Description

Bently Nevada 330101-00-30-10-02-00 3300 XL 8 mm Proximity Probes

Configured for mechanical vibration and position monitoring in TSI systems, the Bently Nevada 330101-00-30-10-02-00 (330101 3300 XL 8 mm Probe) provides direct physical/electrical execution. It operates as a proximity transducer to measure static and dynamic distance variations between the probe tip and the target shaft surface, transforming mechanical displacement into proportional electrical signals for machinery protection infrastructure.

Hardware Specifications

Parameter	Specification
Model Brand	Bently Nevada
Origin	USA
Weight	0.1 kg
Dimensions	58.5 x 1.5 x 1.5 cm
Thread Type	3/8-24 UNF thread, without armor
Unthreaded Length Option	0.0 in
Overall Case Length Option	3.0 in
Total Length Option	1.0 meter (3.3 feet)
Connector and Cable Type	Miniature coaxial ClickLoc connector, standard cable
Agency Approval Option	Not required
Operating Temp	-51 degC to +177 degC (Standard industrial rating)
Power Consumption	Passive sensor component (Powered by external Proximitor Sensor)
Tariff Code	8537101190

Eddy-Current Probe Scaling and Gap Voltage Validation

The probe operates on eddy-current principles, requiring precise calibration against an AISI 4140 steel target to maintain a standard scale factor of 7.87 V/mm (200 mV/mil). During field installation, gap voltage validation must be conducted using a digital multimeter. Adjust the physical gap until the Proximitor output reaches a -10 VDC target, representing the midpoint of the linear operating range. This setup suppresses cross-talk anomalies when multiple probes are installed in close proximity, ensuring accurate rotor dynamics monitoring without phase lag or signal degradation.

Frequently Asked Questions

Q: Can this probe be connected directly to a standard DCS analog input card?

A: No. The probe is a passive inductive component and must be matched with a 3300 XL Proximitor Sensor. The Proximitor converts the impedance changes into a -200 mV/mil analog voltage signal suitable for TSI monitors or specialized high-speed inputs.

Q: What is the mechanical limitation for installing adjacent 8 mm probes?

A: To prevent cross-talk suppression failures and signal interference from adjacent magnetic fields, a minimum spacing of 40 mm (1.6 in) between probe tips must be maintained unless specific staggered frequency configurations are used.

Field Installation Guidelines

• Thread Engagement: Ensure the 3/8-24 UNF threads engage smoothly without cross-threading. Use a calibrated torque wrench to avoid crushing the internal coaxial transition point inside the case.
• ClickLoc Connector Handling: Do not use pliers or metallic tools to tighten the miniature coaxial ClickLoc connector. Finger-tighten until the positive click detent is felt. Ensure the connection remains clean, dry, and free of oil or moisture contamination.
• Shield Grounding: The coaxial cable shield must be isolated from the machine casing and grounded exclusively at the Proximitor Sensor common terminal within the instrumentation enclosure to prevent ground loop noise.
• Routing Limitations: Observe the minimum bend radius of 25.4 mm (1.0 in) for the standard coaxial cable during installation to avoid dielectric deformation and subsequent signal attenuation.

Specifications

• Brand: Bently Nevada

Advantages

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