Bently Nevada 330910-10-22-10-01-CN 3300 NSv Proximity Probe

Product Overview

The 330910-10-22-10-01-CN (3300 NSv) is a specialized eddy-current proximity sensor engineered for high-precision displacement monitoring in restricted industrial spaces. As part of the Bently Nevada 3300 XL NSv series, this probe is specifically designed for centrifugal air compressors and refrigeration units where small shaft diameters (under 51 mm) or tight side-view clearances are present. The 330910-10-22-10-01-CN provides critical radial vibration and axial position data, utilizing a focused Narrow Side View (NSv) field that prevents interference from counterbore walls. This specific "-CN" variant is fully localized for the Chinese market, ensuring compliance with domestic safety and environmental regulations while maintaining the world-class machinery protection standards required to prevent catastrophic failure and reduce plant downtime.

Suffix Configuration Breakdown

The alphanumeric code 330910-10-22-10-01-CN defines the exact mechanical and regulatory build of the transducer:

• 330910: 3300 NSv Proximity Probe with M10X1 metric threading.

• 10 (Unthreaded Length): 10 mm unthreaded length on the probe case.

• 22 (Overall Case Length): 220 mm total case length for deep mounting requirements.

• 10 (Total Length): 1.0 meter (3.3 feet) integrated probe lead length.

• 01 (Connector/Cable): Miniature coaxial ClickLoc connector with integrated stainless steel armor for mechanical protection.

• CN (China Specific Approval): Mandatory certification suffix for the People's Republic of China, covering NEPSI, CCC, SRRC, and China RoHS (50-year environment-friendly use period).

Technical Specifications

Industrial Engineering FAQs

What is the significance of the -CN suffix for my project? The -CN suffix ensures the device is legally compliant for installation within the People's Republic of China. It verifies that the probe meets local explosive safety (NEPSI) and mandatory certification (CCC) laws. Functionally, it is identical to global 3300 XL sensors but includes the necessary local labeling and documentation required by Chinese inspectors.

How does the NSv technology handle "Side-View" interference? Standard probes have a wider magnetic field that can "see" the sides of a mounting hole, causing false readings. The NSv (Narrow Side View) technology focuses the field at the tip, allowing the probe to be installed in much tighter counterbores or closer to adjacent metal surfaces without signal distortion.

Is the stainless steel armor necessary for all applications? While not mandatory for signal transmission, the armor (Option 01) is highly recommended in heavy industrial environments where cables are exposed to foot traffic, falling tools, or mechanical abrasion. The armor also provides an additional layer of protection against RF interference when properly grounded.

Field Installation and Maintenance Directives

• Torque and Engagement: For the M10X1 probe case, the recommended installation torque is 7.5 N-m (66 in-lb). To preserve the integrity of the case and the internal coil, never exceed the maximum rated torque of 22.6 N-m (200 in-lb). Ensure at least 15 mm of thread engagement for a secure mount.

• Gap Voltage Calibration: For standard AISI 4140 steel targets, set the probe gap to achieve approximately -10 Vdc at the Proximitor Sensor output. This represents the center of the 1.5 mm linear range. Always verify this voltage with a calibrated digital multimeter before locking the mounting nut.

• Environmental Sealing: Although the probe is rated for high temperatures, long-term exposure to temperatures below -34 deg C (-30 deg F) can cause the pressure seal to fail prematurely. For installations in chemical or oil-heavy areas, use the provided silicone tape or dedicated connector protectors to prevent fluid ingress into the ClickLoc connector.

• Regulatory Compliance in China: When installing the -CN version, ensure the NEPSI and CCC labels remain visible and undamaged. These markings are required for the facility's safety audit and confirm the 50-year China RoHS compliance for environmental safety.