Bently Nevada 330105-02-12-20-12-CN 3300 XL 8mm Probe Installation & Technical Guide
330105-02-12-20-12-CN Product Introduction
The Bently Nevada 330105-02-12-20-12-CN belongs to the 3300 XL 8mm proximity probe series. This system monitors shaft vibration and position. It operates with a 5-meter cable length and a 3/8-24 UNF thread. Many field engineers choose this model for its high linearity. Specifically, this probe works with Bently Nevada 3300 monitoring systems. Moreover, it resists oil and moisture in harsh environments. The Bently Nevada 330105-02-12-20-12-CN delivers a 7.87 V/mm output sensitivity.
Core Value
This probe offers stable performance for predictive maintenance. Firstly, it reduces unplanned downtime. Secondly, its non-contact design prevents wear on rotating parts. Therefore, you get longer machine life. Furthermore, the Bently Nevada 330105-02-12-20-12-CN improves safety monitoring. It detects early bearing faults and unbalance. Meanwhile, the system integrates easily with Allen-Bradley PLCs or Siemens controllers. Consequently, this model ensures high reliability for compressors, pumps, and steam turbines.
Technical Insights
The Bently Nevada 330105-02-12-20-12-CN uses an eddy current principle. It measures displacement without physical contact. Specifically, the probe tip diameter is 8 mm. The linear range spans from 0.25 mm to 2.29 mm. Moreover, the operating temperature ranges from -35°C to +120°C. The cable assembly includes a 12 mm hex nut for easy mounting. Additionally, this model meets API 670 standards for shaft vibration monitoring. For best results, pair the Bently Nevada 330105-02-12-20-12-CN with a 3300 XL extension cable and driver.
Installation & Maintenance
Install the Bently Nevada 330105-02-12-20-12-CN with proper gap voltage settings. Firstly, clean the mounting surface thoroughly. Then, set the initial air gap to 1.27 mm (50 mils). Use a torque wrench to tighten the locknut to 10 Nm. Secondly, avoid bending the cable sharply. This prevents internal wire damage. Meanwhile, check the probe tip for debris every six months. Also, verify the extension cable connection resistance. A typical reading stays below 2 ohms. Finally, recalibrate the system after any major machine overhaul.
Buyer’s Guide FAQ
1. What machines accept the Bently Nevada 330105-02-12-20-12-CN?
This probe fits centrifugal compressors, gas turbines, pumps, and electric motors.
2. Can I replace an older 3300 probe with the Bently Nevada 330105-02-12-20-12-CN?
Yes, this model directly replaces standard 3300 8mm probes. Use the same mounting thread and gap settings.
3. What cable length does the Bently Nevada 330105-02-12-20-12-CN include?
The probe comes with 2.0 meters of integral cable. You can add an extension cable up to 8.5 meters total.
4. How do I test the Bently Nevada 330105-02-12-20-12-CN after installation?
Apply a known displacement using a micrometer. Then, verify the output voltage matches the 7.87 V/mm sensitivity.
5. Does the Bently Nevada 330105-02-12-20-12-CN work with non-Bently monitors?
It works best with Bently Nevada 3300 or 3500 systems. Some third-party conditioners also support this probe.
