-03-02 PROXPAC XL Probe
Introduction:
The Bently Nevada 330881-28-10-142-03-02 is a complete PROXPAC XL proximity transducer system. This model integrates a 3300 XL 8 mm probe with multiple approvals. It provides precise shaft vibration and position measurement. You can use this transducer for critical turbomachinery like compressors and turbines. The Bently Nevada 330881-28-10-142-03-02 delivers reliable data for predictive maintenance.
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Product Attributes:
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Technical Specifications
Electrical Parameters
Power Requirement: Needs -17.5 Vdc to -26 Vdc without barriers. Maximum consumption is 12 mA.
Linear Range: Measures 2 mm (80 mils). The range starts at 0.25 mm from the target.
Incremental Scale Factor (ISF): Provides 7.87 V/mm (200 mV/mil) ±5% over 0°C to +45°C.
Frequency Response: Ranges from 0 to 10 kHz with +0, -3 dB. Works with up to 305 metres of field wiring.
Output Resistance: Fixed at 50 Ω for stable signal transmission.
Mechanical & Environmental Limits
Probe Tip Material: Made of Polyphenylene Sulfide (PPS) for durability.
Probe Case Material: Uses AISI 304 stainless steel to resist corrosion.
Housing Rating: Achieves IP66 rating verified by BASEEFA report T07/0709.
Probe Temperature Range: Operates from -51°C to +177°C (-60°F to +350°F).
Housing Impact Strength: Certified to withstand two separate 4 Joule impacts at -39°C and 115°C.
Total System Weight: Typical weight is 1.44 kg (3.2 lbm) with a 0.3 metre sleeve.
Physical Dimensions & Options
Standoff Adapter (B Dimension): Set to 100 mm for proper positioning.
Probe Penetration (C Dimension): Fixed at 142 mm total length.
Mounting Thread: Uses 3/4-14 NPT as required for the standoff adapter.
Fittings Option: Includes one M20 fitting and two plugs.
Probe Cable: Features a 1-metre length, 75 Ω triaxial cable with FEP insulation.
Probe Tensile Strength: Supports up to 330 N (75 lb) between probe cable and case.
Installation Guide
Follow these steps to install the Bently Nevada 330881-28-10-142-03-02 correctly.
Prepare the mounting hole: Ensure threads match the 3/4-14 NPT option.
Set the recommended gap: Adjust the probe to a 1.27 mm (50 mils) gap from the target.
Tighten the retaining nut: Apply 29.5 N·m (260 in·lb) of torque.
Secure the probe sleeve locknut: Use 39.3 N·m (350 in·lb) of torque.
Connect field wiring: Use a 3-conductor shielded triax cable. Maximum length is 305 metres.
Verify power supply: Confirm voltage is between -23 Vdc and -26 Vdc with barriers.
Packaging List
1 x PROXPAC XL proximity transducer assembly (Model 330881-28-10-142-03-02)
1 x 3300 XL 8 mm probe with multiple approvals (Option 28)
1 x Standoff adapter (100 mm B dimension)
1 x M20 fitting and two plugs (Fittings Option 03)
1 x Mounting thread adapter (3/4-14 NPT)
1 x Installation manual (printed quick-start guide)
1 x Gold-plated brass ClickLoc connector (pre-attached)
Frequently Asked Questions (FAQ)
Q1: What is the linear range of the Bently Nevada 330881-28-10-142-03-02?
A1: The linear range is exactly 2 mm (80 mils), starting from 0.25 mm to 2.3 mm from the target.
Q2: Can this transducer work in high-temperature areas?
A2: Yes, the probe operates from -51°C to +177°C. The housing supports extreme environments.
Q3: What minimum shaft diameter does this probe require?
A3: The Bently Nevada 330881-28-10-142-03-02 requires a minimum shaft diameter of 50.8 mm (2.0 inches).
Q4: How do I avoid reduced linear range during operation?
A4: Never operate above -23.5 Vdc. A more positive voltage than -23.5 Vdc will reduce the linear range.
Q5: Is the housing resistant to moisture and dust?
A5: Absolutely. The housing has an IP66 rating, verified by BASEEFA, for full dust and water jet protection.