Description

Technical Overview

The Bently Nevada 21000-16-10-35-098-03-02 is a high-precision Proximity Probe Housing Assembly engineered for mission-critical machinery protection and condition monitoring in demanding industrial environments. Designed as part of the industry-standard 3300 XL series ecosystem, this assembly integrates seamlessly with Bently Nevada’s proximity transducers and monitoring systems to deliver reliable, non-contact displacement measurements of rotating shafts, bearings, and casings. Its robust mechanical construction ensures long-term stability under extreme thermal cycling, vibration, and electromagnetic interference—common challenges in power generation, oil & gas, petrochemical, and heavy manufacturing applications.

Manufactured to stringent ISO 9001-certified quality standards, the 21000-16-10-35-098-03-02 features a stainless steel housing with optimized thread geometry (M16 × 1.0) and integrated sealing for IP67-rated environmental protection. The unit incorporates precision-machined internal components that maintain consistent probe tip alignment and thermal expansion compensation—critical for maintaining measurement accuracy across operating temperatures from –40 °C to +125 °C. Unlike generic housings, this OEM-specified assembly preserves factory-calibrated sensitivity and linearity, eliminating field recalibration risks and ensuring compliance with API 670 (4th Edition) and ISO 10816 vibration monitoring requirements.

Detailed Specifications

• Model Number: 21000-16-10-35-098-03-02
• Brand: Bently Nevada (a Baker Hughes business)
• Type: Proximity Probe Housing Assembly
• Housing Thread: M16 × 1.0 mm (metric fine pitch)
• Overall Length: 35 mm
• Probe Tip Exposure: 10 mm (adjustable within ±0.2 mm tolerance)
• Material: AISI 316 stainless steel body; Viton® O-ring seal
• Environmental Rating: IP67 (dust-tight and water-immersion resistant up to 1 m for 30 min)
• Operating Temperature Range: –40 °C to +125 °C
• Compatible Probes: 3300 XL 8 mm and 11 mm diameter probes (e.g., 330104-00-05-05-02-00, 330180-50-05-05-02-00)

Operational Capabilities

This housing assembly enables precise, repeatable shaft position and vibration monitoring by maintaining optimal probe-to-target geometry under dynamic operating conditions. Its low thermal coefficient design minimizes drift during load ramp-up or ambient temperature shifts—ensuring continuous compliance with alarm and trip setpoints defined in plant reliability programs. The integrated locking mechanism prevents inadvertent rotation or loosening due to mechanical resonance, while the tapered seating surface guarantees consistent electrical grounding and EMI shielding. When paired with a calibrated 3300 XL proximitor, the system achieves a linear measurement range of ±2.0 mm (for 8 mm probes) with ≤±1% full-scale nonlinearity and resolution down to 0.1 µm. The assembly supports both radial and axial mounting configurations and is certified for use in SIL 2-capable safety instrumented systems (SIS) when integrated per IEC 61508 guidelines.

Technical FAQ

Q: Is the 21000-16-10-35-098-03-02 compatible with legacy 3300 series monitors?

A: Yes—it is fully backward-compatible with all 3300, 3300 XL, and 3500 monitoring systems, including older 3300/25 and 3300/50 rack-based architectures. No firmware or configuration changes are required.

Q: Can this housing be used in hazardous areas?

A: While the housing itself is not intrinsically safe, it may be deployed in Class I, Div 1/Zone 1 hazardous locations when installed with an approved barrier system (e.g., Pepperl+Fuchs KFD2-STC4-Ex1) and used with certified intrinsically safe probes and transmitters.

Q: Does it require periodic recalibration?

A: No—the housing is a passive mechanical component. Calibration is performed at the probe/transmitter level. However, we recommend verifying mechanical integrity and sealing performance during routine maintenance intervals (per API RP 581).

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