Configured for displacement and vibration measurements in machinery protection systems, the Bently Nevada 330103-00-10-05-01-00 (330103 Proximity Probe) provides direct physical/electrical execution. This non-contacting sensor transduces the dynamic gap between the probe tip and a conductive target into an electrical signal managed by a 3300 XL Proximitor Sensor. The assembly serves as the primary inductive interface for monitoring shaft axial position and radial vibration in rotating machinery.

Suffix Breakdown

• 330103: 3300 XL 8 mm Proximity Probe, M10 x 1 thread, without armor.

• 00: Unthreaded length option (0.0 in).

• 10: Overall case length option (1.0 in).

• 05: Total length option (0.5 m / 1.6 ft).

• 01: Connector and cable option (Miniature coaxial ClickLoc connector).

• 00: Agency approval option (No approvals required).

Hardware Specifications

Eddy-Current Probe Scaling and Rotor Dynamics

The 8 mm eddy-current probe scaling is factory-calibrated for AISI 4140 steel targets. Successful field deployment requires gap voltage validation (-10 VDC targets) at the Proximitor output terminal to center the probe within its linear sensing envelope. This precise physical alignment facilitates accurate rotor dynamics analysis, including detection of fluid-film bearing instabilities. Cross-talk suppression is maintained by ensuring adequate physical separation between adjacent probe tips, preventing electromagnetic interference between parallel measurement channels.

Ordering Info

• 1 330103-00-10-05-01-00 Proximity Probe with 0.5 m integrated coaxial lead wire

• 2 M10 x 1 Hex Jam Nuts

• 1 ClickLoc Connector Protector Cap

• 1 Installation Technical Document

Field Installation Guidelines

• Mechanical Threading and Torque

• Install the probe into the mounting bracket with a minimum of 5 full threads of engagement to ensure rigid mechanical positioning.

• Adjust the sensor gap until the target voltage is reached, then tighten the locknuts to a terminal torque of 5.1 N-m (45 in-lb).

• Cable Routing and Shielding

• Enforce a 25.4 mm (1.0 in) minimum bend radius for the coaxial cable to avoid damaging the internal core.

• Route probe leads within dedicated, grounded metal conduits to provide isolation from AC lines and mitigate EMI-induced signal errors.

Frequently Asked Questions

• What baseline gap voltage must be maintained for calibration?

  The probe must be physically gapped until the Proximitor output registers -10 VDC, which corresponds to the linear center of the 80 mil measurement range.

• Can this probe be connected directly to a PLC or DCS I/O card?

  No, this is a passive sensor and requires a 3300 XL Proximitor module to convert impedance changes into a scaled -24 VDC output or current signal.

• Is the 0.5 m cable length modifiable in the field?

  No, the cable length is an integral part of the system impedance. Cutting or splicing will corrupt the scale factor and invalidate system accuracy.

• What is the factory-calibrated target material?

  The system is calibrated for AISI 4140 steel. Monitoring different shaft materials will require a non-linear calibration or system recalibration.

• Is the ClickLoc connection hot-swappable?

  Yes, the coaxial interface can be disconnected or connected while the system is powered, though a temporary channel fault alarm will occur.

• Does this model include outer protective armor?

  No, the 330103-00-10-05-01-00 part number utilizes standard coaxial cabling without stainless steel armor protection.

• How does humidity impact the coaxial junction?

  Moisture creates parallel leakage paths that skew signal output. Use the provided connector protector or self-fusing silicone tape in humid environments.

• What happens if the probe tip is installed too close to the target?

  The probe will enter the non-linear region or physical contact may occur, resulting in measurement saturation or mechanical damage to the probe tip.