Ceramic sensing boundary
The alumina cap covers the process-facing tip while allowing the electromagnetic probe field to respond to target distance.
146054Bently Nevada
sensor system
sensor system
Bently Nevada 146054-058-20-02-05 MOD:173931-011-058 Modified 3300 Ceramic Capped Proximity Probe
Alumina ceramic sensing cap2 m standard cableControlled MOD geometry
01
Product Description
The Bently Nevada 146054-058-20-02-05 MOD:173931-011-058 is a modified 3300 ceramic-capped proximity probe for non-contact measurement in aggressive chemical or high-pressure environments. Its alumina sensing cap and AISI 304 stainless-steel case form the forward process interface, while the 3/8-24 UNF body provides the documented mounting thread.
A 2 m FEP-insulated 75 Ω coaxial lead and miniature ClickLoc connector carry the probe response from 146054-058-20-02-05 MOD:173931-011-058 to the compatible 3300 extension cable and Proximitor sensor. Standard suffixes `20`, `02` and `05` define total length, connector execution and CSA/ATEX/IECEx approvals; the `058` case geometry is governed by MOD drawing 173931-011-058 because it lies outside the public standard 146054 case-length range.
02
Technical Specifications
| Technical Item | 146054-058-20-02-05 MOD:173931-011-058 |
|---|---|
| Brand | Bently Nevada |
| Product Type | Modified 3300 ceramic-capped proximity probe |
| Product Origin | USA |
| Product Family | 3300 Ceramic Capped Probe |
| Base Part Number | 146054 — 3/8-24 UNF, without armor |
| Mounting Thread | 3/8-24 UNF 2A |
| Case-length Code | 058 — geometry controlled by MOD 173931-011-058 |
| Total Length Option | 20 — 2.0 m (6.6 ft) |
| Connector / Cable Option | 02 — miniature coaxial ClickLoc connector, standard cable |
| Agency Approval Option | 05 — CSA, ATEX and IECEx |
| Modification Reference | 173931-011-058 |
| Probe Tip Material | Alumina ceramic (Al₂O₃) |
| Probe Case Material | AISI 304 stainless steel |
| Cable Construction | 75 Ω coaxial, FEP-insulated |
| Probe DC Resistance at 2 m | 7.88 ±0.50 Ω, center to outer conductor |
| Linear Range | 1.52 mm (60 mil); approximately 0.25…1.78 mm from target |
| Recommended Gap Setting | 1.0 mm (40 mil) |
| Maximum Thread Engagement | 0.563 in |
| Minimum Cable Bend Radius | 25.4 mm (1.0 in) |
| Operating / Storage Temperature | −51…+177 °C (−60…+351 °F) |
| Standard Front Seal Rating | 34 bar (500 psi) nitrogen; MOD-specific pressure details follow the controlled drawing |
03
Product Functions — Ceramic Process-facing Measurement
146054-058-20-02-05 MOD:173931-011-058 uses a ceramic front end to preserve the non-contact proximity measurement path where a standard exposed tip is unsuitable.
Shifted ceramic range
The 1.52 mm linear region begins near 0.25 mm, and the probe is electrically gapped at approximately 1.0 mm.
Matched signal chain
The passive probe connects through its cable path to the compatible extension cable and 3300 Proximitor sensor for signal conditioning.
04
Installation Highlights — MOD-controlled Forward Mount
The full 146054-058-20-02-05 MOD:173931-011-058 identity must remain attached to the installation because the modification controls geometry beyond the public standard case range.
Thread engagement control
Limit 3/8-24 engagement to 0.563 in to prevent binding of the probe case.
Ceramic-tip clearance
Gap electrically and prevent direct target contact because the ceramic cap is not designed for mechanical loading.
Rear sealing boundary
The standard front interface is pressure sealed, while rear fittings and MOD-specific construction are verified from the controlled drawing before exposure.
05
Frequently Asked Questions
Why must the full 146054-058-20-02-05 MOD:173931-011-058 identity remain together?
The public standard 146054 table ends at a 4.0 in case, so the modification drawing controls the special 058 geometry and cannot be dropped from the identity.
What cable length is built into 146054-058-20-02-05 MOD:173931-011-058?
Suffix 20 selects a 2.0 m standard 75 Ω coaxial cable.
Why can 146054-058-20-02-05 MOD:173931-011-058 contact the shaft before a normal low-OK limit?
Ceramic-capped probes have a shifted output curve, so the monitor setup and the 1.0 mm electrical gap require separate verification.
How tightly is the connector on 146054-058-20-02-05 MOD:173931-011-058 assembled?
The gold ClickLoc connector is installed finger-tight until it clicks; excessive tool torque is not required.
What prevents mounting damage to 146054-058-20-02-05 MOD:173931-011-058?
Keep 3/8-24 thread engagement within 0.563 in and maintain cable clearance and the 25.4 mm bend radius.
Does the 34 bar rating automatically define every 146054-058-20-02-05 MOD:173931-011-058 pressure condition?
No. It is the standard ceramic-capped front-seal rating; the controlled MOD drawing and actual process containment requirements govern the modified installation.
06
Modified-probe Verification
Moore Automation keeps the complete base code and modification drawing reference together during quotation, label confirmation and dispatch.
Catalog verificationThe full model and suffix stay visible.
Original productsIndustrial components are supplied with traceable identification.
One-year warrantyCoverage remains linked to the order record.
Global deliveryExport packing and tracking are coordinated.
07
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