Description

The Bently Nevada 330100-50-00, also cataloged as the 330100 Proximity Sensor, operates as a dedicated hardware component for non-contacting displacement and vibration measurements within 3500 and 3300 Monitoring Systems.

Hardware Specifications

ParameterSpecification
Model330100-50-00
BrandBently Nevada
OriginUSA
Weight0.32 kg
Dimensions8 mm probe diameter
Operating Temp-51 deg C to +177 deg C
Power ConsumptionDriven by external Proximitor Sensor
Thread Type3/8-24 UNF thread
Total Length5.0 metres
Connector TypeMiniature coaxial ClickLoc

Eddy-Current Probe Scaling and Gap Voltage Validation

The 330100-50-00 sensor requires verification of eddy-current probe scaling to ensure linear voltage output over the 2.0 mm (80 mil) sweep range. During mechanical installation, technicians must monitor the gap voltage validation (-10 VDC targets) using a digital multimeter connected to the Proximitor output terminals. This target corresponds to the midpoint of the linear range, calibrating the sensor against the target rotor dynamics. Proper gap setting eliminates signal saturation and optimizes cross-talk suppression between adjacent orthogonal probe configurations.

Frequently Asked Questions

Q: What is the physical significance of the -50-00 suffixes in the part number?

A: The -50 suffix specifies a total unarmored length of 5.0 metres. The -00 suffix indicates the standard fluid-resistant option without modification.

Q: Can the 330100-50-00 probe be connected directly to a 3500/42M monitor?

A: No, the proximity probe requires an intermediate 3300 XL Proximitor Sensor to convert the raw RF impedance changes into a calibrated voltage signal before entering the monitor backplane.

Field Installation Guidelines

  • Verify the target material matches the AISI 4140 steel calibration standard to avoid scale factor errors.
  • Thread the probe into the mounting bracket until the multimeter reads -10.0 VDC between the “OUT” and “COM” terminals of the Proximitor.
  • Maintain a minimum physical clearance of 30 mm between the probe tip and adjacent metal structures to prevent stray eddy-current paths.
  • Torque the locknut to 11.2 N-m (100 in-lb) maximum to lock the axial position without stripping the threads.
  • Insulate the coaxial ClickLoc connectors using self-fusing silicone tape to prevent ground loops from contacting the cable tray.

Additional information

Weight0.8 kg
Dimensions32 × 16 × 16 mm

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