Bently Nevada 330780-90-00 3300 XL 11 mm Proximitor Sensor - Image 1

Bently Nevada 330780-90-00 3300 XL 11 mm Proximitor Sensor - Image 2

Bently Nevada 330780-90-00 3300 XL 11 mm Proximitor Sensor

Technical Specifications

System Length: 9.0 m (29.5 ft) total probe + extension + Proximitor
Sensitivity: 3.94 V/mm (100 mV/mil) ±1 % from –17.5 Vdc supply
Linear Range: 0.5 mm to 11.4 mm (20 mil to 450 mil) gap
Supply Voltage: –17.5 Vdc to –26 Vdc (barrier-free); –23 Vdc to –26 Vdc (with barriers)
Supply Current: 12 mA typical, 15 mA maximum
Output Resistance: 50 Ω
Frequency Response: 0 Hz to 10 kHz (–3 dB)
Temperature Drift: <0.05 %/°C over –40 °C to +85 °C
RFI/EMI Immunity: Exceeds CE, EN 61000-4-3 level 3 (10 V/m) without extra shielding
Mounting: Compact panel-mount; DIN-rail adaptor available
Weight: 440 g
Agency Approvals: CE, ATEX, IECEx, RoHS, REACH

Category: Bentley

Description

Functional Highlights

ClickLoc Connector: Gold-plated, self-locking interface eliminates loosening under vibration; accepts probe and extension cable in seconds without tools.
Extended Linear Range: 11 mm tip diameter provides 40 % more measuring span than 8 mm systems, ideal for large axial floats and differential expansion.
Integrated Linearization: Digital mapping inside Proximitor removes traditional mid-range non-linearity, delivering ±0.2 % full-scale accuracy.
Barrier-Ready Output: Output stage designed for –24 Vdc two-wire intrinsic safety barriers; no external isolator required.
Hot-Swappable: Module can be replaced while system is powered without re-calibration when used with 3500/22M or 1701 FieldMonitor racks.
Cross-System Compatibility: Drop-in replacement for legacy 7200-series 11 mm and 14 mm systems; re-uses existing probes and cables.

Application Scenarios

Steam and gas turbine thrust-bearing wear, rotor expansion and valve position feedback
Centrifugal compressor axial position, shaft vibration and phase reference (Keyphasor)
Large boiler feed-water pump shaft run-out, seal wear and hydraulic coupling slip measurement
High-pressure reciprocating compressor piston rod drop, cross-head vibration and cylinder clearance monitoring
Offshore platform gas-lift compressor crank-shaft end-play and subsea pump motor air-gap eccentricity
Steel mill blast-furnace turbo-blower shaft vibration and hot-strip mill edger roll positioning
Nuclear reactor coolant pump shaft vibration and reactor internal component proximity surveillance
Paper machine dryer can thermal growth, calender roll float and winder mandrel position control

Ordering Information
330780-90-00 decodes as:
330780 = 3300 XL 11 mm Proximitor family
90 = 9.0 m system length, panel mount
00 = Standard approvals (no special country variants)

Installation Notes
Mount Proximitor within 9 m of probe tip; maintain –24 Vdc supply regulation better than 50 mV; ground shield at rack end only; torque ClickLoc to finger-tight plus 1/8 turn; verify 3.94 V/mm sensitivity with 25 µm (1 mil) shim stock during commissioning.

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