Product Introduction
The Bently Nevada 330101-00-20-10-02-00 is a non-contact eddy current proximity probe from the 3300 XL series, designed for 8 mm probe systems. It is used to measure radial vibration, axial position, eccentricity, and speed of rotating machinery shafts. The probe generates an output voltage proportional to the distance between the probe tip and the target surface (typically a shaft).
The part number breaks down as follows:
330101 – 3300 XL 8 mm probe, 3/8-24 UNF threaded case, no armor
00 – Unthreaded length: 0.0 inches (threads extend fully to the tip)
20 – Overall case length: 2.0 inches (from tip to connector end of case)
10 – Total length: 1.0 meter (probe + integral cable)
02 – Connector type: Miniature coaxial ClickLoc™
00 – No special agency approval
The probe is constructed with a PPS (Polyphenylene Sulfide) tip and a stainless steel case, offering excellent resistance to oil, water, chemicals, and high temperatures. The integral cable is equipped with a ClickLoc™ connector for secure, one-handed connection to a 3300 XL extension cable or directly to a Proximitor sensor.
Key Specifications (including Dimensions and Weight)
| Parameter | Value |
|---|---|
| Tip diameter | 8 mm (0.315 in) |
| Overall case length | 50.8 mm (2.0 in) |
| Unthreaded length | 0.0 mm (0.0 in) – threads extend to tip |
| Thread size | 3/8-24 UNF |
| Total length (probe + integral cable) | 1.0 m (3.3 ft) |
| Cable outer diameter | 2.9 mm (0.114 in) |
| Weight | 0.10 kg (0.22 lb) |
| Connector type | Miniature coaxial ClickLoc™ (male) |
| Measurement range | 0.25 mm to 2.25 mm (10 mils to 90 mils) linear range (standard 8 mm system) |
| Linear range (full scale) | 2.0 mm (80 mils) typical |
| Scale factor (sensitivity) | 7.87 V/mm (200 mV/mil) typical |
| Gap voltage (at nominal mounting position) | -10.0 VDC (±2 V) |
| Linearity error | ±0.5% of full scale |
| Probe tip material | PPS (Polyphenylene Sulfide) |
| Probe case material | AISI 303 or 304 stainless steel |
| Cable insulation | FEP (fluoropolymer) |
| Operating temperature (probe tip) | -40 °C to +300 °C (-40 °F to +572 °F) |
| Operating temperature (cable and connector) | -51 °C to +177 °C (-60 °F to +350 °F) |
| Minimum bend radius (cable) | 25 mm (1.0 in) |
| Fluid resistance | Resistant to water, steam, oil, hydraulic fluids, and mild acids/bases |
Application Scenarios
The 330101-00-20-10-02-00 probe is used in continuous monitoring systems for critical and general-purpose rotating machinery. Typical applications include:
Radial vibration measurement (XY pairs) – Two probes mounted 90° apart at a bearing measure shaft relative vibration for protection and diagnostics in turbines, compressors, and large motors.
Axial (thrust) position monitoring – Single probe mounted against a thrust collar or shaft end measures rotor axial position, detecting thrust bearing wear or rotor migration.
Shaft eccentricity measurement – Used during startup and slow roll to detect rotor bow or thermal bending in steam and gas turbines.
Speed and zero speed detection – Sensing passing gear teeth or keyway edges to provide RPM signals to a Keyphasor module for phase reference.
Differential expansion – Measuring relative movement between rotor and casing in large steam turbines (with appropriate target design).
Replacement or retrofit – Directly replacing existing 3300 XL 8 mm probes (e.g., 330101-00-20-10-02-00 variants with different length options) without changing extension cables or Proximitor settings.
This probe is typically paired with:
3300 XL extension cable (e.g., 330130-040-01-00 or similar) when total distance exceeds 1.0 m
3300 XL Proximitor sensor (e.g., 330180-50-00 or 330180-90-00)
3500 or 1900 series monitor rack for signal processing and alarming
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All products are purchased directly from overseas original manufacturers or authorized channels, 100% guaranteed genuine quality, sufficient spot inventory, and comprehensive model coverage
Quality Commitment
Each product has been tested by our technicians, providing 12-month long warranty, worry-free after-sales
Flexible procurement plan
- Bulk order enjoys Friendship discount (2 pieces or more can be applied)
- Long-term cooperative customers can apply for priority supply
Full service support
7×24 hours technical consultation, from selection guidance to installation and commissioning to provide full life cycle service (paid)
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On the basis of the same quality, we provide:
- More competitive price system
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- More complete technical support (free product technical documentation)
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