Product Overview

The Bently Nevada 330101-00-15-10-02-CN is a 3300 XL 8 mm eddy current proximity probe designed for Machinery Protection Systems (TSI). This non-contact sensor measures static gap and dynamic shaft vibration on rotating equipment.

The probe works with 3300 XL Proximitor Sensors and typically connects to Bently Nevada 3500/40M or 3500/42M monitoring modules. Common applications include radial vibration monitoring, axial thrust position measurement, keyphasor reference signals, and shaft eccentricity detection.

It is widely used on steam turbines, gas turbines, centrifugal compressors, pumps, and electric motors. This configuration includes a 3/8-24 UNF English thread, 1.5-inch case length, 1.0-meter integrated cable, miniature coaxial ClickLoc connector, standard fluid-resistant cable, and -CN hazardous area approvals for China.

Ordering Information

The following option codes define the exact configuration of the 330101-00-15-10-02-CN probe:

• Product Number: 330101-00-15-10-02-CN
• Unthreaded Length Option (-00): 0.0 inches
• Overall Case Length Option (-15): 1.5 inches
• Total Length Option (-10): 1.0 meter (3.3 feet)
• Connector and Cable Type (-02): Miniature coaxial ClickLoc connector with standard fluid-resistant cable
• Agency Approval Option (-CN): China hazardous area certification package

Technical Specifications

Engineering & Field Installation Notes

Mechanical Positioning & Target Calibration

1. Mechanical Clearance Check: Ensure the shaft target area is at least 15.2 mm (0.6 in) wide. Maintain a minimum 13 mm axial clearance from shoulders or counterbores.
2. Thread Engagement: Install the probe by hand into the mounting bracket or bearing housing. Do not rotate the probe while the extension cable is attached.
3. Electrical Gap Verification: Connect the probe, extension cable, and 3300 XL Proximitor. Supply -24 Vdc and monitor voltage between OUT and COM.
4. Setting the Midpoint: Adjust the probe until the output reads -10.0 Vdc. This equals approximately 1.27 mm (50 mils) gap.
5. Torque Application: Tighten locknuts to 11.3 N·m (100 in·lb). Do not exceed 22.6 N·m (200 in·lb).

Shielding & Grounding Architecture

• Single-Point Grounding: Ground the cable shield at one location only, typically at the 3500 monitor rack I/O module.
• Isolation: Keep the ClickLoc connector electrically isolated from machine ground. Use a connector protector sleeve to prevent moisture or oil contamination.
• Conduit Separation: Route transducer cables separately from AC power cables, VFD outputs, and switching control wiring.

Field Troubleshooting & Lifecycle Guidance

System Diagnostics via DC Voltage

Measure voltage between the Proximitor OUT and COM terminals to diagnose system conditions:

• -0.1 Vdc to -1.0 Vdc: Probe shorted to target or grounded connector.
• -10.0 Vdc: Normal mid-range operating condition.
• -17.5 Vdc to -26.0 Vdc: Open circuit condition caused by damaged cable, loose connector, or failed probe tip coil.

Counterfeit & Version Verification

The 330101-00-15-10-02-CN uses a purple cable jacket that identifies the 3300 XL 8 mm series. Matching extension cables and Proximitor sensors should also use purple labels or boots.

Mixing 3300 XL 8 mm components with 5 mm, 11 mm, or older 7200 series hardware causes calibration and linearity errors. Genuine probes include laser-etched part numbers on the stainless steel body and a tracking label near the connector.

Technical FAQ

• Can the 1.0-meter probe cable connect directly to a Proximitor sensor?
  No. The total electrical system length must match the Proximitor calibration. A 1.0-meter probe requires an extension cable to complete a 5.0-meter or 9.0-meter system.
• What does the "-CN" suffix mean?
  The -CN suffix indicates China hazardous area approvals, including applicable NEPSI and related certification documentation.
• What happens if the probe locknut is over-tightened?
  Excessive torque can deform the probe casing, damage the internal coil, or create intermittent open-circuit faults during machine thermal expansion.