Description
Bently Nevada 330190‑085‑00‑05 3300‑XL ETR Extended‑Temperature‑Range Tri‑axial Extension Cable (Dual‑End Right‑Angle Microdot, Hazardous‑Area Approved)
Product Overview
The 330190‑085‑00‑05 is factory‑calibrated non‑armored ETR (Extended Temperature Range) tri‑axial extension cable for legacy 3300‑XL 8 mm Microdot proximity transducer systems. It is built for high‑temperature machinery environments, fitted with dual‑end right‑angle Microdot 10‑32 coaxial connectors for confined installation space. This cable transfers high‑frequency eddy‑current signals between Microdot‑type proximity probes and proximitor hardware for shaft‑relative radial‑vibration, thrust‑position and Keyphasor phase‑reference measurement, complying with API‑670 turbomachinery protection requirements. Final suffix ‑05 delivers multi‑agency ATEX / IECEx / CSA intrinsic‑safety hazardous‑area approvals.
Critical Compatibility Warning
- Exclusively for 3300‑XL Microdot transducer family. NOT compatible with NSv ClickLoc (330930 series) or standard‑grade 330130‑series tri‑axial cables electrical interchange. Only mate with ETR‑qualified Microdot proximity probes and ETR‑compatible proximitor units.
- Total calibrated transducer system length = probe integral pigtail length + this ETR extension cable (8.5 m). The total length must strictly match the calibrated length setting of paired proximitor. Length mismatch will cause scale‑factor deviation and measurement inaccuracy.
- Both connectors are right‑angle Microdot 10‑32. Do not splice, cut or modify factory‑molded cable assembly. Always verify intrinsic‑safety marking on physical label before hazardous‑zone deployment.
Part Number Decoding
- 330190:3300‑XL ETR high‑temperature tri‑axial extension‑cable base series
- ‑085:Nominal cable length = 8.5 meters (27.9 ft)
- ‑00:Non‑armored cable construction
- ‑05:Right‑angle Microdot 10‑32 connectors at both ends + ATEX/IECEx/CSA multi‑hazardous‑area certifications

330190-085-00-05
Key Specifications
| Parameter | Value |
|---|---|
| Part Number | 330190‑085‑00‑05 |
| Series | 3300‑XL 8 mm ETR Microdot Proximity Transducer System |
| Cable Construction | Non‑armored 75 Ω tri‑axial, high‑temp FEP insulation |
| Nominal Length | 8.5 m |
| Connector Type | Right‑angle Microdot 10‑32 coaxial (both ends) |
| Characteristic Impedance | 75 Ω |
| Capacitance | 69.9 pF/m typical |
| Operating Temperature Range | ‑52 °C ~ +177 °C (ETR high‑temperature rating) |
| Minimum Static Bending Radius | 50 mm; avoid sharp kinks especially near right‑angle connector housings |
| Outer Jacket Material | High‑temperature FEP fluoropolymer, oil‑mist & chemical resistant |
| Shielding | Triple‑layer tri‑axial shielding for heavy‑duty EMI/RFI noise suppression |
| Certifications | API‑670 compliant; ATEX, IECEx, CSA intrinsic‑safety approvals |
| Country of Origin | USA |
| Weight | ≈0.323 kg |
Main Features
- Dual‑end right‑angle Microdot 10‑32 connectors: Solves tight‑clearance cabinet / junction‑box / machine‑case installation, eliminates mechanical interference for straight‑style connectors.
- 8.5‑meter non‑armored ETR high‑temperature tri‑axial construction: Optimized for locations exposed to continuous high equipment radiant heat, where standard‑grade cables cannot satisfy thermal requirements.
- Tri‑axial triple‑shielded structure: Superior noise immunity against VFD, contactor and high‑power AC field interference, preserves eddy‑current signal fidelity under harsh plant electromagnetic environment.
- High‑temperature FEP fluoropolymer insulation: Resists turbine oil‑mist, chemical contamination and extreme wide industrial temperature swing.
- Factory‑molded right‑angle Microdot assemblies: Consistent impedance and capacitance performance, anti‑vibration for continuous long‑term turbomachinery service.
- Multi‑agency hazardous‑area intrinsic‑safety certifications (‑05 suffix): Qualified for petrochemical, refinery and oil‑gas classified explosive‑zone deployment.
- Full interoperability inside 3300‑XL ETR Microdot transducer ecosystem; API‑670 compliance for turbomachinery protection loops.
Typical Application Scenarios
- High‑temperature‑zone signal extension for 3300‑XL ETR Microdot‑interface 8 mm proximity probes (e.g.129716‑173‑037‑15‑05), with limited installation clearance for straight Microdot connectors
- Radial shaft‑relative vibration monitoring, axial thrust‑position protection and Keyphasor phase‑reference signal transmission on high‑heat steam turbines, gas turbines and centrifugal compressors
- Refinery, petrochemical and power‑plant sites requiring both high‑temperature cable rating and ATEX / IECEx hazardous‑area certifications
- New‑project integration with Bently Nevada 3500 rack Microdot‑compatible ETR‑qualified proximitor channels
- Overhaul spare‑part replacement for existing high‑temperature right‑angle Microdot transducer measurement loops
Related & Recommended Alternative Models
| Model | Description |
|---|---|
| 330190‑085‑00‑00 | 8.5 m non‑armored ETR extension cable, straight Microdot both ends, no hazardous‑area approvals |
| 330190‑085‑01‑05 | 8.5 m armored ETR extension cable, dual‑end right‑angle Microdot, multi‑hazardous‑area approvals |
| 330190‑075‑00‑05 | 7.5 m non‑armored ETR, dual‑end right‑angle Microdot variant |
| 330130‑085‑00‑05 | 8.5 m standard‑grade non‑ETR tri‑axial cable, right‑angle Microdot (lower temperature rating) |
| 330930‑085‑00‑RU | 8.5 m NSv ClickLoc extension cable (incompatible, reference‑only comparison) |
Compatible Components & Accessories
- Proximity Probes: 129716‑xx‑xx‑xx‑05 and other 3300‑XL ETR‑qualified Microdot‑interface proximity probes
- Monitoring Hardware: ETR‑compatible 330180‑xx‑00 proximitor modules, Bently Nevada 3500 rack Microdot‑compatible monitor channels
- Mechanical Accessories: 43501‑02‑04‑02 low‑pressure cable‑seal assembly, 43574‑04 multi‑hole grommet
- Installation Consumables: Cable clamps for strain‑relief, high‑temperature cable ties
- Tooling: Specified‑torque Microdot connector tightening tool
- Calibration Tool: 8 mm 3300‑XL Microdot static gap calibration fixture
Installation and Configuration Guide
Warning: Installation must be performed by qualified instrument technicians. Always refer to original Bently Nevada 3300‑XL ETR transducer‑system manual as primary reference. Verify intrinsic‑safety marking before deployment in explosive classified hazardous zones.
- Pre‑installation Total‑Length Calculation
- Calculate total transducer length = probe integral pigtail length + 8.5 m of this ETR extension cable.
- Confirm total length strictly matches calibrated‑length requirement of paired ETR‑qualified proximitor. Length mismatch causes scale‑factor error.
- Cable Routing Requirements
- Route ETR tri‑axial cable separately from high‑power AC, VFD and contactor wiring to minimize EMI noise.
- Maintain minimum static bending radius ≥50 mm. Avoid sharp bends especially near right‑angle connector housings. Do not pull cable assembly by Microdot connector body.
- Arrange cable routing to take full advantage of ETR high‑temperature rating; avoid unnecessary mixing‑routing with standard‑grade non‑ETR cables on hot equipment sections. Where cable penetrates machine casing, install approved cable‑seal fitting.
- Right‑Angle Microdot Connector Mating Procedure
- Clean Microdot contact pins before mating. Align pin‑keyway correctly, tighten to manufacturer‑specified torque value. Do not over‑torque right‑angle connector housing.
- Mount strain‑relief clamps within short distance of each right‑angle connector, to eliminate mechanical bending stress transferred onto connector joints.
- System Commissioning
- Complete full transducer‑loop assembly and power‑up proximitor / monitoring rack.
- Read static gap voltage to verify probe mechanical gap setting. Perform static‑gap calibration test with 8 mm Microdot calibration fixture to validate system scale‑factor.
- Confirm Not‑OK fault status clears after proper installation and gap adjustment. Configure alarm / trip thresholds per project machinery specification.
- Maintenance & Troubleshooting
- During machinery turnaround, inspect right‑angle Microdot connectors for oil contamination and corrosion; check high‑temperature FEP jacket for cracking, embrittlement or oil‑swelling.
- Gap‑voltage drift, high noise level or persistent Not‑OK faults may result from loose Microdot joint, mechanical gap shift, cable thermal ageing damage or incorrect total transducer‑loop length.
- Replace complete factory ETR cable assembly upon damage; field splicing or repairing tri‑axial ETR cable is strictly prohibited.
Supplementary Remark
330190‑085‑00‑05 is an 8.5‑meter non‑armored ETR high‑temperature tri‑axial extension cable for 3300‑XL Microdot proximity transducer systems, equipped with dual‑end right‑angle Microdot‑10‑32 connectors, ATEX/IECEx/CSA multi‑hazardous‑area intrinsic‑safety certifications for high‑temperature turbomachinery measurement loops. It must not be electrically substituted with standard‑grade 330130‑series cables for hot‑side runs and is incompatible with NSv ClickLoc hardware. Before commissioning, cross‑check ETR‑cable requirement, total transducer‑loop length, right‑angle connector style and hazardous‑area approval against project BOM and mechanical drawings.
