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        Bently Nevada 3500/25 149369-01 Enhanced Keyphasor module for phase reference and rotor speed measurements
        Bently Nevada 3500/25 149369-01 Keyphasor module with front status LEDs, two channel indicators, and coaxial connectors
        Bently Nevada 3500/25 149369-01 phase reference module with circuit board components and rack backplane connector
        Bently Nevada 3500/25 149369-01 Enhanced Keyphasor module for phase reference and rotor speed measurements
        Bently Nevada 3500/25 149369-01 Keyphasor module with front status LEDs, two channel indicators, and coaxial connectors
        Bently Nevada 3500/25 149369-01 phase reference module with circuit board components and rack backplane connector
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        • Lifecycle status

           Active / Available from OEM
          Apter Power delivers brand-new, factory-current Bently Nevada 3500/25 149369-01  modules, boosting your machinery protection network with authentic, high-speed tracking electronics.

        3500/25 149369-01

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        1001 reviews ｜ Need a Specific Revision?
        The 3500/25 149369-01 Enhanced Keyphasor Module is a two-channel, half-height module designed to provide Keyphasor signals to monitor modules in the 3500 Machinery Protection System.
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        Ships by Thursday, October 29
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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
        We have been working hard to update our inventory. If we have stock or parts available for new factory purchases, you can contact the order online. If we do not currently have an inventory, the displayed quantity will show "Ask". Please create an online quote or contact us by phone, fax or email to check availability.

        Technical specifications for 3500/25 149369-01

        • Manufacturer:
          Bently Nevada
        • Part Number:
          3500/25 149369-01
        • Product Family:
          3500 System
        • Product Type:
          Enhanced Keyphasor Module
        • Stock:
          2
        • OperatingTemperature:
          -30°C to +65°C(-22°F to +150°F)
        • StorageTemperature:
          -40°C to +85°C(-40°F to +185°F)
        • Humidity:
          95%, non-condensing
        • Power Consumption:
          3.2 Watts
        • Series:
          3500
        • Input Impedance:
          21.8 k Ohm minimum
        • Weight:
          0.34 kg
        • Estimated shipping dimensions:
          2.5x25.7x12cm
        • 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 Safety & Compliance Performance & Efficiency

        Features:

        • Receives Input Signals from Proximity Probes and Magnetic Pickup Sensors for Keyphasor Signal Generation
        • Converts Analog Sensor Signals to Digital Keyphasor Outputs with Expanded Signal Handling Capability
        • Functions as an Enhanced Replacement for the PWA 125792-01 Module with Full Backward Compatibility
        The 3500/25 149369-01 operates as the Enhanced Keyphasor Module in a 3500 rack, providing precise keyphasor signal processing for all modules within the system. It continuously receives input signals from proximity probes or magnetic pickup sensors and converts them to digital keyphasor signals that indicate the precise moment when a keyphasor mark on the shaft aligns with the transducer. Seamless integration is standard with the 3500/25, however using an optional Paired Configuration will allow expanded keyphasor input capacity of up to eight signals when more than four keyphasor inputs are required. The 3500/25 has made improvements in several areas over previous keyphasor module designs in addition to incorporating enhanced signal handling capability within the 3500 rack.

        The 3500/25 provides essential keyphasor functions common to the entire rack, and is a critical component of the monitoring path, directly affecting the proper, normal operation of overall rotor speed and phase-related measurements. One or two 3500/25 keyphasor modules are required per rack depending on the desired keyphasor input capacity and redundancy level. The 3500/25 occupies only a single half-height slot in the rack and can be located in any slot other than the dedicated power supply slots.

        For Triple Modular Redundant (TMR) applications, the 3500 System requires a second 3500/25 keyphasor module installed to provide primary and backup keyphasor signals in a parallel configuration. In addition to standard single module operation, the redundant configuration also performs parallel signal processing. The 3500 dual keyphasor configuration executes signal distribution using the internal circuitry specified in the module options. Using this method, the redundant keyphasor system continually monitors the health of both modules. If the system detects that the primary keyphasor module is no longer providing stable output (outside configured signal/tolerance levels), it will automatically transfer the signal processing to the secondary module and place an event in the System Event List.

        The 3500/25 149369-01 Bently Nevada Enhanced Keyphasor Module may still be available for purchase and support from Apter Power beyond End-Of-Life (EOL) by the manufacturer (OEM).
        Bently Nevada 3500/25 149369-01 Enhanced Keyphasor Module 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 3500/25 149369-01 Enhanced Keyphasor Module Specs

        General

        • Manufacturer Bently Nevada
        • Model 3500/25 149369-01
        • Condition New Original ready stock
        • Product Family 125800-01,126648-01,125800-02
        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.
        • Rotational Analysis: Provides the timing reference (Once-Per-Turn) required to calculate phase angles and perform vector-based vibration monitoring.
        • Speed Tracking: Essential for monitoring startup/shutdown ramps, coast-down curves, and steady-state RPM for turbines, compressors, and motors.
        • Multi-Event Processing: Ideal for complex machinery with gear teeth or notched shafts, as it can process multiple pulses and convert them into a single timing signal.
        • TMR Configurations: Used in Triple Modular Redundant (TMR) systems for high-reliability applications where shaft speed data is critical for safety-instrumented functions.
        • Hazardous Area Ratings: Designed for use in volatile environments, carrying certifications such as ATEX/IECEx (Zone 2) and North American Class I, Div 2 when installed with appropriate I/O modules.
        • Functional Safety: Frequently integrated into SIL (Safety Integrity Level) rated loops for overspeed protection and machinery shutdown protocols.
        • CE & CSA Compliance: Meets stringent electromagnetic compatibility (EMC) and electrical safety standards for heavy industrial use.
        • Isolation: Offers electrical isolation between field sensors and the 3500 backplane to prevent ground loops and protect system integrity.
        • Wide Dynamic Range: Supports input frequencies from 0.017 Hz to 20 kHz, covering everything from slow-roll equipment to ultra-high-speed aeroderivative turbines.
        • Field Upgradeable: Features field-flashable firmware, allowing for performance enhancements without the need for hardware removal or replacement.
        • Low Power Consumption: Operates at a typical consumption of just 3.2 Watts, minimizing the heat load within the 3500 rack.
        • Backward Compatibility: Directly replaces legacy 3500/25 modules (PWA 125792-01), ensuring a seamless path for system modernizations without rewiring.
        Description
        The 3500/25 149369-01 Enhanced Keyphasor Module is a two-channel, half-height module designed to provide Keyphasor signals to monitor modules in the 3500 Machinery Protection System. This module receives input signals from proximity probes or magnetic pickups and converts them into digital Keyphasor signals. 

        These signals are used to indicate when the Keyphasor mark on a rotating shaft aligns with the Keyphasor transducer, which is critical for measuring rotational speed and positioning in machinery.

        The 3500/25 149369-01 module is designed to work within a 3500 rack system, and can support up to four Keyphasor signals in a normal configuration, or eight signals in a paired configuration.

        Designed to support advanced vibration analysis and machinery diagnostics, the 3500/25 Enhanced Keyphasor Module generates once-per-turn or multiple-event-per-turn digital pulses that are used by other 3500 system monitor modules to calculate shaft speed, phase, and 1X vibration amplitude, enhancing the reliability of early fault detection and predictive maintenance programs.
        Alternative Names
        35OO/25 149369-01 35OO/25 I49369-OI 3500-25 35OO-25 149369-01 I49369-OI
        Technical notes
        The Bently Nevada 3500/25 149369-01 Enhanced Keyphasor Module is a high-performance, half-height, two-channel component engineered for the 3500 Machinery Protection System to provide critical once-per-turn timing signals for speed and phase measurements. This enhanced version, which replaces the legacy PWA 125792-01, features field-upgradeable firmware and supports a wide input frequency range from 0.017 Hz to 20 kHz (1 to 1,200,000 cpm), making it compatible with both proximity probes and magnetic pickups.
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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 purpose of the 3500/25 149369-01 Enhanced Keyphasor Module?
        The 3500/25 149369-01 Enhanced Keyphasor Module is used to convert signals from proximity probes or magnetic pickups into digital Keyphasor signals, which are used to measure the exact position of a rotating shaft and provide real-time feedback for machinery monitoring and protection.
        How many Keyphasor signals can the 3500/25 149369-01 module support?
        The 3500/25 149369-01 module can support up to four Keyphasor signals in a normal configuration, or up to eight Keyphasor signals when configured in a paired setup, making it flexible for various machinery protection needs.
        What types of input signals can the 3500/25 149369-01 module accept?
        The 3500/25 149369-01 module accepts input signals from proximity probes or magnetic pickups. These sensors are typically used to detect a Keyphasor mark on a rotating shaft and convert it into an electrical signal for processing.

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