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The Bently Nevada 330905-00-25-05-01-CN serves as the primary 330905 Proximity Sensors utilized to execute non-contact shaft vibration and dynamic displacement measurement across 3300 NSv and legacy 3300 RAM monitoring platforms. Constructed with an unarmored M10 x 1 threaded housing featuring a 0 mm unthreaded length and a 250 mm extended overall case length, the assembly interfaces via a 0.5 m protected coaxial cable terminated with a standard miniature ClickLoc probe connector and shield.

Hardware Specifications

Parameter Specification
Model 330905-00-25-05-01-CN
Brand Bently Nevada
Origin United States
Weight 0.15 kg
Dimensions M10 x 1 thread profile (250 mm overall case length)
Operating Temp -34 deg C to +177 deg C (-30 deg F to +351 deg F)
Power Consumption Passive transducer (Powered via Proximitor Sensor)
Probe Type 3300 NSv probe, M10 x 1 thread, without armor
Cable Length 0.5 m (20 in) protected coaxial cable
Connector Type Standard NSv probe connector with protective shield
Design Feature Narrow-side-view profile for constrained target areas

Mechanical Monitoring & TSI Performance

The 330905-00-25-05-01-CN probe utilizes narrow-side-view eddy-current probe scaling to monitor complex rotor dynamics in tight counterbores or small-diameter shafts where side-clearance is severely restricted. When coupled with a compatible 3300 NSv Proximitor Sensor, the coil generates a linear voltage output directly proportional to the physical gap distance. Performing gap voltage validation to achieve a target reading of -10 VDC during installation ensures the transducer operates at the center of its linear span, preventing measurement error from adjacent metallic surfaces through enhanced cross-talk suppression.

Frequently Asked Questions

Q: What gap voltage level validates proper baseline mechanical installation of the 330905 probe?

A: Adjust insertion depth until the output voltage measured from the connected 3300 NSv Proximitor Sensor reads -10 VDC, centering the probe in its linear operating zone.

Q: Can the 0.5 m probe cable connect directly to system rack terminal strips?

A: No. The integrated 0.5 m protected coaxial cable must connect to a matching 3300 NSv extension cable to complete the 5.0 m or 7.0 m tuned system loop length required by the Proximitor Sensor.

Q: What is the technical advantage of the narrow-side-view design on this probe model?

A: The narrow-side-view design restricts the emitted high-frequency magnetic field footprint, minimizing side-wall interference when mounted in narrow keyways, tight counterbores, or small machine casings.

Field Installation Guidelines

  1. Thread the M10 x 1 casing into the mounting hole by hand to ensure correct thread engagement before applying installation torque.
  2. Maintain at least 5 full threads of engagement to ensure rigid mounting stability against ongoing operational machine vibration.
  3. Route the 0.5 m protected coaxial cable along rigid conduits, keeping clear of sharp internal housing corners and high-voltage AC lines.
  4. Inspect and clean the ClickLoc miniature coaxial connector terminals before engaging and locking the protective shield assembly.

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