Bently Nevada 330194-00-05-90-00 Proximity Probe – 3300 XL Series

Bently Nevada 330194-00-05-90-00: Extended Temperature Range Proximity Probe for Critical Rotating Machinery Protection

The Bently Nevada 330194-00-05-90-00 is a non-contact eddy-current proximity probe engineered for continuous shaft displacement and radial vibration measurement in high-temperature industrial environments. As a member of the 3300 XL Extended Temperature Range (ETR) product family, this probe addresses a specific and demanding application gap: installations where ambient temperatures at the probe body or cable routing path exceed the operational ceiling of standard 3300 XL probes. It is a direct-fit component within the Bently Nevada measurement chain — probe, extension cable, and Proximitor® driver — and is fully compliant with API Standard 670 for machinery protection systems.

Deployed across power generation turbines, refinery compressor trains, LNG expanders, and petrochemical reactor feed pumps, the 330194-00-05-90-00 provides the signal fidelity and thermal stability required for reliable machinery protection in environments where sensor failure is not an acceptable outcome. The part number suffix -00-05-90-00 encodes a 5-meter cable length, standard connector configuration (90-series), and no special options — parameters that must be matched precisely to the extension cable and driver in the measurement chain.

Real-time Stock & RFQ: [email protected] | WhatsApp: +86 18359268345

Technical Parameters

Hardware Logical Analysis

The operating principle of the 330194-00-05-90-00 is based on the eddy-current effect: a high-frequency oscillating magnetic field generated by the probe tip coil induces circulating currents in the conductive target (shaft). These eddy currents create an opposing magnetic field that loads the probe’s LC oscillator circuit. The Proximitor® driver detects the resulting change in oscillator amplitude and converts it to a DC voltage proportional to the gap between probe tip and shaft surface — with a nominal transfer function of 200 mV/mil across the linear range of 10–90 mil (0.25–2.25 mm).

The ETR designation reflects a specific hardware modification to the standard 330194 probe: the cable dielectric, insulation jacket, and internal coil potting compound are formulated for sustained operation at elevated temperatures. Standard 3300 XL probes are rated to approximately 177°C (350°F) at the probe body; ETR variants extend this envelope for installations adjacent to hot bearing housings, steam turbine casings, or high-temperature process piping where cable routing cannot avoid thermal exposure.

From an EMC perspective, the probe’s coaxial cable construction provides inherent shielding against radiated interference. The Proximitor® driver’s differential input architecture further rejects common-mode noise induced on the cable shield — a critical design feature in environments with variable-frequency drives, high-current bus bars, and switching power supplies operating in close proximity to the measurement chain. The matched impedance between probe, extension cable, and driver ensures that the calibrated sensitivity of 200 mV/mil is maintained across the full cable length without recalibration.

The 3300 XL measurement chain operates as a three-component matched system. The probe’s coil inductance, the extension cable’s characteristic impedance, and the Proximitor® driver’s oscillator frequency are factory-matched. Substituting any component from a different calibration set — even within the same model family — will shift the transfer function and introduce measurement error. The part number suffix structure (-00-05-90-00) encodes the cable length and connector type precisely to enforce this matching discipline at the procurement stage.

System Integration Benefits

• Direct API 670 Compliance: The 330194-00-05-90-00 is designed to satisfy the probe performance requirements of API Standard 670, the industry reference for machinery protection system design. This eliminates the need for additional qualification testing when specifying the probe in new or retrofit protection system designs.
• Deterministic Signal Latency: The analog output of the Proximitor® driver provides a continuous, real-time voltage signal with no digital conversion latency. The 3500 Series monitor samples this signal at rates sufficient to detect sub-synchronous vibration events and shaft centerline shifts within the monitor’s configured alarm response time — typically less than one shaft revolution at operating speed.
• Thermal Stability of Calibration: The ETR cable and potting formulation maintain the probe’s transfer function within the specified ±1% sensitivity tolerance across the extended temperature range, preventing false alarms or missed trips caused by temperature-induced sensitivity drift.
• Plug-and-Play Replacement: The 330194-00-05-90-00 is dimensionally and electrically identical to the standard 330194 series, allowing direct field replacement without modification to the probe mounting boss, conduit, or Proximitor® driver wiring. Recalibration of the measurement chain is not required provided the replacement probe is from the same calibration set.
• Diagnostic Transparency via System 1®: When integrated with Bently Nevada’s System 1® condition monitoring software, the probe’s continuous output enables full-spectrum vibration analysis, orbit plots, shaft centerline trending, and alarm history logging — providing maintenance engineers with the data density required for root-cause analysis without additional instrumentation.
• Redundant Channel Support: The 3500 Series monitor supports dual-probe configurations on a single shaft measurement plane. Two 330194-00-05-90-00 probes mounted at 90° to each other provide the orthogonal X-Y vibration data required for shaft orbit analysis and enable channel-level redundancy for SIL-rated protection loops.
• Broad Target Material Compatibility: While optimized for AISI 4140 steel shafts, the probe can be recalibrated for alternative target materials (stainless steel, titanium, Inconel) using Bently Nevada’s published correction factors, extending applicability to non-standard shaft materials in aerospace and specialty chemical applications.
• Intrinsic Safety Barrier Compatibility: The probe’s electrical characteristics are compatible with Bently Nevada’s approved Zener barrier and galvanic isolator configurations for Zone 1 and Zone 2 hazardous area installations, supporting deployment in ATEX and IECEx classified environments without modification to the probe itself.

Quality Assurance & Global Logistics

Every Bently Nevada 330194-00-05-90-00 unit supplied by siemensplc.com is sourced through verified channels with full traceability to authorized distribution or documented surplus inventory. Each unit undergoes a structured pre-shipment inspection protocol covering: visual examination of probe tip geometry and cable jacket integrity; connector condition and thread verification; label and serialization authenticity cross-check against Bently Nevada’s part number structure; and secure anti-static, moisture-resistant packaging with foam-lined transit protection.

Shipments originate from our warehouse in Xiamen, China — a major international logistics hub with direct access to DHL Express, FedEx International Priority, and UPS Worldwide Expedited services. Standard export documentation (commercial invoice, packing list, certificate of origin) is prepared for all international shipments. For destinations requiring specific import permits or CITES/dual-use export licensing, our logistics team coordinates documentation in advance to prevent customs delays. Typical transit times are 3–5 business days to Europe and North America via express courier, and 5–8 business days via standard international freight.

All supplied units carry a 12-month warranty from the date of shipment, covering manufacturing defects and verified performance deviations from published Bently Nevada specifications. Warranty claims are processed with a target response time of 48 business hours from receipt of the defective unit and supporting documentation.

Contact Information

Email: [email protected]
WhatsApp: +86 18359268345
Web: siemensplc.com
Location: Xiamen, China
© 2026 siemensplc.com. All rights reserved.