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Configured for vibration and displacement monitoring in 3300 XL Transducer System platforms, the Bently Nevada 330102-00-20-10-02-00 (330102 Proximity Probe) provides direct physical/electrical execution. The instrument transforms physical proximity gaps between the sensor face and a conductive target into a precise high-frequency radio frequency modulation loop without mechanical contact.

Suffix Breakdown & Model Matrix

  • 330102: Base component designator for 3300 XL 8 mm proximity probe utilizing a 3/8-24 UNF thread and integrated stainless steel armor.
  • -00: Unthreaded length option defining 0.0 inches of exposed smooth barrel.
  • -20: Overall case length option defining 2.0 inches of total threaded housing length.
  • -10: Total length option dictating a 1.0 metre (3.3 feet) integrated cable path.
  • -02: Miniature coaxial ClickLoc connector matched with standard electrical cable.
  • -00: Agency approval option indicating no hazardous area certifications are required for the installation point.

Hardware Specifications

Parameter Specification
Model 330102-00-20-10-02-00
Brand Bently Nevada
Origin USA
Weight 0.323 kg
Dimensions 8 mm probe tip diameter, 2.0 inches overall case length, 3/8-24 UNF thread
Operating Temp -51 deg C to +177 deg C
Power Consumption Passive component powered via external Proximitor Sensor excitation
Probe Tip Material Polyphenylene sulfide (PPS)
Probe Case Material AISI 303 or 304 stainless steel (SST)
Cable Assembly Armored standard cable with coaxial core
Connector Type ClickLoc miniature coaxial connector

Mechanical Monitoring & TSI Technical Attributes

The physical measurement mechanism functions via specialized eddy-current probe scaling tuned precisely against an AISI 4140 steel target surface. To verify baseline measurement linear accuracy, field engineers must perform an explicit gap voltage validation targeting a nominal -10 VDC baseline at the physical mid-point of the system's linear range. Correct installation positioning ensures accurate monitoring of high-frequency shaft behavior and complex rotor dynamics. Additionally, the integrated stainless steel armor sheath provides natural attenuation characteristics that optimize cross-talk suppression when multiple signal cables occupy shared terminal junction enclosures.

Frequently Asked Questions

Q: What physical handling limit prevents signal degradation at the miniature coaxial interface?

A: The ClickLoc coaxial connector must never be turned or pulled using pliers or standard mechanical clamping tools. Excessive force deforms the internal gold-plated pin, resulting in permanent shifts in loop impedance and calibration drift.

Q: How does the integrated armor affect the routing properties of the 1.0 metre cable?

A: The flexible stainless steel armor provides mechanical protection against sharp edges but enforces a strict minimum bend radius limitation of 25.4 mm. Exceeding this bend threshold can crimp the internal coaxial dielectric.

Q: Is a standalone probe capable of transmitting a standard 4-20 mA process signal?

A: No. The probe acts purely as a variable inductive element. It must connect directly to a matched 3300 XL Proximitor Sensor to convert the raw RF modulation into a standard linear 200 mV/mil output.

Field Installation Guidelines

  1. Inspect the 3/8-24 UNF mounting hole to ensure it is tapped straight, free of burrs, and clear of metallic chips or cutting oil.
  2. Thread the probe body into the mounting bracket or machine housing manually to eliminate any potential for cross-threading.
  3. Hook a calibrated digital multimeter to the proximal terminal block of the Proximitor Sensor to capture the active DC output.
  4. Advance or retract the probe housing inside the mounting block until the gap voltage validation matches the baseline of -10 VDC.
  5. Torque the structural locknut tightly against the mounting frame to preserve the verified air gap, then secure the ClickLoc connector using self-fusing insulation wrap to shield the junction from structural earth loops.

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