Configured for non-contacting vibration and displacement measurements in rotating machinery, the Bently Nevada 330730-040-03-05 (330730 Proximity Probe) provides direct physical/electrical execution.

Suffix Breakdown Matrix

• 330730: Base model identifier for 3300 XL 11 mm proximity probe (M14 x 1.5 thread profile)

• -040: Unthreaded length option specified as 4.0 in

• -03: Case thread length option specified as 3.0 in

• -05: Total system length option specified as 0.5 m (1.6 ft)

Technical Specifications

Eddy-Current Probe Scaling and Rotor Dynamics Calibration

The 3300 XL 11 mm probe hardware mechanism relies on an extended eddy-current probe scaling format to accurately capture large fluid-film bearing clearance shifts. During initial commissioning on high-speed machine trains, proper gap voltage validation (-10 VDC targets) establishes the core baseline within the sensor's extended 4.0 mm linear tracking envelope. The 11 mm tip geometry optimizes high-frequency magnetic field saturation to achieve effective cross-talk suppression when mounted in dual-axial or orthogonal XY configurations tracking dynamic rotor dynamics.

Packaged Component List

• One (1) Bently Nevada 330730-040-03-05 11 mm proximity probe assembly

• Two (2) Brass locking hex nuts

• One (1) Coaxial connector insulation sleeve

Probe Mounting and Mechanical Alignment

Install the probe through the bracket assembly using standard mechanical depth indexing until a digital voltmeter monitoring the Proximitor sensor output reads exactly -10 VDC, indicating optimal centration within the linear range. Ensure a minimum radial clearance of 15.2 mm of clear space surrounding the 11 mm tip to prevent target-side housing interference from altering the factory scaling profile. Run the extension coaxial line through dedicated rigid conduit, isolating all inline miniature connectors with high-dielectric silicone sleeves, and tie the outer shield ground path exclusively to the instrumentation bulkhead rack.

Dispatch and Logistics Management

Delivery time: 3-5 days when payment finish, utilizing express dispatch networks via DHL/FEDEX/UPS. All items are housed in static-shielding industrial packaging containing desiccant packs and custom-cut, high-density polyethylene protective foam matrices to guarantee calibration retention and structural integrity during transit.

Engineering FAQ

Q: What occurs if this 0.5 m probe is connected directly to a Proximitor sensor without the corresponding extension cable?

A: The 3300 XL 11 mm proximity system requires a total electrical length match of either 5.0 m or 9.0 m. Operating this 0.5 m probe without its matching extension cable destroys the tuned capacitance loop, rendering eddy-current probe scaling non-functional.

Q: Can the probe tip tolerate direct contact with the target surface during rotor dynamics transitions?

A: No. Mechanical contact with the rotating shaft will cause immediate frictional heating, destroying the polyphenylene sulfide (PPS) tip encapsulation and permanently damaging the internal eddy-current coil structure.

Q: Can the extension cable connection be broken while the monitor rack channel is active?

A: Yes. Disconnecting the miniature coaxial junction during operation is physically permitted; however, this cuts the sensor loop, causing the monitor to trip a "NOT OK" fault condition and bypass safety relays.