The Bently Nevada 330910-03-20-05-11-00, also cataloged as the 330910 3300 NSv Proximity Probe proximity probe, operates as a non-contact eddy-current sensing element for displacement measurement within 3300 NSv monitoring chains. Signal generation is based on electromagnetic field variation across a calibrated probe gap referenced to shaft surface motion in the transducer system.

Hardware Specifications

Eddy Current Probe Scaling and Signal Stability

The 3300 NSv probe element operates under eddy-current displacement conversion principles where coil impedance variation is translated into proportional gap voltage variation in the associated driver system. Calibration stability depends on consistent probe tip geometry and fixed installation gap reference.

Gap voltage response is referenced against nominal shaft target behavior typically aligned with -10 VDC full-scale displacement mapping in compatible 3300 series drivers. Deviation in probe standoff distance directly affects linearity of the displacement output curve.

Cross-talk suppression is managed through coaxial shielding integrity and controlled return path impedance. Improper routing of adjacent sensor cabling can introduce electromagnetic coupling effects, impacting phase stability in high-speed rotating machinery measurements.

Technical Questions

Q: Is the 330910 probe electrically powered directly?
A: The probe is passive and operates through excitation provided by the associated driver module in the measurement chain.

Q: Can the probe cable be extended in the field?
A: Extension is restricted to approved coaxial assemblies to maintain impedance matching and signal integrity.

Q: What is the function of the ClickLoc connector?
A: It provides mechanically keyed, low-resistance signal coupling between probe and extension cable assembly.

Q: Does installation orientation affect measurement output?
A: Yes. Axial alignment relative to shaft centerline directly influences linear displacement response accuracy.

Q: What is the impact of incorrect probe gap setting?
A: Incorrect gap positioning results in nonlinear voltage response and reduced measurement resolution.

Field Installation Guidelines

Ensure probe mounting threads (M10 x 1) are installed with controlled torque to prevent mechanical stress on the sensing element. Maintain minimum unthreaded length clearance of 30 mm to avoid casing interference.

Route coaxial cable away from high current conductors and switching devices to reduce induced noise coupling. Maintain continuous shielding from probe head to monitoring system input termination point.

Use single-point grounding for cable shield termination to avoid ground loop formation in multi-channel vibration monitoring configurations.

Verify probe tip alignment perpendicular to shaft surface within allowable mechanical tolerance before system calibration.

Ordering Info

• 330910-03-20-05-11-00 NSv Proximity Probe

• Integrated ClickLoc connector with protector

• FluidLoc coaxial cable assembly

• Anti-static sealed industrial packaging

• Documentation set (installation reference sheet)

Delivery Information

Delivery time: 3-5 days when payment finish, or 2-7 days when payment finish depending on logistics route. Shipment via DHL, FedEx, or UPS with anti-static industrial packaging, reinforced probe protection sleeve, and vibration-safe carton handling.