The Bently Nevada 330100-90-00, also cataloged as the 330100 3300 Proximitor Sensor, operates as a dedicated hardware component for eddy-current signal conditioning and displacement conversion within Bently Nevada 3300 proximity transducer systems. The sensor receives signals from a compatible proximity probe and extension cable assembly, then converts target movement into proportional voltage outputs for machinery vibration and shaft position monitoring.

Suffix Breakdown & Model Matrix

• 90: Total Length Option = 9.0 m (29.5 ft)

• 05: Agency Approval Option = Multiple Approvals

Hardware Specifications

Gap Voltage Validation and Signal Conditioning

The 3300 Proximitor Sensor functions as the signal-conditioning element within the 3300 transducer system. It receives high-frequency eddy-current signals from the proximity probe and converts those signals into calibrated outputs suitable for monitoring, protection, and diagnostic systems.

Proper operation requires a matched combination of probe, extension cable, and Proximitor sensor. During commissioning, gap voltage verification is commonly used to confirm correct probe positioning and transducer calibration. Accurate gap settings enable the system to generate displacement and vibration measurements within the intended operating range.

The signal-conditioning circuitry supports continuous monitoring of shaft position, radial vibration, and other rotor-related parameters without requiring physical contact with the rotating surface.

Rotor Dynamics and Cross-Talk Suppression

When integrated into a complete 3300 transducer assembly, the Proximitor Sensor supports acquisition of rotor dynamic information including shaft displacement and relative vibration measurements.

Signal integrity depends on proper grounding, shielding, and cable routing practices. Separation of transducer wiring from high-current conductors helps reduce electromagnetic interference and minimizes the potential for cross-talk between adjacent monitoring channels.

The sensor serves as the interface between the proximity transducer assembly and machinery protection or condition monitoring systems.

Frequently Asked Questions

Q: Can the Proximitor Sensor operate without a compatible proximity probe?
A: No. The sensor is designed to operate as part of a complete proximity transducer system consisting of a probe, extension cable, and Proximitor sensor.

Q: What is the primary function of the Proximitor Sensor?
A: It conditions the probe signal and converts measured target displacement into a proportional electrical output.

Q: Does the sensor directly contact the machine shaft?
A: No. Measurement is performed through a non-contact eddy-current sensing system utilizing a separate proximity probe.

Field Installation Guidelines

• Verify compatibility between the Proximitor Sensor, extension cable, and proximity probe before installation.

• Mount the sensor according to the applicable 3300 transducer system configuration requirements.

• Route transducer wiring separately from power cables and switching circuits.

• Inspect connectors and cable terminations before energizing the system.

• Apply shielding and grounding practices in accordance with plant instrumentation standards.

• Perform gap voltage validation after installation.

• Verify channel output response before placing the monitored machine into service.