Description

Bently Nevada 330907-05-30-05-02-CN 3300 NSv Reverse Mount Probe

Configured for shaft displacement measurement in the 3300 XL NSv Proximity Transducer System, the Bently Nevada 330907-05-30-05-02-CN (330907 3300 NSv Reverse Mount Probe) provides direct physical signal conversion through an eddy-current sensing circuit. The probe measures relative shaft motion, radial vibration, and axial position through a connected Proximitor Sensor.

Suffix Breakdown & Model Matrix

Option	Description	Specification
Base Model	Probe Series	330907 3300 NSv Reverse Mount Probe
-05	Unthreaded Case Length	50 mm
-30	Overall Case Length	300 mm
-05	Cable Length	0.5 meter (20 inches)
-02	Connector Configuration	Miniature coaxial ClickLoc connector, standard cable
-CN	Agency Approval	China-specific hazardous area approvals

Hardware Specifications

Parameter	Specification
Model	330907-05-30-05-02-CN
Brand	Bently Nevada
Product Series	3300 XL NSv Proximity Transducer System
Product Type	Eddy-Current Proximity Sensors
Origin	USA
Weight	0.02 kg
Dimensions	Estimated shipping size: 1.1 x 0.9 x 62 cm
Operating Temp	-51 deg C to +177 deg C
Power Consumption	Powered by associated Proximitor Sensor, -17.5 VDC to -26 VDC supply range
Measurement Principle	Non-contact eddy-current displacement sensing
Scale Factor	7.87 V/mm (200 mV/mil) nominal
Linear Range	Approximately 1.0 mm (40 mils)
Frequency Response	0 Hz to 6.5 kHz (+0, -3 dB)
Probe Resistance	4.0 +/- 0.5 ohm for 0.5 meter cable length
Thread Type	M10 x 1 metric thread
Mounting Configuration	Reverse Mount installation
Connector Type	Gold-plated brass miniature coaxial ClickLoc connector
Probe Tip Material	Polyphenylene Sulfide (PPS)
Probe Case Material	AISI 304 Stainless Steel
Recommended Mounting Torque	7.5 N m
Cable Material	Coaxial cable without armor/protective sleeving
Agency Approval	NEPSI / CCC Ex China-specific approvals

Eddy-Current Scaling and Rotor Dynamics Measurement

The 330907-05-30-05-02-CN uses calibrated eddy-current probe scaling to convert shaft displacement into proportional electrical signals. Therefore, the monitoring system can process vibration and position measurements through the connected Proximitor Sensor and monitoring modules.

The probe supports rotor dynamics evaluation by providing non-contact shaft motion feedback. In addition, the reverse-mount construction allows installation through a tapped housing opening from the internal machine side, which suits restricted mechanical clearances.

During commissioning, technicians verify probe operation by checking the gap voltage output from the Proximitor Sensor. The normal adjustment procedure includes confirming the operating gap near the -10 VDC target range before collecting vibration data.

Frequently Asked Questions

Q: What system components are required for operation of the 330907-05-30-05-02-CN?
A: The probe requires a compatible 3300 XL NSv Proximitor Sensor and matching NSv extension cable assembly to complete the displacement measurement circuit.

Q: What is the function of the reverse-mount configuration?
A: The reverse-mount configuration allows the probe to be inserted from inside the machine housing and threaded outward through the mounting hole.

Q: How does the probe generate vibration measurement signals?
A: The probe generates electrical output by measuring changes in eddy-current field response caused by variations between the probe tip and the rotating shaft surface.

Field Installation Guidelines

• Install the probe into the M10 x 1 mounting interface and confirm mechanical alignment with the shaft target area.
• Maintain correct probe clearance before machine rotation to prevent probe tip contact with the shaft.
• Route the coaxial cable separately from high-voltage power wiring to minimize electromagnetic interference.
• Connect the ClickLoc connector using proper engagement procedures and protect the connector from contamination.
• Verify the Proximitor Sensor output and gap voltage before enabling monitoring channels.
• Configure the monitoring system with the correct probe scale factor of 7.87 V/mm before performing vibration analysis.
• Apply proper cable routing practices to avoid excessive bending stress on the coaxial connection.

Specifications

• Brand: Bently Nevada

Advantages

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