وصف

Bently Nevada 330905-00-10-05-02-CN 3300 NSv Proximity Probe

The Bently Nevada 330905-00-10-05-02-CN, also cataloged as the 330905 3300 NSv Proximity Probe, operates as a dedicated hardware component for non-contact shaft displacement measurement within Bently Nevada 3300 NSv machinery monitoring systems.

Hardware Specifications

Parameter	Specification
Model	330905-00-10-05-02-CN
Brand	Bently Nevada
Product Series	3300 NSv Proximity Transducer System
Product Type	5 mm Non-contact Proximity Probe
Origin	USA
Dimensions	5 mm probe tip diameter; 1.0 inch case length; 0.5 meter cable length
Thread Type	M10 x 1 metric thread
Unthreaded Length	0 mm
Probe Tip Material	Polyphenylene sulfide (PPS)
Probe Case Material	AISI 303 / 304 stainless steel
Cable Construction	75 Ohm triaxial FEP insulated cable
Connector Type	Miniature coaxial ClickLoc connector
Operating Temp	-51 deg C to +177 deg C
Power Consumption	Supplied through compatible Bently Nevada Proximitor sensor interface
Measurement Principle	Eddy-current displacement sensing
Linear Range	0.25 mm to 2.0 mm
Average Scale Factor	7.87 V/mm (200 mV/mil), +/-5% typical
Frequency Response	0 Hz to 10 kHz, +/-3 dB
Output Signal	Analog DC voltage proportional to probe gap
Environmental Protection	IP67 rated
Target Application	Small shaft diameters below 51 mm or small flat targets below 15 mm
Compliance	Designed for API 670 machinery protection applications

Eddy-Current Probe Scaling and Gap Voltage Validation

The 3300 NSv probe uses an eddy-current sensing circuit to convert shaft displacement into an analog voltage output. The probe maintains a defined relationship between physical gap distance and output voltage through the calibrated scale factor.

The installation process requires gap voltage validation through the connected Proximitor interface. Technicians typically verify the probe operating point near the standard -10 VDC target position to confirm correct measurement range and signal stability.

The narrow side-view construction reduces metallic interference from surrounding installation structures. Therefore, the probe can operate in restricted mounting locations where conventional 8 mm proximity probes may experience side-wall effects.

Frequently Asked Questions

Q: What type of machinery is the 330905-00-10-05-02-CN designed for?
A: The probe is designed for compact rotating equipment requiring non-contact shaft displacement measurement, including small compressors, pumps, motors, and machines with limited installation clearance.

Q: Does the probe require a separate signal conditioning device?
A: Yes. The probe operates as part of the Bently Nevada 3300 NSv Proximity Transducer System and requires a compatible Proximitor sensor interface to provide excitation and signal conversion.

Q: What installation factor affects measurement accuracy?
A: Correct probe gap adjustment, proper target material conditions, and controlled cable routing affect eddy-current measurement accuracy. Shielding and grounding practices must follow the system installation requirements.

Field Installation Guidelines

Install the 330905-00-10-05-02-CN probe using the specified M10 x 1 mounting thread and maintain mechanical clearance around the probe tip to avoid unwanted metallic interference.

Route the 75 Ohm triaxial cable away from high-current power conductors, variable frequency drive cables, and strong electromagnetic noise sources. Avoid sharp cable bends that may affect cable integrity.

Connect the ClickLoc coaxial connector using proper hand tightening procedures. Verify the probe gap voltage after installation and confirm that the operating point remains within the calibrated measurement range.

Use appropriate grounding methods for the monitoring system. The cable shield termination must follow Bently Nevada installation practices to minimize electrical noise and signal distortion.

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