Bently Nevada 330100-50-03 3300 Proximitor Sensor

The Bently Nevada 330100-50-03, also cataloged as the 330100-50-03 Proximitor Sensor, operates as a dedicated hardware component for signal conditioning of eddy-current proximity probes within TSI monitoring systems.

Hardware Specifications

Eddy-Current Probe Scaling and Rotor Dynamics

The 330100-50-03 is designed to linearize the output from an eddy-current probe, providing a standard output voltage proportional to the distance between the probe tip and the observed target. Accurate system configuration requires that the total length—comprising the probe, extension cable, and the 330100 Proximitor sensor—matches the calibrated 5.0 metres specification to prevent signal attenuation and phase shift. During operation, gap voltage validation at the -10 VDC target midpoint is mandatory to ensure the transducer remains within the linear region of the displacement curve, thereby providing precise data for the analysis of rotor dynamics and shaft vibration characteristics.

Frequently Asked Questions

Q: Can the 5.0 metre system be modified to a different cable length in the field?

A: No. The Proximitor sensor is factory-calibrated as a matched system. Changing the cable length alters the electrical impedance and resonant frequency, which will introduce significant measurement inaccuracies.

Q: What is the purpose of the multiple agency approval option in this unit?

A: The "03" suffix indicates compliance with specific hazardous area requirements. Ensure the installation adheres to the relevant installation drawings provided by the agency certification to maintain safety compliance.

Field Installation Guidelines

• Mounting: Secure the Proximitor sensor in a DIN-rail or bulkhead mount. Ensure the aluminum housing is effectively bonded to the instrument cabinet ground to maintain electromagnetic compatibility (EMC).
• Grounding: Ensure the common return of the power supply is referenced to the system signal ground. Use shielded twisted-pair cabling for the output signal to prevent inductive noise.
• Connections: Use high-quality coaxial connectors. Ensure that the ClickLoc connections are tightened to the specified torque to prevent intermittent signals due to vibration.
• Environmental: Although the unit is rated for -51 deg C to +100 deg C, avoid mounting the sensor in areas subject to direct thermal radiation or excessive humidity to prevent long-term connector oxidation.