Product Brief: Bently Nevada 330180-X2-BR 181634-02 (3300 XL Proximitor with Right‑Angle BNC and Earth Ground Terminal)
The 330180-X2-BR 181634-02 is a Proximitor Sensor (driver/conditioner) for the Bently Nevada 3300 XL 8mm Proximity Probe System. This version features:
A right‑angle (90°) BNC connector (suffix X2) for probe/extension cable attachment, which reduces clearance requirements behind the Proximitor.
An integral earth ground terminal for improved grounding in electrically noisy environments.
BR certification – typically indicates INMETRO (Brazilian) approval or special coating for high‑humidity / corrosive atmospheres (e.g., offshore, tropical).
The Proximitor provides RF excitation to the 3300 XL 8mm probe, demodulates the eddy current signal, and outputs a linear DC voltage (‑0.8 VDC to ‑22 VDC) proportional to probe‑to‑target gap.
Key Features
Right‑angle (90°) BNC connector – allows mounting in shallow junction boxes.
Built‑in earth ground terminal – reduces ground loops and improves signal integrity in high‑interference environments.
BR certification – meets INMETRO (Brazil) requirements for hazardous locations (when used with IS barriers) or industrial control.
Panel or DIN rail mountable – standard 3300 XL form factor.
IP67 enclosure – dust‑tight and water‑resistant.
Wide temperature range – suitable for outdoor or high‑ambient installations.
Parameters (Table)
| Parameter | Specification |
|---|---|
| Model Series | 3300 XL (Extra Long range) |
| Part Number | 330180-X2-BR |
| Reference Number | 181634-02 (internal assembly drawing) |
| Product Type | Proximitor Sensor with right‑angle BNC + earth ground + BR cert |
| Dimensions (H x W x D) | 89 mm x 38 mm x 44 mm (3.5 in x 1.5 in x 1.73 in) – body only |
| Depth including right‑angle BNC | 64 mm (2.52 in) from mounting surface to connector end |
| Weight (approx.) | 0.23 kg (0.51 lb) |
| Mounting Type | Panel mount (screw holes) or DIN rail (adapter sold separately) |
| Connector Type | Right‑angle (90°) BNC female – accepts standard BNC male from probe/extension cable |
| Earth Ground Terminal | Integral screw terminal (accepts ring lug or spade, e.g., M4 / #8) |
| Input | 3300 XL 8mm proximity probe via BNC |
| Output Signal | -0.8 VDC to -22 VDC (linear gap voltage) |
| Output Impedance | 10 Ω nominal |
| Supply Voltage | -17.5 VDC to -26 VDC (nominal -24 VDC) |
| Supply Current | 12 mA typical (probe + Proximitor) |
| Sensitivity | 7.87 mV/µm (200 mV/mil) ±5% at 500 µm (20 mils) gap |
| Linear Range | 0.25 mm to 2.29 mm (10 mils to 90 mils) |
| Frequency Response | 0 to 10 kHz (-3 dB) |
| Ripple / Noise | < 10 mV pk‑pk (0–10 kHz) |
| Temperature Stability | < ±0.5% change in sensitivity over full range |
| Operating Temperature | -35°C to +85°C (-31°F to +185°F) |
| Storage Temperature | -51°C to +85°C (-60°F to +185°F) |
| Enclosure Rating | IP67 (with BNC cap or connected cable properly seated) |
| Certifications | CE, INMETRO (Brazil), ATEX (when used with IS barriers) |
| Cable Length to Monitor (max) | 305 m (1000 ft) |
Application Scenarios (use cases)
| Application Area | Description |
|---|---|
| Brazilian Offshore Platform (Pre‑salt) | BR certification meets INMETRO requirements for Brazilian waters; earth ground terminal improves signal in high‑EMI marine environment. |
| Onshore Refinery / Petrochemical (Brazil) | Required for new installations to comply with local NR‑10 and INMETRO standards. |
| High‑EMI Environment (VFD panels, switchgear) | Earth ground terminal provides dedicated low‑impedance path, reducing noise from variable frequency drives or radio transmitters. |
| Junction Box with Limited Depth | Right‑angle BNC allows mounting near cover or side wall where straight BNC would not fit. |
| Humid / Tropical Climates | BR variants often include conformal coating for protection against high humidity and condensation. |
| Retrofit in Crowded Panels | Right‑angle connector + earth ground simplifies wiring and grounding in existing machinery protection panels. |
| Turbine Control Retrofit (Brazilian Power Plant) | Replaces older 7200 or 3300 Proximitors while meeting current local certification requirements. |
Notes
X2 = Right‑angle BNC female. Standard straight BNC is 330180-90-XX.
BR = Brazilian (INMETRO) certification. May also include conformal coating for tropical/humid environments. Confirm with factory for exact scope (e.g., IS, non‑IS, EMC).
181634-02 is an internal Bently Nevada drawing number – not required for ordering; use 330180-X2-BR.
Earth ground terminal – connects internally to the Proximitor’s shield/common. Use this terminal to tie the BNC shield to a local earth ground (e.g., junction box ground bus) to reduce ground loop noise.
Not intrinsically safe by itself. For hazardous area (Zone 1 / Class I Div 1) installations in Brazil, refer to INMETRO‑certified IS Proximitor with external IS barriers (different part number).
DIN rail mounting clip available separately (3300 XL DIN rail adapter kit).
Compatibility – works with all 3300 XL 8mm probes (straight or right‑angle) and extension cables (BNC versions).
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7×24 hours technical consultation, from selection guidance to installation and commissioning to provide full life cycle service (paid)
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