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330101-00-31-20-02-05

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Bently Nevada 330101-00-31-20-02-05 is a high-temperature, ATEX/IECEx-certified 8 mm eddy current probe designed for non-contact vibration and position monitoring in critical turbomachinery.
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Technical specifications for 330101-00-31-20-02-05

  • Manufacturer:
    Bently Nevada
  • Part Number:
    330101-00-31-20-02-05
  • Product Type:
    Proximity Probes
  • Probe Case Material:
    AISI 303 or 304 Stainless Steel
  • Operating Temperature:
    -52°C to +177°C (-62°F to +350°F)
  • Linear Range:
    2 mm (80 mils) [0.25 mm to 2.3 mm]
  • Recommended Gap (Radial Vibration):
    -9 Vdc (approx. 1.27 mm / 50 mils)
  • Target Material Calibration:
    AISI 4140 steel
  • Unthreaded Length:
    0.0 in.
  • Overall Case Length:
    3.1 in.
  • Total Length:
    2.0 meters (6.6 feet)
  • Connector and Cable-Type:
    Miniature coaxial ClickLoc connector, standard cable
  • Agency Approval:
    CSA, ATEX, IECEx Approvals
  • Weight:
    0.05 kg
  • Estimated shipping dimensions:
    1.6x1.4x119cm
  • Tariff Code:
    8537101190
  • Country of origin:
    USA
  • Place of shipment:
    Xiamen, Fujian, China
By purchasing this item, you agree to the Terms & Conditions, ApterPower is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with ApterPower's 1-year warranty.

More Information

Overview Manuals Specifications Applications Environmental Ratings Safety & Compliance

Features:

  • Tool-Free, Vibration-Proof Connectivity
  • Robust High-Temperature & Hazardous Area Operation
  • True Interchangeability Without Re-calibration
The Bently Nevada 330101-00-31-20-02-05 utilizes a gold-plated ClickLoc™ connector that locks securely with a simple finger-tight turn until an audible "click" is heard. This eliminates the need for torque wrenches or specialized tools and prevents the connection from loosening due to continuous machine vibration, ensuring long-term signal integrity.

Certified with the 05 agency approval (CSA/ATEX/IECEx), the Bently Nevada 330101-00-31-20-02-05 is rated for intrinsic safety (Ex ia IIC) for Zone 0 installations. Combined with a probe operating range up to +177°C and a Viton® pressure seal, this transducer is the ideal choice for direct mounting inside the casings of gas turbines and steam turbines operating in explosive atmospheres.

Unlike competitive sensors that require component matching, the Bently Nevada 330101-00-31-20-02-05 is part of the 3300 XL platform supporting complete component interchangeability. You can swap this probe with any other compatible 5 mm or 8 mm 3300 XL probe or extension cable without performing a factory bench calibration, drastically reducing maintenance downtime and spare parts complexity.

The 330101-00-31-20-02-05 Bently Nevada 3300 XL 8 mm Proximity Probes may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Bently Nevada 330101-00-31-20-02-05 3300 XL 8 mm Proximity Probes Manuals,Datasheets,Link Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
Bently Nevada 330101-00-31-20-02-05 3300 XL 8 mm Proximity Probes

General

  • Manufacturer GE / Bently Nevada
  • Model 330101-00-31-20-02-05
  • Condition New Original ready stock
  • Product Family 330101-00-31-20-02-00,330101-00-31-20-02-CN,330101-00-31-20-02-RU
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
  • Radial Vibration Monitoring: Continuously measures shaft displacement relative to the bearing housing in high-speed turbomachinery like centrifugal compressors, helping predict bearing wear and imbalance.
  • Axial (Thrust) Position Measurement: Monitors rotor movement against the thrust bearing to prevent catastrophic rubbing between rotating and stationary components in steam turbines.
  • Keyphasor® Reference & Speed Measurement: Provides a once-per-turn timing mark for phase analysis and precise speed detection on large diesel engines and gas turbines.
  • Shaft Centering & Eccentricity: Used during startup to measure rotor bow or low-speed runout, ensuring the machine passes critical speeds safely.
  • Wide Operating Temperature: The probe tip and cable withstand extreme environments from -52°C (-62°F) in arctic startup conditions up to +177°C (+350°F) for high-temperature steam turbine casings.
  • Viton® Pressure Seal: Designed to contain differential pressure between the probe tip and case, preventing process gas or oil leakage through the mounting hole.
  • Humidity Resistance: The molded PPS tip is tested to IEC 68-2-3 (93% humidity for 56 days), showing less than 3% change in scale factor for reliable performance in humid or coastal environments.
  • RFI/EMI Immunity: The Bently Nevada 330101-00-31-20-02-05, when paired with the 3300 XL Proximitor sensor, offers high immunity to radio frequency interference, allowing safe installation in fiberglass housings without special shielded conduit.
  • ATEX/IECEx (Ex ia IIC): Certified for intrinsically safe installation in Zone 0, Zone 1, and Zone 2 explosive gas atmospheres (requires zener barriers or galvanic isolators per drawing 141092).
  • cNRTLus Approval: Recognized for use in Class I, Groups A, B, C, D hazardous locations in North America when installed with non-incendive circuits.
  • API 670 Compliance: The 5-meter version of this system fully complies with the American Petroleum Institute's 4th edition standard for mechanical configuration, linear range, and temperature stability.
  • CE & RoHS: Meets European EMC Directive 2014/30/EU and RoHS environmental standards, ensuring global market access./span>
Description
The Bently Nevada 330101-00-31-20-02-05 is a precision-engineered 3300 XL 8 mm proximity probe that converts physical displacement into a proportional voltage signal. It excels in measuring both static (axial position) and dynamic (radial vibration) values on fluid-film bearing machines, compressors, and gas turbines. The patented TipLoc™ molding process ensures an unbreakable bond between the probe tip and body, delivering exceptional durability in harsh industrial environments.

Designed for demanding applications, the Bently Nevada 330101-00-31-20-02-05 operates reliably across a wide temperature range from -52°C to +177°C. It comes standard with the 05 agency approval option, meaning it is fully certified for use in hazardous areas with CSA, ATEX, and IECEx (Ex ia IIC T4/T5 Ga) approvals. This allows you to install the probe directly into Zone 0 or Zone 1 classified environments without additional safety barriers when used with the correct Proximitor® sensor.

One key advantage of the Bently Nevada 330101-00-31-20-02-05 is its complete electrical and physical interchangeability with other 3300 XL 5 mm and 8 mm system components. The gold-plated ClickLoc™ connector requires only finger-tight torque (audible "click") to secure, eliminating the need for special tools and preventing loosening due to vibration. With a case length of 3.1 inches and an unthreaded length of 0.0 inches, this specific configuration offers maximum mounting flexibility for tight casing clearances.
Alternative Names
3301010031200205 33O1O1-OO-31-2O-O2-O5 330I0I-00-3I-20-02-05 330101-00-31-20-02-00 330101-00-31-20-02-CN 330101-00-31-20-02-RU 330101-00-31-20-02-BR 33OIOI-OO-3I-2O-O2-O5
Technical notes
The Bently Nevada 330101-00-31-20-02-05 is designed for use with a 3300 XL Proximitor® sensor (e.g., 330180-50-00). The total system length (probe + extension cable) must match the Proximitor sensor’s designated length (5m or 9m) to maintain specified linear accuracy.
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FAQS

The following is a list of questions commonly asked by our customers. Please contact us if you have a question about our process that is not answered below.
What types of machinery is the Bently Nevada 330101-00-31-20-02-05 primarily used for?
The Bently Nevada 330101-00-31-20-02-05 is specifically designed for fluid-film bearing machines, including steam turbines, gas turbines, centrifugal compressors, and large pumps. It monitors radial vibration (shaft motion) and axial position (thrust) to prevent catastrophic rotor-to-stator rubs.
Can the Bently Nevada 330101-00-31-20-02-05 be used in explosive gas environments?
Yes. Because this specific configuration includes the 05 approval option, the Bently Nevada 330101-00-31-20-02-05 carries ATEX and IECEx certification for Ex ia IIC T4/T5 Ga environments, making it suitable for Zone 0, Zone 1, and Zone 2 hazardous areas when connected through an intrinsic safety barrier.
How do I prevent oil leaks through the probe cable conduit?
The standard Bently Nevada 330101-00-31-20-02-05 uses a Viton® O-ring to seal the probe tip against the case. For applications where oil might wick through the cable interior, Bently Nevada offers a special “FluidLoc” cable option (not included in this standard 02 cable code). If leakage is a concern, you must order a configuration with 11 or 12 in the connector option field.
What is the recommended gap voltage for the Bently Nevada 330101-00-31-20-02-05 when setting up radial vibration monitoring?
The datasheet specifically recommends a gap of -9 Vdc for the Bently Nevada 330101-00-31-20-02-05 when used for radial vibration measurements. This corresponds to a physical gap of approximately 1.27 mm (50 mils) from the target, placing the probe in the center of its 2 mm linear range for optimal dynamic performance.