Description

Bently Nevada 330195-02-12-10-CN 3300 XL 8 mm ETR Reverse Mount Probes

The Bently Nevada 330195-02-12-10-CN, also cataloged as the 330195-02-12-10-CN 3300 XL 8 mm Extended Temperature Range (ETR) Reverse Mount Probe, operates as a dedicated hardware component for non-contact shaft displacement measurement within Bently Nevada TSI monitoring systems.

Hardware Specifications

Parameter	Specification
Model	330195-02-12-10-CN
Brand	Bently Nevada
Product Type	3300 XL 8 mm Extended Temperature Range (ETR) Reverse Mount Probe
Origin	USA
Mounting Style	Reverse Mount
Probe Diameter	8 mm
Temperature Range	Extended Temperature Range (ETR) design
Total Length	1.0 metre (3.3 feet)
Thread Configuration	Reverse mount configuration
Agency Approval	CN approval option
Weight	0.323 kg
Operating Temp	Extended temperature range design; exact limits not specified
Power Consumption	Passive probe element; powered by compatible proximity system

Eddy-Current Probe Scaling and Rotor Dynamics Measurement

The 3300 XL 8 mm ETR Reverse Mount Probe uses eddy-current measurement technology to detect relative shaft displacement without mechanical contact. The probe output changes according to the distance between the probe tip and the conductive target surface.

Furthermore, the probe operates with compatible Bently Nevada proximity systems that apply eddy-current probe scaling for accurate displacement conversion. The system validates probe operation through gap voltage monitoring, including standard -10 VDC target gap voltage reference conditions used during installation verification.

The reverse mount construction supports installation locations where standard mounting access is limited. In addition, the probe provides measurement data required for rotor dynamics analysis, including shaft vibration, axial position, and mechanical movement evaluation.

Frequently Asked Questions

Q: What measurement principle does the Bently Nevada 330195-02-12-10-CN use?
A: The probe uses eddy-current technology to measure shaft displacement by detecting changes in the electromagnetic field between the probe tip and the target surface.

Q: What does the CN suffix indicate in the model number?
A: The CN suffix identifies the country-specific approval option for China requirements. The probe includes the corresponding CN approval configuration.

Q: Can this probe operate without a proximity system?
A: No. The probe requires a compatible Bently Nevada proximity sensor system, extension cable, and driver module to generate and process displacement signals.

Field Installation Guidelines

• Install the reverse mount probe according to the mechanical drawing and approved mounting arrangement for the equipment.
• Verify the probe tip position against the target shaft surface before operation.
• Maintain correct cable routing to reduce electrical interference and avoid parallel installation with high-current power conductors.
• Connect cable shielding according to the monitoring system grounding practice to reduce signal noise.
• Confirm the operating gap voltage after installation. Bently Nevada systems commonly use approximately -10 VDC as the nominal target gap reference for verification.
• Inspect the probe thread engagement and mechanical fixation before commissioning.
• Confirm compatibility between the probe, extension cable, and proximity driver before applying power.

Specifications

• Brand: Bently Nevada

Advantages

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