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        Bently Nevada 24765-01-01
        Bently Nevada 24765-01-01
        Bently Nevada 24765-01-01
        Bently Nevada 24765-01-01
        Bently Nevada 24765-01-01
        Bently Nevada 24765-01-01
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        24765-01-01

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        1001 reviews ｜ Need a Specific Revision?
        The 24765-01-01 is a dc LVDT case expansion transducer with ±12.7 mm range, 0.346 V/mm scale factor, 20 Hz bandwidth, and 24 Vdc input for turbine supervisory instrumentation.
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        Warranty Policy
        We provide 1 year warranty for all remaining parts.
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        Return Notice
        The warranty period is one year from the date of shipment, unless otherwise stated in the parts description. We guarantee that the project will not exhibit functional defects that may occur under normal operating conditions during the warranty period.
        In the event of a defect, we will send new equipment, repair equipment or refund the purchase price based on our availability. You must contact us to obtain a return authorization and return the defective device to us within 14 days of reporting the defect.
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        Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.Various transportation options are available in each country. Shipping methods and fees are clearly indicated on all quotations.
        Parts Availability
        Apter Power offers a wide range of components, products and services related to industrial automation. We also supply new products from a variety of quality manufacturers.
        How to order
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        Technical specifications for 24765-01-01

        • Manufacturer:
          Bently Nevada
        • Part Number:
          24765-01-01
        • Product Family:
          24765 and 135613 Case Expansion Transducer Systems
        • Product Type:
          dc LVDT Case Expansion Transducer
        • Input Power:
          +24 Vdc, 30 mA minimum
        • Scale Factor:
          0.346 V/mm (8.79 V/in)
        • Linear Range:
          ±12.7 mm (±0.5 in)
        • -3 dB Frequency:
          20 Hz
        • Linearity:
          ±0.5% full-range
        • Stability:
          0.125% full-scale
        • Operating Temperature:
          -18°C to +71°C (0°F to 160°F)
        • Key Benefit:
          Solves accurate case expansion monitoring—LVDT provides long-term stability, ±12.7 mm range captures full thermal growth, dual transducer configuration detects foot jamming before casing distortion causes damage.
        • Weight:
          1.75 kg
        • Estimated shipping dimensions:
          25x11.6x9.2cm
        • Tariff Code:
          8409919100
        • 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 Application Operating Environment Monitoring and Control

        Features:

        • LVDT technology provides long-term stability and repeatability for thermal growth measurement.
        • ±12.7 mm linear range captures full case expansion during turbine startup and operation.
        • 20 Hz bandwidth handles thermal growth rates while filtering higher-frequency vibration noise.
        The 24765-01-01 uses LVDT technology, not eddy current. No drift, no recalibration. Just stable, repeatable case expansion data year after year.

        Mount two 24765-01-01 transducers—one on each sliding foot. If a foot jams, the monitor sees differential growth and alarms. Catch distortion before it damages the turbine.

        Case expansion happens slowly as the turbine warms up. The 24765-01-01’s 20 Hz bandwidth captures the thermal growth curve while rejecting vibration noise. Clean data, accurate alarms.

        The 24765-01-01 Bently Nevada 24765 dc LVDT Assembly Electrical may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).

        Bently Nevada 24765-01-01 24765 dc LVDT Assembly Electrical Manuals, Datasheets, Drivers, 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 24765-01-01 24765 dc LVDT Assembly Electrical Specs

        General

        • Manufacturer GE / Bently Nevada
        • Model 24765-01-01
        • Condition New Original ready stock
        • Product Family 24765-02-01,135613-01-01,135613-02-01,24765-01-02
        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.
        • Gas Turbine Internal Monitoring: Monitoring bearing vibration, axial displacement, or speed in the high-pressure section of gas turbines, where ambient temperatures typically exceed the limits of standard probes.
        • High-Pressure Steam Turbines: Used for condition monitoring near steam seals or the high-pressure rotor section.
        • Industrial Boilers and Fans: Used in induced draft fans (ID fans) or other rotating equipment that handles high-temperature flue gas.
        • Aero Engine Test Benches: Used during the research and development testing phase to monitor the dynamic clearances of core engine components.
        • Pressure and Sealing: A high-strength sealing structure exists between the probe tip and the housing to prevent media penetration in environments subjected to high-pressure steam or oil vapors.
        • PCorrosion Resistance: The housing is typically made of AISI 300 series stainless steel, and the cable is coated with a special Teflon or fiberglass woven protective layer.
        • System Composition: Requires use with Proximitor sensors from the 3300 series or 3300 XL series.
        • Gap Voltage: Monitors the DC bias voltage to confirm that the probe is installed in the correct linear center.
        • Dynamic Vibration: Outputs an AC signal for amplitude and spectrum analysis by the 3500/42M displacement monitoring module.
        • Installation and Control Requirements: Due to thermal expansion at high temperatures, accurate calculation of thermal gap compensation is necessary during installation to ensure that the probe remains within the linear measurement range after the machine reaches thermal stability.
        View as PDF
        Description
        The 24765-01-01 measures case expansion (shell expansion) in steam turbines—the thermal growth of the machine casing as it heats up during startup. It mounts on the foundation at the opposite end from where the turbine casing is fixed, providing data on how the machine grows relative to its base. The LVDT design delivers ±12.7 mm linear range with 0.346 V/mm scale factor.

        This transducer requires +24 Vdc at 30 mA minimum and outputs a signal proportional to case expansion. The 24765-01-01 has a -3 dB frequency of 20 Hz, capturing thermal growth rates accurately. Linearity is ±0.5% full-range, with 0.125% full-scale stability. Operating temperature spans -18°C to +71°C.

        For critical turbines, dual transducer arrangements measure both sliding feet positions. A jammed foot distorts the case and can damage the machine. The 24765-01-01, paired with 3300 or 3500 monitors, provides alarms for this condition. The high-temperature version works only with the 3500/45 Position Monitor.

        This LVDT solves the pain point of accurate case expansion monitoring in steam turbines. The 24765-01-01’s ±12.7 mm range captures full thermal growth, while its LVDT technology provides long-term stability. Dual transducer configurations detect foot jamming before casing distortion causes damage.
        Alternative Names
        24765-02-01 135613-01-01 135613-02-01 24765-01-02
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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.
        VIEW ALL FAQS
        What is the linear range of the 24765-01-01?
        ±12.7 mm (±0.5 in), covering the thermal growth expected in most steam turbines.
        What power supply does this transducer need?
        +24 Vdc at 30 mA minimum. Standard industrial power supplies work directly.
        Can I use one transducer to measure case expansion?
        Yes, but dual transducers (one on each sliding foot) are recommended to detect foot jamming before casing distortion occurs.
        What monitors are compatible with the 24765-01-01?
        3300 or 3500 monitors for standard temperature. The high-temperature version requires the 3500/45 Position Monitor.

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        Bently Nevada 24765-01-01