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330708-00-20-50-02-00

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330708-00-20-50-02-00 3300 XL 11 mm proximity probe with armor protection, suitable for installation environments where agency certification is not required.
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Technical specifications for 330708-00-20-50-02-00

  • Manufacturer:
    Bently Nevada
  • Part Number:
    330708-00-20-50-02-00
  • Product Family:
    3300 XL 11mm Proximity Transducer System
  • Unthreaded Length:
    0.0 in
  • Overall Case Length:
    2.0 in
  • Total Length:
    5.0 meters (16.4 feet)
  • probe cable total probe lengths:
    1, 5 or 9 meters.
  • Probe Case Thread:
    1/2-20 thread
  • Maximum Length of Thread Engagement:
    0.750 in
  • Cable-Type:
    standard cable
  • Connector -Type:
    Miniature coaxial ClickLoc connector
  • Weight:
    0.6 kg
  • Estimated shipping dimensions:
    30x25x3cm
  • 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 Use Cases Operating Environment Monitoring & Control

Features:

  • Interface Between the Fluid Film Bearing Machine and 3300 XL 11 mm Proximity Transducer System
  • Combines Capability of Non-Contacting Vibration and Displacement Measurement with Extended Linear Range Support
  • Operates in Conjunction with the 3300 XL 11 mm Extension Cable and 3300 XL 11 mm Proximitor Sensor
The 330708-00-20-50-02-00 operates as the 3300 XL 11 mm Proximity Probe in a 3300 XL 11 mm transducer system, providing reliable non-contacting vibration and displacement measurements on fluid film bearing machines. It continuously converts physical displacement (axial position, differential expansion, rod position) into precise electrical signals (3.94 V/mm or 100 mV/mil output) and transmits these signals through the extension cable to support steady state monitoring of all critical machinery parameters. Seamless signal transmission is standard with the 330708-00-20-50-02-00, however using an optional Redundant Monitoring Configuration will allow seamless switchover to a backup sensor in the event of a primary probe failure. The 330708-00-20-50-02-00 has made improvements in several areas over previous 7200-series 11 mm and 14 mm probe designs in addition to incorporating universal 5/8-18 UNF thread capability within the 3300 XL 11 mm system.

The 330708-00-20-50-02-00 provides essential measurement functions common to the entire transducer system, and is a critical component of the monitoring path, directly affecting the proper, normal operation of the overall machinery protection system. One 330708-00-20-50-02-00 probe is required per measurement point depending on the desired monitoring location. The 330708-00-20-50-02-00 occupies a single probe installation point in the machine housing and is always located at the measurement position (threaded into the machine case, the dedicated probe mounting location).

For Dual Redundant Monitoring applications, the 3300 XL 11 mm System requires a second 330708-00-20-50-02-00 probe module installed in the redundant position. In addition to standard single probe operation, the redundant configuration also performs automatic switchover. The 3300 XL 11 mm dual probe configuration executes failover using the internal circuitry specified in the monitoring system options. Using this method, the redundant monitoring system continually monitors the health of both probes. If the system detects that the primary 330708-00-20-50-02-00 probe is no longer providing stable output (outside configured signal/tolerance levels), it will automatically transfer the measurement to the secondary probe and place an event in the System Event List.

The 330708-00-20-50-02-00 Bently Nevada 3300 XL 11 mm Proximity Probe may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).

Bently Nevada 330708-00-20-50-02-00 3300 XL 11 mm Proximity Probe 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 330708-00-20-50-02-00 3300 XL 11 mm Proximity Probe Specs

General

  • Manufacturer Bently Nevada
  • Model 330708-00-20-50-02-00
  • Condition New Original ready stock
  • Product Family 330708-00-20-50-02-05,330708-00-20-50-12-00
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.
  • Axial (Thrust) Position: Measuring the longitudinal movement of a shaft within its bearings.
  • Radial Vibration & Position: Monitoring the side-to-side motion of rotating shafts in fluid-film bearing machines.
  • Differential Expansion: Tracking the relative thermal expansion between a turbine rotor and its casing, specifically in steam turbine environments.
  • Reciprocating Compressors: Measuring rod position or "rod drop" to monitor rider band wear.
  • Speed & Phase Reference: Providing tachometer, zero speed, and Keyphasor signals for phase-locked data acquisition.
  • Probe & Cable: Typically rated from -52°C to +177°C (-62°F to +351°F).
  • Caution: Exposing the probe to temperatures below -34°C (-30°F) may cause premature failure of its internal pressure seal.
  • Humidity & Ingress: 100% condensing humidity; non-submersible unless connectors are protected by specialized protectors or silicone tape.
  • Chemical Resistance: Features a Polyphenylene sulfide (PPS) tip and AISI 304 stainless steel case to resist corrosion.
  • EMI/RFI Immunity: Improved immunity to high-frequency radio signals and electromagnetic interference, allowing for CE mark approvals without special shielded conduit.
  • Output Signal: Generates a standard 3.94 V/mm (100 mV/mil) output proportional to the gap between the probe tip and the target material (typically AISI 4140 steel).
  • Frequency Response: Measures vibration and position within a range of 0 to 8 kHz.
  • System Compatibility: Fully compatible with Bently Nevada 3500 series monitors using configuration software v2.82 or later.
  • Interchangeability: Designed for complete interchangeability of probes and cables within the 3300 XL 11 mm series (all components are color-coded purple).
Description
The 330708-00-20-50-02-00 is a 3300 XL 11 mm Proximity Probe specifically engineered for critical machinery monitoring applications in industrial environments. This probe features a 5/8-18 UNF thread configuration with armor protection, an unthreaded length of 0.0 inches, and an overall case length of 2.0 inches. The 330708-00-20-50-02-00 comes with a total cable length of 5.0 meters (16.4 feet) and utilizes a miniature coaxial ClickLoc connector with standard cable type, making it suitable for installations where agency approvals are not required.

The 330708-00-20-50-02-00 serves as a core component of the Bently Nevada™ 3300 XL 11 mm Proximity Transducer System, which delivers a precise 3.94 V/mm (100 mV/mil) output for non-contacting vibration and displacement measurements on fluid film bearing machines. This 330708-00-20-50-02-00 probe is distinguished by its large 11 mm tip diameter, which provides a significantly longer linear range compared to standard 8 mm transducer systems. The 330708-00-20-50-02-00 is specifically designed for applications requiring extended linear range capabilities, including axial (thrust) position measurements, ramp differential expansion measurements on steam turbines, rod position or rod drop measurements on reciprocating compressors, tachometer and zero speed measurements, and phase reference (Keyphasor) signal generation.

The 330708-00-20-50-02-00 is fully compatible with the complete 3300 XL 11 mm system architecture, which includes the 3300 XL 11 mm extension cable and the 3300 XL 11 mm Proximitor Sensor. When implementing the 330708-00-20-50-02-00 as part of a system upgrade from legacy 7200-series 11 mm and 14 mm transducer systems, all components must be replaced with corresponding 3300 XL 11 mm parts, and the monitoring system configuration must be updated accordingly. For installations utilizing the 3500 Monitoring System, the 330708-00-20-50-02-00 requires an updated version of the configuration software that recognizes the 3300 XL 11 mm Transducer System as a compatible option.
Alternative Names
330708 00 20 50 02 00 330708-00-20-50-02-05 330708-00-20-50-02-CN 330708-00-20-50-12-00 330708-00-20-50-01-00
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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 is the 330708-00-20-50-02-00?
The 330708-00-20-50-02-00 is a 3300 XL 11 mm Proximity Probe designed for critical machinery monitoring in industrial environments, especially for non-contact vibration and displacement measurements.
What is the output signal of this probe?
The probe provides a precise output of 3.94 V/mm (100 mV/mil) for accurate displacement and vibration measurement.
Is this probe compatible with the full 3300 XL system?
Yes. It is fully compatible with the 3300 XL 11 mm system, including extension cables and Proximitor Sensors.

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