Configured for displacement and vibration measurements, the Bently Nevada 330103-00-08-10-02-00 (330103 Proximity Probe) provides direct physical/electrical execution. This non-contacting transducer measures the gap between the probe tip and a conductive target, converting shaft position changes into an electrical signal managed by a 3300 XL Proximitor Sensor. It serves as the primary inductive interface for monitoring radial vibration and axial position in rotating machinery.

Suffix Breakdown

• 330103: 3300 XL 8 mm Proximity Probe, M10 x 1 thread.

• 00: Unthreaded length option (0.0 in).

• 08: Overall case length (0.8 in).

• 10: Total cable length (1.0 meter).

• 02: Connector and cable option (Miniature coaxial ClickLoc connector with connector protector).

• 00: Agency approval option (No approvals).

Hardware Specifications

Eddy-Current Probe Scaling and Rotor Dynamics

Eddy-current probe scaling is factory-calibrated for AISI 4140 steel targets. Field deployment requires gap voltage validation (-10 VDC targets) at the Proximitor output terminal to center the probe within its linear sensing range. Accurate rotor dynamics analysis depends on this precise electrical alignment. Furthermore, maintaining cross-talk suppression by ensuring sufficient physical distance between adjacent sensors is mandatory to prevent electromagnetic interference and signal errors in multi-channel measurement setups.

Ordering Info

• 1 330103-00-08-10-02-00 Proximity Probe

• 2 M10 x 1 Hex Jam Nuts

• 1 Connector Protector

• 1 Technical Installation Document

Field Installation Guidelines

• Mechanical Installation

• Thread the probe into the mounting bracket, ensuring at least 5 full threads of engagement to provide structural stability.

• Adjust the sensor gap to reach the required -10 VDC bias voltage, then secure the jam nuts to a torque of 5.1 N-m (45 in-lb).

• Wiring and Grounding

• Route coaxial cables through dedicated grounded conduits to isolate them from high-voltage AC lines.

• Do not exceed the minimum bend radius of 25.4 mm (1.0 in) to prevent internal dielectric damage.

Frequently Asked Questions

• What is the target gap voltage for system calibration?

  The probe must be gapped until the Proximitor outputs -10 VDC, which corresponds to the linear center of the 80 mil sensing range.

• Can this probe be connected to a non-XL series Proximitor?

  No, 3300 XL probes are specifically impedance-matched to 3300 XL series Proximitor modules. Mixing series will result in measurement errors.

• Is the probe cable length modifiable in the field?

  No, the cable is an integral part of the tuned system impedance. Modifying or splicing the cable will invalidate the factory calibration and scale factor.

• How is the probe tip protected?

  The probe includes a ClickLoc connector protector to prevent contamination of the coaxial mating surfaces in industrial environments.

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

  The sensor output will reach the negative supply saturation point, potentially causing "Not OK" status in the monitoring system.

• Can the probe be used at temperatures above 177 deg C?

  No, exceeding the maximum operating temperature will cause failure of the probe's internal potting and degradation of the sensing coil.

• Does this probe support hot-swapping?

  The sensor can be physically replaced during operation, but the connected Proximitor will register a temporary channel fault alarm.

• What is the impact of magnetic materials on the probe?

  The probe is calibrated for AISI 4140 steel; using other materials will require a non-linear correction factor applied in the system monitor.