The Bently Nevada 330905-00-25-05-12-CN, also cataloged as the 330905 Proximity Sensors, operates as a dedicated hardware component for non-contact shaft vibration, radial displacement, axial position, and phase reference measurements within 3300 XL NSv transducer platforms. Designed for small-shaft applications and restricted counterbores, this probe features an unarmored M10 x 1 threaded stainless steel casing with 0 mm unthreaded length, a 25 mm overall case length, and a 0.5 m FluidLoc coaxial cable terminated with a miniature ClickLoc connector and China (CN) regional certification.
Suffix Breakdown & Model Matrix
| Option Code | Parameter Designation | Selected Configuration |
|---|---|---|
| 330905 | Base Model | 3300 NSv Proximity Probe, M10 x 1 thread |
| -00 | Unthreaded Length | 0 mm |
| -25 | Overall Case Length | 25 mm |
| -05 | Total Length Option | 0.5 m (20 in) |
| -12 | Cable & Connector Option | FluidLoc coaxial cable, miniature coaxial ClickLoc connector |
| -CN | Agency Approval Option | China (CN) certification |
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 330905-00-25-05-12-CN |
| Brand | Bently Nevada |
| Origin | United States |
| Weight | 0.15 kg |
| Dimensions | M10 x 1 thread profile (25 mm overall case length) |
| Operating Temp | -34 deg C to +177 deg C (-30 deg F to +351 deg F) |
| Power Consumption | Passive transducer (Powered via Proximitor Sensor) |
| Thread Type | M10 x 1 (without armor) |
| Cable Specification | FluidLoc oil-sealed 75 Ohm coaxial cable |
| Connector Type | Miniature coaxial ClickLoc connector |
| Agency Approvals | China (CN) certification |
Mechanical Monitoring & TSI Performance
The 330905-00-25-05-12-CN proximity probe utilizes precision eddy-current probe scaling to monitor dynamic rotor dynamics on small-diameter shafts where installation space is severely constrained. The integrated FluidLoc cable prevents oil and process fluids from wicking internally through the coaxial cable, maintaining sealed pressure barriers in machine housings. During installation, performing gap voltage validation to achieve a target reading of -10 VDC verifies that the transducer operates within the center of its linear voltage response, delivering effective cross-talk suppression in high-density sensor arrangements.
Frequently Asked Questions
Q: How does the FluidLoc cable option differ from standard coaxial probe cables?
A: The FluidLoc cable configuration incorporates internal structural blocking that prevents oil or liquid lubricants from leaking along the inside of the cable wire strands into external enclosures.
Q: What gap voltage target establishes correct physical positioning during setup?
A: Adjust probe thread insertion depth until the voltage measured at the connected 3300 NSv Proximitor Sensor output reaches -10 VDC, centering the sensor in its calibrated linear voltage range.
Q: Can the 0.5 m probe cable connect directly to system monitoring terminals?
A: No. The integrated 0.5 m (20 in) FluidLoc cable must attach via its miniature ClickLoc connector to a matching 3300 NSv extension cable to establish the complete calibrated loop length required by the Proximitor Sensor.
Field Installation Guidelines
- Thread the M10 x 1 probe case into the tapped mounting port manually to ensure correct alignment before tightening with tools.
- Maintain at least 5 full threads of engagement in the housing port to prevent loosening caused by machinery vibration.
- Route the FluidLoc coaxial cable along structural supports, avoiding sharp metal corners and maintaining safe clearance from AC power wiring.
- Clean the miniature coaxial ClickLoc connector contacts prior to mating and fully engage the locking mechanism.
What's clients say about us
Excellent Emergency Support!
Our production line was down due to a faulty Bently Nevada monitor. We found it in stock here and they shipped it via DHL immediately. Back in operation within 48 hours—truly a lifesaver for our plant.
Mark Thompson
Maintenance Manager, USAReliable Source for New Spares
Finding brand new, original modules is critical for our safety. This team delivers factory-fresh components with full certification. Their commitment to only selling new products makes them our most trusted partner.
Robert Hoffmann
Engineering Lead, GermanyTop-tier Service and Quality
We have sourced Honeywell and Schneider parts here for two years. Every shipment arrives well-packaged with original factory seals intact. Clear communication and the best lead times in the industry.
Lucas Müller
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Guide
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