The Bently Nevada 330101-00-53-10-02-00, also cataloged as the 330101 proximity probe, operates as a dedicated eddy-current sensor for shaft displacement and vibration monitoring within turbine supervisory instrumentation (TSI) systems.
Suffix Breakdown & Model Matrix
330101 → Base model, 3300 XL 8 mm proximity probe, 3/8‑24 UNF thread, no armor.
00 → Unthreaded length option, 0.0 inches.
53 → Overall case length, 5.3 inches.
10 → Cable length option, 1.0 meter (39 in).
02 → Connector type, miniature coaxial ClickLoc connector with protector.
00 → Agency approval option, standard configuration, no special approvals.
Hardware Specifications
Parameter
Specification
Model
330101-00-53-10-02-00
Brand
Bently Nevada
Origin
3300 XL proximity probe family
Weight
Not specified
Dimensions
Case length 5.3 in
Operating Temp
–52 °C to +177 °C (–62 °F to +351 °F)
Power Consumption
Passive sensor, powered via driver
Core Function
Eddy-current displacement measurement
Probe Tip Diameter
8 mm
Thread Size
3/8‑24 UNF
Cable Length
1.0 m (3.3 ft)
Connector
Miniature coaxial ClickLoc
Scale Factor
7.87 V/mm (200 mV/mil) ±5%
Linear Range
2.0 mm (80 mils)
Accuracy
±0.025 mm (±1 mil)
Materials
Case: AISI304/316 SST; Tip: PPS
Cable Seal
Viton O‑ring, FEP insulated
Impedance
75‑ohm coaxial system
Eddy-Current Probe Scaling
The probe is calibrated to a –10 VDC gap voltage target, ensuring accurate displacement conversion. This scaling supports rotor dynamics analysis and vibration monitoring. Cross-talk suppression within the 75‑ohm coaxial system maintains fidelity when multiple probes are installed in close proximity.
Frequently Asked Questions
Q: What is the linear measurement range of the probe? A: The probe supports a linear range of 2.0 mm (80 mils).
Q: How is accuracy maintained under thermal variation? A: The probe maintains ±0.025 mm (±1 mil) accuracy across its specified operating temperature range.
Q: What connector type is used? A: A miniature coaxial ClickLoc connector with protector is provided for secure attachment.
Field Installation Guidelines
Install probe tip perpendicular to shaft surface for accurate displacement measurement.
Adjust insertion depth to achieve –10 VDC gap reference.
Route coaxial cable with shielding grounded at a single point to minimize interference.
Avoid sharp bends in cable to prevent conductor fatigue.
Verify driver calibration after installation to ensure proper scale factor alignment.
