Description

Bently Nevada 330850-51-05 3300 XL 25 mm Proximitor Sensor

Configured for eddy-current displacement signal conditioning in 3300 XL machinery monitoring networks, the Bently Nevada 330850-51-05 (3300 XL 25 mm Proximitor Sensor) provides direct physical/electrical execution. The module processes non-contact probe signals for shaft vibration and position measurement using calibrated scaling and gap voltage validation aligned with proximity transducer chain behavior. It is designed as an interface element between extension cable/probe assemblies and monitoring electronics.

Suffix Breakdown & Model Matrix

• 330850: Proximitor Sensor base platform for 3300 XL 25 mm system
• 51: DIN rail mounting and system length configuration option
• 05: Multiple agency approval configuration variant
• 5.0 metres (16.4 feet): System length definition for probe + extension assembly integration

Hardware Specifications

Parameter	Specification
ModelBrand	Bently Nevada 330850-51-05
Origin	USA
Weight	0.2 kg
Dimensions	8.8 x 3.5 x 7 cm (estimated shipping size)
OperatingTemp	Not specified
PowerConsumption	Not specified
Core Function	Eddy-current probe signal conditioning
System Length	5.0 m (16.4 ft)
Input Type	3300 XL 25 mm non-contacting proximity probe + extension cable
Output Resistance	50 Ohm
Average Scale Factor	0.787 V/mm (20 mV/mil) nominal

Eddy-Current Probe Scaling and Gap Voltage Validation Architecture

The 3300 XL 25 mm Proximitor Sensor implements eddy-current transducer interface conditioning with calibrated transfer characteristics for gap displacement conversion. The signal path maintains scaling linearity through defined probe-to-surface spacing response, supporting gap voltage validation targeting negative DC bias regions typical of proximity probe systems. Cross-talk suppression is achieved through controlled impedance matching and shielding integrity across extension cable interfaces, minimizing signal distortion under multi-channel vibration monitoring topologies.

Frequently Asked Questions

Q1: Can the 330850-51-05 be hot-swapped during active monitoring operation?
A: Hot-swap capability depends on system backplane implementation. The sensor itself does not provide internal hot-swap isolation; removal during energized probe operation may interrupt bias voltage continuity.

Q2: What is the electrical interface limitation for probe cable length?
A: The system is defined for a 5.0 m total probe + extension cable length. Exceeding configured length may alter scaling accuracy and reduce gap voltage linearity.

Q3: Does the output resistance affect signal conditioning accuracy?
A: The 50 Ohm output resistance is part of the conditioned signal path design and is matched to downstream monitoring input impedance to preserve waveform fidelity.

Field Installation Guidelines

Install the Proximitor Sensor on DIN rail with secure mechanical retention to minimize vibration-induced connector micro-movement. Maintain separation between probe signal wiring and high-voltage conductors to reduce electromagnetic coupling. Ensure cable shield termination is grounded at a single-point earth reference to avoid ground loop currents. Verify probe-to-sensor continuity before energizing the system to confirm valid gap voltage response within expected eddy-current operating range.

Specifications

• Brand: Bently Nevada

Advantages

• High reliability in industrial environments
• Supports continuous operation
• Compatible with major PLC/DCS systems