Essential Machine Health Monitor
This is the Bently Nevada 330881-16-04-138-03-02. It is a premium PROXPAC XL Proximity Transducer system. It detects vibration and position on rotating shafts. The sensor protects turbines, compressors, and pumps from failure. It delivers accurate data for predictive maintenance. Built in the USA for tough industrial use.
Why Choose This Transducer?
- Extended Reach: 138mm probe with a 40mm standoff adapter for deep mounting.
- Robust Connection: Includes one M20 fitting for secure conduit entry.
- Extreme Environment Ready: Operates from -51°C to +177°C.
- High Impact Strength: Housing certified by BASEEFA to withstand 4J impacts.
- Plug-and-Play: 1-meter cable with gold ClickLoc connector for easy setup.
Detailed Technical Specifications
- Manufacturer & Brand: Bently Nevada
- Full Model Number: 330881-16-04-138-03-02
- Core Function: Vibration and Position Measurement
- Linear Measuring Range: 2.0 mm (0.25 to 2.3 mm)
- Optimal Gap Setting: 1.27 mm (50 mils)
- Sensitivity / Scale Factor: 7.87 V/mm (±5%)
- Non-Linearity (DSL): < ±0.025 mm
- Frequency Response: 0 to 10,000 Hz
- Probe Operating Temp: -51°C to +177°C
- Housing Protection: IP66 (Dust & Water Jet Proof)
- Electrical Output: -1 to -17 Vdc (Analog)
- Power Requirement: -17.5 to -26 Vdc
- Required Target Size: Min 15.2 mm diameter
Model Configuration Breakdown
- Base Product: 3300 XL 8mm Transducer System
- Option [16]: Probe & Approvals
- Standard 8mm Probe
- No Special Certifications
- Option [04]: Standoff Adapter
- 40mm Adapter Length
- Option [138]: Probe Penetration
- Total Probe Length: 138mm
- Option [03]: Fittings
- One M20 Fitting Supplied
- Two Sealing Plugs
- Option [02]: Mounting Thread
- 3/4-14 NPT Thread Standard
- Option [16]: Probe & Approvals
Quick Installation Notes
- Mount using the 3/4-14 NPT thread on the 40mm standoff.
- Set probe tip to 1.27mm from the target shaft surface.
- Torque the probe sleeve locknut to 39.3 N·m.
- Connect the ClickLoc connector until it clicks.
- Use the provided M20 fitting for cable strain relief.
Compliance & Warranty
- Safety Certifications: BASEEFA (Report T07/0709), CSA.
- Environmental Rating: IP66 Verified.
- Temperature Codes: Complies with T1 to T5 classifications.
- Warranty Period: Full 12-month manufacturer warranty.
- Global Shipping: Fast delivery via FedEx, UPS, and DHL available.
Expert FAQ & Selection Guide
Configuration Questions
- What does the ’04’ option mean in the part number?
This specifies a 40mm standoff adapter. It spaces the sensor body away from the mounting point. - My application has high electrical noise. Is this sensor suitable?
Yes. The triaxial shielded cable and 50-ohm output resist interference effectively.
Technical Performance
- How fast can this transducer detect a change?
Its 10 kHz frequency response captures very rapid vibration changes in machinery. - Can it measure small diameter shafts?
The minimum recommended shaft diameter is 50.8mm for accurate measurement.
Purchasing Advice
- I need a different fitting type. Can you help?
Absolutely. Contact our team. We can source variants with different fittings or probe lengths.
Contact Us for Support
For technical questions or custom configuration help:
Email: info@oiltechcontrols.com
Phone/WhatsApp: +86 158 8020 0923
Copyright © 2026 Oiltech Controls Limited. All rights reserved.
Original Source: https://www.oiltechcontrols.com/
Partner: PLCDCS HUB Limited
Powergear X Automation Limited
All rights reserved.
Steven Parker –
This XL proximity transducer with standoff was used in a tight mounting space on a compressor skid. The standoff design made alignment much easier compared to our previous setup. The unit was new, well-packaged, and ready to install. Signal quality has been excellent since commissioning. OilTech Controls delivered quickly and confirmed compatibility before shipping. This product helped reduce installation time and improve measurement accuracy in a real-world industrial application.