Description

The Bently Nevada 330104-00-20-10-01-CN is a rugged, factory-armored 8 mm proximity probe from the 3300 XL series. It is precision-engineered for non-contacting shaft displacement, radial vibration monitoring, and phase reference (Keyphasor) logging on critical high-speed rotating machinery.

The 330104 series features metric M10 x 1 mounting threads and includes integrated stainless steel interlocking armor by default to protect the underlying cable assembly from harsh, abrasive industrial environments. This specific variant combines an elongated 200 mm case length with a pre-installed connector protector sleeve and country-specific agency certification approvals.

Suffix Breakdown & Model Matrix

The alphanumeric suffix combination defines the specific mechanical, electrical, and regulatory configurations of this hardware assembly:

• 330104: Base model for 3300 XL 8 mm proximity probe with M10 x 1 metric thread and integral stainless steel armor.
• 00: Unthreaded Length Option (00 = 0 mm).
• 20: Overall Case Length Option (20 = 200 mm / ~7.9 inches).
• 10: Total Length Option (10 = 1.0 meter / 3.3 feet).
• 01: Connector and Cable-Type Option (01 = Miniature coaxial ClickLoc connector with connector protector, armored standard cable).
• CN: Agency Approval Option (CN = Country Specific Approval, typically designating regional safety certifications required for hazardous industrial deployments, such as NEPSI for mainland China).

Hardware Specifications

Eddy-Current Probe Scaling & Rotor Dynamics

During operation, high-frequency RF fields generated by the Proximitor loop penetrate the target surface. Consequently, accurate calibration requires an exact eddy-current probe scaling profile that matches the metallurgy of the shaft. To establish a stable operating baseline for rotor dynamics tracking, field engineers must validate that the gap voltage achieves a target value of -10 VDC at the geometric center of the linear zone. Furthermore, tight winding geometries optimize cross-talk suppression, thereby preventing electromagnetic interference between adjacent multi-axis probes installed within the same bearing housing block.

Frequently Asked Questions

Q: What protection advantages does the -01 connector option provide on this model?

A: In the 330104 model matrix, the -01 option indicates that the probe comes pre-equipped with an external silicone connector protector sleeve. This sleeve slides completely over the ClickLoc junction to seal it against moisture, dust, and continuous oil splash inside the machine case.

Q: Can the stainless steel armor sheath be removed if space is tight?

A: No. The interlocking armor is integrated at the factory to protect the underlying miniature coaxial cable from abrasion, sharp bends, or mechanical crushing. Removing it will permanently damage internal shielding. If a non-armored probe is mandatory for your physical routing constraints, use the 330103 metric series instead.

Field Installation Guidelines

• Mechanical Clearance: Maintain a minimum counterbore clearance of 2 or more probe tip diameters (16 mm minimum) to avoid side-loading errors from surrounding metal structures.
• Torque Limits: When installing the M10 x 1 threaded case into the mounting bracket, do not exceed the maximum allowable tightening torque of 12 N·m (106 in·lb) to prevent case distortion.
• Connector Protector Deployment: Clean the gold-plated ClickLoc connector faces of any residue and twist until it clicks into place. Afterward, firmly slide the built-in protector sleeve completely over the junction to lock out environmental contaminants.
• Shielding Protocols: Leave the coaxial cable shield floating at the probe end. Instead, execute terminal grounding solely at the instrument rack or the Proximitor isolation housing ground terminal block to eliminate ground loops.