Configured for displacement measurement in mechanical monitoring platforms, the Bently Nevada 330703-000-050-10-02-05 (330703-000-050-10-02-05 Proximity Probe) provides direct physical/electrical execution of non-contacting shaft position signal conditioning.

Suffix & Model Matrix

• Model: 330703-000-050-10-02-05

• Series: 3300 XL 11 mm

• Configuration: Suffixes define probe length, mounting threads, connector type, and cable armor specifications.

Hardware Specifications

TSI Mechanical Monitoring 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 is required during installation to ensure the probe remains within its optimal linear range. The system supports advanced rotor dynamics analysis by maintaining signal integrity across the probe-to-target air gap. Cross-talk suppression is maintained through matched oscillator frequencies, which prevent signal interference in installations involving multiple adjacent proximity sensors on a single machine train.

Ordering Info

• One (1) 330703-000-050-10-02-05 Proximity Probe

• Connector protector cap

• Installation technical documentation

Field Installation Guidelines

• Mounting: Install the probe into the threaded housing; ensure the physical gap distance matches the design specification to achieve the target gap voltage.

• Cabling: Use factory-terminated coaxial cabling; ensure all connections are hand-tightened and clean to prevent signal impedance variations.

• Grounding: Secure the probe body to the machine frame to establish a consistent ground reference for the eddy-current field.

• Shielding: Route all signal cables through grounded metallic conduit to protect against electromagnetic interference in the industrial environment.

• 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 330703 probe compatible with standard 3300 XL 8 mm oscillators?

  A: No, the 11 mm probe system requires a specific 11 mm oscillator to maintain correct scaling and frequency characteristics.

• Q: How is the probe tip gap measured?

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

• Q: Can the probe cable be repaired if the insulation is damaged?

  A: Field repair of the coaxial cable is not permitted as it alters the impedance and electrical characteristics of the calibrated transducer system.

• Q: How does material type affect probe sensitivity?

  A: Probe sensitivity is calibrated for 4140 steel; different target materials will require a scaling factor adjustment to ensure accurate displacement readings.

• Q: What is the purpose of the armor on the cable?

  A: The cable armor provides mechanical protection against debris and physical damage in harsh rotating equipment environments.

• Q: Can I use this probe without an oscillator?

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

• Q: What causes erratic gap voltage readings?

  A: Erratic readings are typically caused by loose connections, electrical noise, target material irregularities, or damage to the probe tip and coaxial cable.

• Q: Should I use thread locking compound on the probe?

  A: Avoid using thread locking compounds on probe threads to prevent interference with the electrical ground path between the probe and machine housing.