Bently Nevada 330103-19-25-10-01-00 3300 XL 8mm Probe

High-Performance Eddy-Current Sensor for Shaft Monitoring

The Bently Nevada 330103-19-25-10-01-00 3300 XL 8 mm proximity probe provides precise non-contact vibration and position measurements for rotating machinery. This probe operates as part of the 3300 XL Proximity Transducer System, delivering advanced performance that fully complies with API 670 Standard (4th Edition) requirements . The system supports complete interchangeability of probes, extension cables, and Proximitor sensors, eliminating the need for individual component matching or bench calibration .

Technical Specifications

Parameter	Specification
Model Number	330103-19-25-10-01-00
Brand	Bently Nevada
Category	3300 XL 8 mm Proximity Probe
Probe Tip Diameter	8 mm
Thread Type	M10 x 1
Unthreaded Length	190 mm (code 19)
Overall Case Length	250 mm (code 25)
Total Cable Length	1.0 meter (code 10)
Connector Type	Miniature coaxial ClickLoc™ with protector (code 01)
Agency Approval	Not required (code 00)
Scale Factor	7.87 V/mm (200 mV/mil) ±5%
Linear Range	2.0 mm (80 mils), from 0.25 mm to 2.3 mm
Recommended Gap	1.27 mm (50 mils) at -9 VDC
Output Range	-1 VDC to -17 VDC
Frequency Response	0 to 10 kHz, +0, -3 dB
Supply Voltage	-17.5 VDC to -26 VDC
Current Consumption	12 mA maximum
Output Impedance	50 Ω
Probe Resistance	7.59 Ω ±0.50
Probe Tip Material	Polyphenylene sulfide (PPS)
Probe Case Material	AISI 303/304 stainless steel
Cable Insulation	FEP fluoropolymer
Operating Temperature (Probe)	-52°C to +177°C
Weight	0.323 kg
Country of Origin	USA

Precision Measurement Capability

This eddy-current probe converts small changes in the gap between the sensing tip and a conductive target into stable analog output signals . The scale factor of 7.87 V/mm ensures accurate displacement readings across the full 2.0 mm linear range . The frequency response from 0 to 10 kHz captures both slow shaft movements and high-speed vibrations . Consequently, the system enables early detection of bearing wear, unbalance, and misalignment.

Construction and Durability

The PPS molded tip encapsulates the probe coil, providing enhanced protection and mechanical robustness . AISI 304 stainless steel construction of the probe case ensures excellent corrosion resistance and mechanical strength . Viton® O-ring seals effectively prevent differential pressure between the probe tip and case . This robust design delivers reliable performance in demanding industrial environments.

Standardized Connection Interface

The miniature coaxial ClickLoc™ connector provides a secure, vibration-resistant connection to extension cables . Gold-plated brass contacts maintain consistent electrical performance over time. The connector design prevents accidental disconnections and ensures stable signal transmission . This standardized interface simplifies installation and system integration.

System Integration Requirements

This probe requires consistent electrical lengths across all three system components: probe, extension cable, and Proximitor sensor . The electrical length of the probe plus the extension cable must equal the electrical length of the Proximitor . The system supports up to 305 meters of field wiring between the Proximitor sensor and the monitor . This compatibility allows seamless integration with existing 3300 series racks and 3500 series monitoring systems.

Application Suitability

This probe serves steam turbines, gas turbines, compressors, pumps, and generators in power generation and oil and gas facilities . Its primary applications include radial vibration monitoring, axial position measurement, and Keyphasor reference for speed sensing . The probe also performs differential expansion and thrust position measurements. Its proven reliability makes it a trusted choice for critical rotating equipment protection worldwide.