Bently Nevada 21000-16-10-00-113-03-02 Proximity Probe Housing Assembly – 21000 Series

Bently Nevada 21000-16-10-00-113-03-02 – 16 mm Eddy-Current Proximity Probe Housing Assembly for Rotating Machinery Protection

The Bently Nevada 21000-16-10-00-113-03-02 is a 16 mm eddy-current proximity probe housing assembly engineered for continuous, non-contact measurement of shaft radial vibration and axial position in critical rotating machinery. Belonging to the Bently Nevada 21000 Series — one of the most widely deployed proximity transducer families in the power generation, oil & gas, and petrochemical industries — this unit delivers factory-calibrated output with a nominal sensitivity of 200 mV/mil (7.87 V/mm), eliminating the need for field calibration upon installation.

The part number encodes the full mechanical and electrical configuration: 16 mm probe tip diameter, 10 ft integral cable, no armored jacket, standard 113-series connector, standard temperature rating (03), and CE/standard approval code (02). This deterministic part-number architecture allows engineers to specify exact replacement units without ambiguity, a critical requirement in API 670-governed machinery protection systems where substitution errors carry operational risk.

At siemensplc.com, we maintain verified stock of genuine Bently Nevada components and ship globally from Xiamen, China. Our technical team provides pre-sale compatibility assessments, gap voltage verification guidance, and post-sale integration support for 3500 Series, 3300 Series, and ADAPT 3701 monitoring platforms.

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

Technical Parameters

Hardware Logical Analysis

The 21000-16-10-00-113-03-02 operates on the principle of electromagnetic induction: a high-frequency oscillator (typically 1.0–1.5 MHz) drives a coil wound within the probe tip, generating an alternating magnetic field. When a conductive target surface — the shaft — enters the field, eddy currents are induced, loading the oscillator circuit and producing a proportional change in output voltage. The 16 mm tip diameter provides a larger sensing coil area compared to 8 mm variants, yielding a wider linear range (10–90 mil vs. 10–50 mil for 8 mm probes) and improved signal-to-noise ratio in environments with high electromagnetic interference.

The integral 10 ft cable is a critical design element: the cable’s distributed capacitance and inductance are factory-matched to the probe coil and the designated Proximitor driver (e.g., 3300 XL or 3500/42M). Substituting a cable of different length or impedance without recalibration will shift the linear range and introduce sensitivity error — a failure mode that the integral cable design eliminates by making the probe-cable assembly a single, calibrated unit.

EMC performance is achieved through coaxial cable shielding with drain wire grounding at the driver end only (single-point ground), preventing ground loop currents that would appear as low-frequency noise on the vibration signal. The stainless steel housing provides additional shielding against radiated RF interference common in motor control centers and variable-frequency drive environments. The probe tip’s ceramic-filled epoxy potting compound provides both dielectric isolation and mechanical protection against process fluid ingress, maintaining calibration stability across the full –35°C to +177°C thermal envelope.

The 113-series connector configuration uses a locking bayonet mechanism with gold-plated contacts, rated for 500+ mating cycles. Contact resistance below 10 mΩ ensures that connector-induced signal attenuation remains below the measurement noise floor of the 3500 Series monitor (typically <0.1 mV RMS).

System Integration Benefits

• Direct API 670 compliance: The 21000 Series is explicitly listed in API 670 (5th Edition) as a qualified proximity transducer system, eliminating the engineering review burden required for non-listed alternatives in new installations and insurance-governed facilities.
• Deterministic real-time response: Output bandwidth extends to 10 kHz, sufficient to capture sub-synchronous instability events (oil whirl, oil whip) and high-frequency blade-pass frequencies in centrifugal compressors without aliasing artifacts.
• Zero-maintenance sensing: Non-contact measurement eliminates wear mechanisms present in contacting displacement sensors, sustaining calibration accuracy over multi-year continuous operation between planned turnarounds.
• Plug-and-play replacement architecture: The 21000 Series maintains backward electrical compatibility with 3300 Series Proximitor drivers, allowing direct field replacement without driver substitution or system reconfiguration in legacy installations.
• Diagnostic transparency: The –24 VDC supply current draw of the probe-cable assembly is monitorable at the Proximitor driver; an out-of-range current indicates cable damage or probe coil failure, enabling predictive maintenance before measurement integrity is compromised.
• Thermal stability: Sensitivity drift across the full operating temperature range is specified at ±0.5% of full scale, ensuring that alarm and trip setpoints established at ambient temperature remain valid at process operating temperatures up to 177°C.
• Multi-axis deployment: The 16 mm form factor accommodates both radial (X-Y) and axial (thrust) probe installations within standard API 670 probe bracket geometries, reducing the number of distinct part numbers required in a machinery protection bill of materials.
• Software ecosystem integration: Output is directly compatible with GE/Baker Hughes System 1 condition monitoring software for trend analysis, alarm management, and machinery health dashboards without signal conditioning adapters.

Quality Assurance & Global Logistics

Every Bently Nevada 21000-16-10-00-113-03-02 unit supplied by siemensplc.com is sourced through verified distribution channels and undergoes a pre-shipment inspection protocol covering physical integrity, connector condition, cable continuity, and documentation completeness. Certificate of Conformance (CoC) and original factory datasheet are included with each shipment; calibration test reports are available upon request.

Our warehouse is located in Xiamen, China — a major international logistics hub with direct access to Xiamen Gaoqi International Airport and Xiamen Port. Standard export shipments are dispatched within 1–3 business days of order confirmation. Typical transit times: 3–5 days to Southeast Asia, 5–7 days to the Middle East and Europe, 7–10 days to North America. DHL Express, FedEx International Priority, and sea freight consolidation are all available. All shipments include commercial invoice, packing list, and HS code documentation (HS 9031.80) for smooth customs clearance.

For time-critical MRO requirements, we offer same-day dispatch on confirmed in-stock units with DHL Express. Bulk orders for EPC contractors and OEM integrators are handled with dedicated account management, including vendor-managed inventory arrangements for high-velocity SKUs.

Contact Information

Email: [email protected]
WhatsApp: +86 18359268345
Web: siemensplc.com
Location: Xiamen, China
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