Configured for shaft displacement monitoring in mechanical platforms, the Bently Nevada 330706-005-046-10-02-00 (330706-005-046-10-02-00 Proximity Probe) provides direct physical/electrical execution of non-contacting position signal conditioning.

Model Matrix Decomposition

• 330706: Base Model (3300 XL 11 mm Reverse Mount Proximity Probe)

• 005: Unthreaded Length (5 mm)

• 046: Overall Case Length (46 mm)

• 10: Total Length (1.0 meter)

• 02: Connector Type (Miniature coaxial ClickLoc connector)

• 00: Agency Approval (Not applicable / Standard)

Hardware Specifications

Mechanical Monitoring & TSI Characteristics

The 3300 XL 11 mm transducer system utilizes specific eddy-current probe scaling to convert shaft motion into a linear voltage output. Gap voltage validation against -10 VDC targets at the oscillator output is required during site installation to ensure the probe tip is maintained within its linear measurement range. The system supports rotor dynamics analysis by ensuring stable signal transmission. Cross-talk suppression is maintained through matched oscillator frequencies, which prevents signal interference in installations involving multiple adjacent proximity probes on a single machine train.

Ordering Info

• One (1) 330706-005-046-10-02-00 Proximity Probe

• Protective connector cap

• Installation technical documentation

Field Installation Guidelines

• Mounting: Install the probe into the reverse-mount housing; secure with the provided jam nut while ensuring the physical gap aligns with the -10 VDC target.

• Cabling: Use factory-terminated coaxial cabling; route through grounded metallic conduit to protect against electromagnetic interference.

• Connection: Verify that all coaxial connections are clean, hand-tightened, and free of debris to prevent signal impedance variations.

• Grounding: Establish a continuous ground path from the probe body to the machine housing to maintain a reliable signal reference.

• Verification: Perform a static gap check using a high-impedance voltmeter before machine startup to confirm correct electrical positioning.

Frequently Asked Questions

• Q: Is the 330706 probe compatible with standard 8 mm oscillators?

  A: No, the 11 mm probe requires a matched 11 mm oscillator to ensure the correct scaling factor and signal integrity.

• Q: How is the probe tip gap measured?

  A: The gap is measured electrically by reading the DC voltage at the oscillator output; the nominal target is -10 VDC within the linear range.

• Q: Can the coaxial cable be field-repaired?

  A: No, field repair of the coaxial cable is not permitted as it alters the impedance and electrical resonance of the calibrated transducer system.

• Q: How does material type affect probe sensitivity?

  A: Sensitivity is calibrated for 4140 steel; different target materials require a scaling factor adjustment to ensure measurement accuracy.

• Q: What is the benefit of the reverse-mount configuration?

  A: The reverse-mount configuration allows for installation where space is constrained on the machine side of the mounting bracket.

• Q: Can the probe be used without an oscillator?

  A: No, the probe is a passive device that requires a matched oscillator to generate the carrier signal and demodulate displacement data.

• Q: What causes erratic gap voltage readings?

  A: Erratic readings often result from loose connections, electrical noise, target surface irregularities, or damage to the probe tip and coaxial cable.

• Q: Should thread-locking compound be used on the probe?

  A: Avoid using thread-locking compounds on probe threads as this may interfere with the electrical ground path between the probe and machine housing.