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Configured for precision vibration sensing in mechanical monitoring networks, the Bently Nevada 330101-00-12-10-02-00 (330101 Proximity Probe) provides direct electrical translation of shaft displacement for integration with machine protection platforms.

Suffix Breakdown & Model Matrix

Suffix Description
330101 Base Model: 3300 XL 8 mm Proximity Probe
00 Unthreaded Length: 0.0 in
12 Overall Case Length: 1.2 in
10 Total Length: 1.0 m (3.3 ft)
02 Connector: Miniature coaxial ClickLoc connector, standard cable
00 Agency Approval: Not required

Hardware Specifications

Parameter Specification
Model 330101-00-12-10-02-00
Brand Bently Nevada
Origin USA
Weight 0.323 kg
Dimensions 1.2 in case length, 1.0 m cable
Operating Temp -51 deg C to +177 deg C
Power Consumption N/A (Passive transducer)
Mounting Thread 3/8-24 UNF

Eddy-Current Probe Scaling and Rotor Dynamics

The 330101 probe utilizes eddy-current sensing to generate a displacement signal proportional to the gap between the probe tip and the metallic target. Accuracy in rotor dynamics monitoring requires the system to adhere to a calibrated eddy-current probe scaling of 7.87 V/mm. During the mechanical commissioning phase, technicians must conduct gap voltage validation to ensure the transducer operates at a target of -10 VDC when the machine is at steady-state.

Proper alignment is mandatory to maintain signal linearity; operation outside the intended gap range results in waveform distortion and incorrect vibration data. To ensure signal integrity, cross-talk suppression must be maintained by ensuring the probe cable is shielded and isolated from high-voltage AC paths.

Frequently Asked Questions

Q: Is the 1.0 m cable length field-modifiable?

A: No. The system calibration is tied to the total cable length, which includes the probe and extension cable assembly. Modifying the cable length alters the impedance of the signal loop, which prevents proper function with the 3300 XL monitoring system.

Q: What is the purpose of the 1.2 in case length?

A: The case length is dictated by the mounting requirements of the machine case. It provides the necessary depth for the probe to be correctly positioned relative to the target while ensuring the mounting thread remains secure within the machine port.

Field Installation Guidelines

  1. Clean all threads prior to installation to ensure a reliable electrical and mechanical path between the probe case and the machine mounting bracket.
  2. Hand-tighten the probe until the tip contacts the target, then back off to the required gap distance, confirmed by DC voltage output at the monitoring terminal.
  3. Lock the probe in place using the included jam nut to prevent drift or mechanical loosening caused by machine vibration.
  4. Route the cable through grounded metallic conduit, keeping it separated from power lines to avoid induced noise or cross-talk within the vibration signal.

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