Description

Bently Nevada 330101-15-35-10-02-05 3300 XL 8 mm Proximity Probe

The Bently Nevada 330101-15-35-10-02-05, also cataloged as the 330101 proximity probe, executes non-contacting displacement measurement by inducing eddy currents in a conductive target mounted on rotating machinery shafts within the 3300 XL transducer system.

Suffix Breakdown & Model Matrix

Suffix Code	Parameter	Specification
-15	Unthreaded Length	1.5 inches
-35	Overall Case Length	3.5 inches
-10	Total Length	1.0 m
-02	Connector Option	Miniature coaxial ClickLoc connector, standard cable
-05	Agency Approval	ATEX, IECEx, CSA hazardous area certified

Hardware Specifications

Parameter	Specification
Model Brand	Bently Nevada
Origin	United States
Weight	0.15 kg (typical)
Dimensions	3/8-24 UNF-2A thread, 3.5 in case length
Operating Temp	-51 degC to +177 degC
Power Consumption	Supplied via Proximitor Sensor, < 20 mA loop current
Target Material	AISI 4140 steel (calibration reference)
Linear Range	2.0 mm (80 mils), starts ~0.25 mm from probe face
Scale Factor	7.87 V/mm (200 mV/mil)
Frequency Response	0 to 10 kHz, +0 / -3 dB
Pressure Rating	7 bar (100 psi) differential
Cable Type	75 ohm coaxial, FEP jacket
Connector	Gold-plated brass ClickLoc coaxial

Eddy-Current Probe Scaling and Gap Voltage Validation

When interfaced with a 3300 XL Proximitor Sensor, the probe’s scale factor remains fixed at 7.87 V/mm. Gap voltage validation targets -10 VDC for standard installation. Cross-talk suppression is achieved through individual shielded coaxial cabling and strict separation from power conductors in multi-probe arrays. Calibration drift over temperature is bounded within the linear range specification without requiring field scaling adjustments.

Frequently Asked Questions

Q: Can the probe be extended beyond 9.0 m total system length?

A: No. The maximum supported configuration is 9.0 m using a 1.0 m probe and an 8.0 m extension cable. Exceeding this length degrades high-frequency response beyond specified limits.

Q: Is hot-swapping permitted in energized systems?

A: No. Removal or insertion while the Proximitor Sensor is powered may damage the probe coil and electronics due to transient voltage spikes.

Q: What is the minimum clearance required between adjacent probes?

A: Maintain at least 50 mm center-to-center spacing to prevent electromagnetic cross-talk that can affect linearity.

Field Installation Guidelines

Install the probe with 3/8-24 UNF threads fully engaged into the machine housing, torqued to 5.6 N·m. Ensure the probe tip does not contact the rotating surface during operation. Terminate the coaxial shield at the Proximitor Sensor end only to maintain single-point grounding. Route the cable away from AC power lines and avoid tight bends exceeding 50 mm radius. Verify gap voltage after mechanical installation before system commissioning.

Specifications

• Brand: Bently Nevada

Advantages

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