Product Core Brief
- Full Model: 330106-05-30-05-02-05
- Brand: Bently Nevada (Baker Hughes)
- Series: 3300 XL 8mm Eddy-Current Proximity Transducer System, Reverse Mount Metric Armored Series
- Complete Suffix Decode (330106-AA-BB-CC-DD-EE):
- 330106 = Base probe: M10×1 metric thread, reverse rear installation, stainless steel braided armored cable
-05= Unthreaded smooth tip segment length: 0.5 inch-30= Total stainless steel probe housing length: 30 mm-05= Factory integrated armored cable total length: 0.5 meter-02= Miniature gold-plated ClickLoc lockable coaxial connector, standard FluidLoc molded joint-05= Full global hazardous area certifications: ATEX, IECEx, CSA; SIL 2 functional safety rating
- Core Function: Back-side reverse mount armored eddy-current probe, installed from bearing housing rear counterbores to measure radial shaft vibration, axial thrust displacement, and Keyphasor rotational speed signals on gas/steam turbines, centrifugal compressors and heavy-duty fluid-film bearing machinery with abrasive cable routing environments
- Product Type: One-piece factory integrated probe + armored triaxial signal cable assembly
- Key Specs: M10×1 metric thread | 0.5m stainless steel braided armor | 7.87 V/mm (200 mV/mil) system sensitivity | FluidLoc anti-oil-wicking molding | Multi hazardous location safety approvals
- Condition: New Original (New Surplus), active OEM power generation spare, no formal obsolescence schedule
Key Technical Specifications
| Parameter | Defined Value |
|---|---|
| Mounting Thread | M10×1 metric fine thread, reverse rear installation design |
| Unthreaded Tip Length | 0.5 inch (12.7 mm) smooth PPS sensing tip segment |
| Probe Stainless Steel Case Length | 30 mm compact housing for shallow rear counterbore mounting |
| Factory Integrated Cable Length | 0.5 m total matched 50Ω triaxial armored cable |
| Cable Construction | 50Ω triaxial low capacitance 69.9 pF/m, FEP high-temperature inner jacket + AISI 304 stainless steel braided armor for abrasion resistance |
| Sealing Technology | Patented FluidLoc molded probe-cable joint, blocks turbine lube oil/process liquid wicking into internal conductors |
| Connector Hardware | Mini ClickLoc tool-free finger-lock gold-plated coaxial male connector |
| Linear Measurement Range | 0.25 mm ~ 2.3 mm full linear span; recommended installation gap 1.27 mm (50 mil) mid-range |
| Standard System Sensitivity | 7.87 V/mm (200 mV/mil) linear gap voltage output when matched with standard 3300 XL 8mm Proximitor sensor |
| Minimum Target Diameter | 15.2 mm flat metallic target; minimum recommended shaft diameter 50.8 mm |
| Operating Temperature Range | Probe tip: −52°C ~ +177°C continuous; cable: −45°C ~ +100°C continuous |
| Mechanical Bend Limits | Static cable minimum bend radius 25.4 mm; dynamic flex routing ≥50.8 mm |
| Axial Tensile Pull Strength | Max 330 N (75 lbf) without joint separation or internal wire breakage |
| Compliance & Certifications | API 670 4th Edition, CE EMC Class A, SIL 2, ATEX/IECEx Zone 2, CSA Class I Div 2 hazardous location approvals (suffix 05) |
| Compatible System Hardware | Exclusively matched with 3300 XL 8mm Proximitor signal conditioners; fully interoperable with all 3500 series TSI monitor rack modules (3500/42M, 3500/50) |
| Mechanical Feature Distinction | Stainless steel braided armored cable (suffix 05 cable code), contrast with non-armored 330103 series reverse mount probes |
Product Introduction
This M10 metric reverse mount armored proximity probe solves two core site demands: rear counterbore installation where front mounting is mechanically blocked, and harsh cabinet routing with sharp metal edges, repeated friction or heavy tensile loads that damage unarmored cables. The FluidLoc molded joint eliminates slow measurement drift caused by lubricant oil penetration into triaxial conductors, a common failure mode of generic aftermarket probes.
Suffix -05 multi-certification variant meets refinery, LNG, chemical plant global hazardous area safety standards, qualified for SIL2 safety instrumented protection loops. The unit cannot operate standalone; a complete measurement stack requires: armored reverse mount probe + optional matching armored extension cable + dedicated 3300 XL 8mm Proximitor sensor, wired to 3500 TSI monitor racks.
Critical distinction vs other reverse mount probes:
- 330105 series = 3/8-24 UNF American thread, non-armored base model
- 330103 series = M10 metric reverse mount, non-armored cable
- 330106 series = M10 metric reverse mount, factory integrated stainless steel braided armored cableAll 330103/330105/330106 series share identical 50Ω triaxial electrical matching and full interchangeability within the 8mm 3300 XL system.
Firmware/Software Versions & Upgrade Notes
This probe is a passive analog sensing assembly with no onboard firmware. System compatibility rules apply to paired Proximitor and 3500 rack monitors:Minimum compatible 3500 monitor firmware: Revision G; minimum Rack Configuration Software v2.00. All M-series monitor modules must run unified matching firmware revisions to correctly interpret the 8mm 200 mV/mil linear gap voltage characteristic curve.No probe-specific software configuration required after physical installation; only total combined length (0.5m armored probe + optional extension cable) must be entered into rack configuration software to lock transducer sensitivity calibration. Always verify total system length before commissioning to eliminate static measurement offset errors.
Frequently Asked Questions (FAQ)
- Is hot-disconnecting the probe connector safe while the 3500 rack remains energized?Proximitor and TSI rack monitors stay powered during connector removal. Unplugging this probe triggers persistent channel fault flags and full loss of vibration/thrust displacement data, but no permanent damage occurs to monitor analog input circuits. Fully re-seat the ClickLoc connector until the locking tab clicks to clear fault alarms.
- Is this part obsolescent, and are direct drop-in hardware upgrades available?This armored reverse mount probe remains an active OEM catalog spare with no formal end-of-life date. The non-certified variant 330106-05-30-05-02-00 removes ATEX/IECEx/CSA approvals; it shares identical mechanical/electrical performance but cannot be deployed in hazardous classified zones, so it is not zero-modification plug-and-play for refinery/chemical plant safety loops.
- Will transducer linearity or gap calibration data erase if the rack loses full power?All system sensitivity and total length calibration parameters store in non-volatile flash memory on the paired 3500 monitor module, not the probe assembly itself. Full rack power loss does not erase transducer configuration data; swapping this unit requires only physical reconnection with no software rework if total system length stays unchanged.
- What warranty terms separate New Surplus inventory from refurbished alternatives?New Surplus probe assemblies carry a 12-month functional warranty covering coil linearity, 50Ω triaxial impedance consistency, stainless armor structural integrity, ClickLoc connector plating integrity, FluidLoc molded seal performance, and full hazardous area certification validity. Refurbished probes typically offer only 3–6 month limited coverage and carry hidden risks of cracked PPS tip insulation, broken armor strands, worn connector locking tabs, and compromised liquid sealing that cause drifting vibration readings during turbine thermal cycles.
- Why does New Surplus pricing sit higher than generic used/refurbished marketplace listings?All New Surplus probe assemblies complete mandatory standardized QC validation: serial traceability cross-check against OEM production logs, full length impedance and capacitance bench testing, linearity sweep testing across full 2.3mm measurement range, tensile pull-load testing to validate FluidLoc joint adhesion, armor abrasion durability cycling, 1000-cycle connector lock durability testing, and sealed anti-static factory packaging with full certification documentation. Refurbished lots skip this multi-step electrical and mechanical validation workflow, introducing unplanned downtime risk for safety-critical turbine vibration and thrust position protection loops.
- Can this armored reverse mount probe mate with 11mm 330700 series Proximitor sensors?No, this 8mm probe uses 50Ω triaxial matching parameters exclusive to 3300 XL 8mm Proximitor hardware. 11mm probe systems use different capacitance matching; cross-mixing hardware breaks linearity and generates severe measurement offset errors. Verify against the OEM 3300 XL datasheet before mixing transducer hardware to avoid permanent Proximitor input circuit damage.
- Does the probe locally store vibration waveforms or long-term rotor position trending logs?No, the assembly is a fully passive analog sensing component with zero memory or signal processing hardware. All vibration amplitude, axial thrust displacement, and Keyphasor rotational speed trending records are captured and retained exclusively by the Slot1 3500/20 TDI master communication gateway module. This probe only outputs raw high-frequency eddy-current gap voltage signals without modifying or storing measurement data.
