Configured for non-contacting displacement measurement in machinery condition monitoring platforms, the Bently Nevada 33101-00-22-10-02-05 (33101 11 mm Proximity Transducer) provides direct physical-to-electrical execution by converting the proximity gap into relative voltage changes.

Options and Part Number Structure

• 33101: Base product catalog code for the 3300 XL 11 mm proximity probe.
• 00: Unthreaded length option.
• 22: Overall case length option configured for 22 feet of total system length.
• 10: Thread size configuration defining a 3/8-24 UNF-2A mechanical interface.
• 02: Hardware adjustment option indicating standard configuration.
• 05: Agency approval option selecting integrated CSA, ATEX, and IECEx certifications for explosion-proof installations.

Hardware Specifications

Eddy-Current Probe Scaling and Rotor Dynamics

The 3300 XL 11 mm transducer utilizes eddy-current probe scaling to monitor massive industrial rotor dynamics. Operating on high-frequency RF fields, the probe tip measures the distance to a conductive target without physical contact. Field setup routines rely on gap voltage validation (-10 VDC targets) benchmarks to anchor the operational midpoint within the 4.0 mm linear tracking envelope. The system incorporates passive cross-talk suppression to isolate nearby sensors, allowing precise radial vibration and axial position measurement on high-speed fluid-film bearing machinery.

Ordering Info

• 1 x 33101-00-22-10-02-05 11 mm Proximity Transducer Probe
• 1 x Integrated Coaxial Connector Protective Cap

Field Installation Guidelines

Mechanical Mounting and Case Torque

• Thread the probe body into the machine casing using the 3/8-24 UNF-2A threads, avoiding tight kinks in the integrated 22-foot cable lead.
• Apply a maximum mounting torque of 11.3 N-m (100 in-lb) to the locknuts to prevent stripping or mechanical strain on the internal transducer elements.

Signal Integrity and Connector Insulation

• Ensure the coaxial ClickLoc connectors are clear of oil and grease before snapping them together with the extension cable.
• Wrap the field connection point with silicone self-fusing tape or install a dedicated connector sleeve to prevent grounding faults caused by contact with the junction box wall.

Technical Clarifications

• How is the baseline gap voltage validation (-10 VDC target) verified during physical installation?

  Technicians adjust the probe depth while tracking the DC voltage at the Proximitor output until it measures -10 VDC, indicating the absolute center of the linear calibration scale.

• What operational risk occurs if the transducer cable exceeds the specified bend radius?

  Bending sharper than a 25.4 mm (1.0 inch) radius introduces structural impedance anomalies in the coaxial line, causing calibration drift and signal noise.

• Does this probe support direct hot-swap extraction from an active monitoring loop?

  Yes, the sensor can be physically uninstalled while active, but monitoring channels must be bypassed beforehand to prevent triggering false trip sequences on the machinery safety monitors.

• What physical symptoms indicate a loss of cross-talk suppression between two adjacent probes?

  Probes mounted closer than 40 mm apart without isolation generate a high-frequency beating interference, which skews dynamic vibration readings.

• Can the 11 mm probe tip withstand constant submersion in industrial lubricating oil?

  Yes, the polyphenylene sulfide (PPS) tip material provides an absolute chemical barrier against petroleum-based lubricants and synthetic compressor fluids.

• How does extreme temperature cycling down to -51 deg C affect the scale factor stability?

  The internal compensation loop keeps scale factor variances below 10% across the full temperature range, guaranteeing stable performance in unheated outdoor stations.

• What problem occurs if the probe faces a non-ferrous target like aluminum instead of 4140 steel?

  Non-magnetic targets alter the eddy-current probe scaling, resulting in a compressed linear envelope and a severe drop in nominal output voltage.

• Why must the probe case be electrically isolated from the instrument rack ground plane?

  Isolating the case prevents stray industrial ground loops from flowing through the sensitive coaxial shield line, ensuring clean signal transmission.