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330854-040-25-00

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The 3300 XL 25 mm extension cable 330854-040-25-00 is designed specifically for measuring the differential expansion (DE) of medium to large steam turbine generators.
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Technical specifications for 330854-040-25-00

  • Manufacturer:
    Bently Nevada
  • Part Number:
    330854-040-25-00
  • Product Family:
    3300 XL 25mm Proximity Transducer System
  • Cable Length:
    4.0 metres (13.1 feet)
  • Armor and Cable Option:
    Armored High Temperature FluidLoc cable
  • Conductor (RCORE) (ohms):
    4.0 :1.0 ± 0.25
  • Conductor (RJACKET) (ohms):
    4.0 :0.3 ± 0.1
  • Extension cable capacitance:
    69.9 pF/m (21.3 pF/ft) typical
  • Extension Cable Material:
    75 Ω triaxial, perfluoroalkoxyethylene (PFA) insulated FluidLoc cable.
  • Weight:
    0.14 kg
  • Estimated shipping dimensions:
    21x21x2cm
  • 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 Safety & Compliance Installation & Integration

Features:

  • Interface Between the Probe and 3300 XL 25 mm Proximitor Sensor
  • Combines Signal Transmission Capability with High-Temperature FluidLoc Cable Protection
  • Operates in Conjunction with the 3300 XL 25 mm Probe and 3300 XL 25 mm Proximitor Sensor
The 330854-040-25-00 operates as the 4.0-metre Extension Cable in the 3300 XL 25 mm Transducer System, providing reliable signal transmission between the 25 mm probe and the Proximitor Sensor. It continuously maintains signal integrity across its 4.0 metres (13.1 feet) length and facilitates the 0.787 V/mm (20 mV/mil) output transmission through the armored high-temperature FluidLoc cable construction to support accurate differential expansion measurement on mid-size to large steam turbine generators. Seamless signal continuity is standard with the 330854-040-25-00, with its special high-temperature ClickLoc connectors ensuring secure connections at both the probe and sensor interfaces. The 330854-040-25-00 has made improvements in several areas over previous extension cable designs in addition to incorporating armored high-temperature FluidLoc cable capability within harsh steam turbine environments.

The 330854-040-25-00 provides essential connection functions common to the entire 3300 XL 25 mm Transducer System, and is a critical component of the measurement path, directly affecting the proper, normal operation of the overall differential expansion monitoring system. One 330854-040-25-00 extension cable is required per probe-sensor connection depending on the installation distance. The 330854-040-25-00 occupies the connection position between the probe and Proximitor Sensor and is always utilized to bridge the physical gap between these components.

For Dual Transducer Measurement applications, the 3300 XL 25 mm System requires additional 330854-040-25-00 extension cables installed to connect complementary probe arrangements. In addition to standard single transducer operation, the dual configuration also performs redundant measurement. The 3300 XL 25 mm dual transducer configuration executes differential expansion measurement using the mounting arrangements specified in the system options. Using this method, the redundant measurement system continually monitors the collar or ramp position from two observation points. If the system detects that one transducer is no longer providing stable measurement (due to target movement beyond linear range), it can utilize the complementary transducer data and maintain accurate differential expansion tracking.

The 330854-040-25-00 Bently Nevada 3300 XL 25 mm Extension Cable may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
Bently Nevada 330854-040-25-00 3300 XL 25 mm Extension Cable 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 330854-040-25-00 3300 XL 25 mm Extension Cable Specs

General

  • Manufacturer Bently Nevada
  • Model 330854-040-25-00
  • Condition New Original ready stock
  • Product Family 330854-040-24-00,330854-040-25-05,330854-080-25-05
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.
  • Differential Expansion (DE) Monitoring: Its primary use is measuring the relative movement between a turbine rotor and its casing (stator) in mid-size to large steam turbine generators.
  • High-Temperature Environments: Designed for "maximum survivability" in steam turbine environments, it maintains accuracy at continuous temperatures up to 200°C (392°F).
  • Leakage Prevention: The "FluidLoc" feature prevents oil and other liquids from leaking out of the machine through the cable's interior.
  • Hazardous Area Certification: The "00" suffix in the part number indicates no specific agency approvals. However, the system is designed to meet ATEX/IECEx and CSA standards for intrinsic safety when installed with appropriate zener barriers or galvanic isolators.
  • EMI/RFI Immunity: The system satisfies European CE mark requirements for electromagnetic compatibility, allowing installation in non-metallic housings without performance loss.
  • Environmental Protection: It features gold-plated, corrosion-resistant connectors and is tested for damp heat (IEC 68-2-3) to handle 100% condensing humidity when connectors are protected.
  • System Compatibility: It is a vital component of the 3300 XL 25 mm Proximity Transducer System. It is backward compatible with older 7200 series 25 mm and 35 mm systems, though all components (probe, cable, and sensor) must be replaced together for a full upgrade.
  • Connector Type: Uses specialized high-temperature ClickLoc connectors. These are finger-tightened until they "click," ensuring a secure, vibration-resistant connection without the need for tools.
  • Mounting Support: Often used with optional Sliding Brackets that allow for precise gapping and alignment within the turbine case.
  • Field Wiring: Proximitor Sensors feature SpringLoc terminal strips, which simplify and speed up field wiring by eliminating screw-type clamps that might loosen over time.
Description
The 3300 XL 25 mm Extension Cable 330854-040-25-00 is a critical component of the 3300 XL 25 mm Transducer System, specifically engineered for demanding industrial measurement applications. The 330854-040-25-00 features a cable length of 4.0 metres (13.1 feet) and is constructed with armored high-temperature FluidLoc cable, ensuring maximum durability and reliability in harsh operating environments. This extension cable 330854-040-25-00 incorporates no agency approvals but maintains the high-performance standards required for precision measurement tasks.

The 330854-040-25-00 is designed to connect seamlessly with the 25 mm probe and the 3300 XL 25 mm Proximitor Sensor, completing a comprehensive transducer system that delivers a 0.787 V/mm (20 mV/mil) output with a linear range of 12.7 mm (500 mils). The 330854-040-25-00 extension cable is specifically designed for measuring differential expansion (DE) on mid-size to large steam turbine generators, addressing the critical challenge of monitoring the difference in growth rates between the turbine rotor and the machine stator (casing). This 330854-040-25-00 cable enables accurate differential expansion measurement by facilitating the connection between proximity transducers observing a collar or ramp some distance from the thrust bearing, supporting various mounting arrangements including two transducers observing the same side of a collar, two complementary input transducers observing opposite sides of a collar, or configurations involving ramp observations to compensate for radial movement.

The 330854-040-25-00 extension cable is built to withstand extreme conditions, featuring special high-temperature ClickLoc connectors that are standard on both the probe and extension cable. The 330854-040-25-00 comes equipped with connector protectors and a disposable connector protector installation tool to ensure that the connectors remain free of contamination during installation and operation. The ClickLoc connector design on the 330854-040-25-00 includes a removable collar that facilitates routing the cable through tight clearances, making installation more efficient in complex machinery configurations. This 330854-040-25-00 cable is specifically designed to maintain system accuracy in high temperatures up to 200 °C (392 °F) and can withstand intermittent high temperatures up to 250 °C (482 °F), ensuring continuous operation in the harshest steam turbine DE environments where reliability is paramount for preventing catastrophic equipment failure.
Alternative Names
330854-040-24-00 330854-040-24-05 330854-040-25-05 330854-080-24-00 330854-080-24-05
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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 function of this extension cable in the system?
It connects the 25 mm probe to the 3300 XL 25 mm Proximitor Sensor, forming a complete transducer system for accurate measurement.
What is the primary application of the 330854-040-25-00?
It is used for differential expansion (DE) measurement in mid-size to large steam turbine generators, monitoring the expansion differences between rotor and stator components.
How does this cable support different measurement configurations?
It enables flexible setups, including dual probes on the same side of a collar, opposing probes on both sides, or ramp-based configurations to compensate for radial movement.

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