Description

Bently Nevada 330903-00-21-10-02-05 3300 XL NSv Proximity Probe

The Bently Nevada 330903-00-21-10-02-05, also cataloged as the 330903 3300 XL NSv Proximity Probe, operates as a dedicated hardware component for eddy current displacement measurement within Bently Nevada TSI monitoring systems. The probe measures shaft position and dynamic vibration by converting gap distance changes into electrical signals.

Hardware Specifications

Parameter	Specification
Model	330903-00-21-10-02-05
Brand	Bently Nevada
Series	3300 XL NSv Proximity Probe
Product Type	Eddy Current Proximity Sensor
Origin	USA
Dimensions	Case length: 210 mm; Total cable length: 1.0 m
Operating Temp	Probe: -51 deg C to +177 deg C
Power Consumption	Powered by compatible Proximitor Sensor; value not specified
Thread Type	M8 x 1 metric thread
Armor Type	Unarmored
Unthreaded Length	0 mm
Linear Range	1.5 mm (60 mils)
Typical Gap Range	0.25 mm to 1.75 mm (10 to 70 mils)
Average Scale Factor	7.87 V/mm (200 mV/mil) nominal
Target Material	AISI 4140 steel
Minimum Target Diameter	8.9 mm; 13 mm recommended
Connector Type	Miniature coaxial ClickLoc connector
Connector Material	Gold-plated brass
Probe Tip Material	PPS molded probe tip
Agency Approval	CSA, ATEX, IECEx

Eddy Current Probe Scaling and Gap Voltage Validation

The 330903-00-21-10-02-05 uses eddy current measurement technology to determine the distance between the probe tip and the conductive shaft target. The probe output changes according to shaft displacement, allowing the connected Proximitor Sensor to calculate vibration and position values.

In addition, the system uses gap voltage validation to confirm probe operating conditions. During commissioning, technicians verify the electrical gap signal to maintain correct measurement range, with Bently Nevada proximity systems commonly using -10 VDC as the target reference for nominal operating gap conditions.

The 3300 XL NSv design also applies cross-talk suppression techniques to reduce interference when multiple probes operate within limited installation areas. Therefore, the probe supports stable rotor dynamics monitoring in applications with restricted mounting space.

Frequently Asked Questions

Q: What measurement principle does the Bently Nevada 330903-00-21-10-02-05 use?
A: The probe uses an eddy current sensing principle to measure the distance between the probe tip and a conductive shaft target. The measured displacement is converted into an electrical output signal by the Proximitor Sensor.

Q: Can the 330903-00-21-10-02-05 be installed in small clearance locations?
A: Yes. The 3300 XL NSv series uses a compact M8 x 1 threaded design for applications requiring limited mounting space and smaller shaft targets.

Q: What target material is specified for calibration?
A: The standard calibration target material is AISI 4140 steel. Other target materials may require system calibration adjustments.

Field Installation Guidelines

• Install the probe with correct M8 x 1 thread engagement and ensure the sensing tip faces the measurement target without mechanical contact.
• Maintain proper cable routing to prevent signal interference from high-current power conductors and switching equipment.
• Connect the miniature coaxial ClickLoc connector securely to maintain signal integrity.
• Verify probe gap voltage during commissioning to confirm the sensing position before vibration monitoring.
• Use appropriate shielding and grounding practices according to the connected Bently Nevada monitoring system installation requirements.
• Avoid excessive bending stress on the cable near the probe body and connector area.

Specifications

• Brand: Bently Nevada

Advantages

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