The 330101-00-33-10-02-CN is a Bently Nevada 3300 XL 8 mm proximity probe designed for non-contact vibration and position measurement in eddy current transducer systems. The probe operates as part of the 3300 XL 8 mm Proximity Transducer System together with an extension cable and Proximitor sensor.
The system provides an output voltage proportional to the distance between the probe tip and a conductive target surface. It supports both static (position) and dynamic (vibration) measurements. Primary use includes monitoring fluid-film bearing machinery, as well as Keyphasor reference and speed measurement applications.
The probe integrates improved mechanical bonding technologies including TipLoc molding and CableLoc construction to enhance durability and tensile strength. The ClickLoc connector design provides secure, tool-free installation and stable electrical connection.
The probe is designed for interchangeability within the 3300 XL system architecture, maintaining compatibility with 5 mm and 8 mm legacy components when system configuration rules are observed.
Features
Eddy current non-contact displacement measurement probe
Compatible with 3300 XL 8 mm Proximitor Sensor system
TipLoc molded probe tip construction for improved mechanical integrity
CableLoc design providing high tensile strength cable retention
ClickLoc gold-plated coaxial connector with finger-tight locking mechanism
Optional FluidLoc cable design to reduce fluid ingress in machinery routing
Stainless steel probe case construction (AISI 303 or 304 SST)
Interchangeable with legacy 3300 series 5 mm and 8 mm components under system rules
Designed for vibration, position, Keyphasor, and speed measurement applications
Applications
Fluid-film bearing vibration monitoring
Shaft radial vibration measurement
Axial position monitoring
Keyphasor and phase reference systems
Turbomachinery condition monitoring
Industrial rotating machinery diagnostics
Compressor and turbine monitoring systems
Generator and motor shaft displacement measurement
Ordering Information
Option Code
Description
330101
3300 XL 8 mm Probe, 3/8-24 UNF thread, without armor
-00
Unthreaded Length Option: 0.0 in
-33
Overall Case Length Option: 3.3 in
-10
Total Length Option: 1.0 meter (3.3 feet)
-02
Connector and Cable-Type Option: Miniature coaxial ClickLoc connector, standard cable
-CN
China hazardous area approval package (NEPSI + CCC + applicable markings)
Technical Specifications
Category
Specification
Probe Type
Eddy current proximity probe
Probe Tip Diameter
8 mm (0.31 in)
Cable Type
75 ohm triaxial cable (FEP or PFA insulation depending on variant)
Connector Type
Miniature coaxial ClickLoc connector
Probe Case Material
AISI 303 or 304 stainless steel
Tensile Strength
330 N (75 lbf) probe assembly (max rated)
Maximum Connector Torque
0.565 N·m (5 in·lbf)
Cable Capacitance
69.9 pF/m typical
Operating Probe Temperature
-52 C to +177 C
Extended Probe Temperature Range
Up to +218 C (tip), cable up to +260 C
Linear Range
0.25 mm to 2.3 mm (approx.)
Frequency Response
0 to 10 kHz (system dependent)
Minimum Target Size
15.2 mm flat target
Shaft Diameter Recommendation
50.8 mm minimum (76.2 mm recommended)
Probe DC Resistance
Varies by probe length (approx. 7.45 to 9.87 ohm range)
Connections/Interfaces
Connector Pin / Interface
Function
Center Conductor
Signal output
Outer Conductor
Signal return / shielding
ClickLoc Connector
Probe-to-extension cable connection
Cable Shield
EMI/RFI protection and grounding reference
Installation Guidelines
Maintain recommended gap setting of approximately 1.27 mm (50 mils) for radial vibration measurement
Ensure proper grounding and shielding of triaxial cable to reduce EMI/RFI interference
Observe minimum cable bend radius of 25.4 mm (1.0 in)
Apply correct probe mounting torque based on thread type
Use connector protectors in environments exposed to moisture or oil
Maintain proper probe alignment to target surface for accurate linear response
Ensure separation distance between probes to minimize cross-talk effects
Use approved mounting brackets for mechanical stability in rotating machinery environments
Compliance and Certifications
NEPSI hazardous area approval (China explosion protection certification)
CCC compliance marking (as applicable)
China market regulatory labeling requirements
Includes ATEX / IECEx hazardous area marking equivalency where applicable
May include radio/wireless device approval classification (as shown in documentation)
FAQ
What is the certified operating temperature range for the device tip and casing?
The operating temperature range for the probe tip and case is from -51 degC to +177 degC.
How can a technician verify if the probe cable has an open or short circuit?
Measure the resistance between the center pin and outer shell of the connector; a operational 1.0-meter probe should register a resistance between 4.0 and 8.0 ohms.
What target distance does the standard center gap voltage represent on this system?
A center gap voltage of -10.0 VDC corresponds to a distance of approximately 1.27 mm (50 mils) from the target surface.
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