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3500/46M 176449-06

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The 3500/46M 176449-06 is an spare primary monitor module for the Bently Nevada 3500/46M Hydro Monitor System, designed to provide continuous machinery protection and dynamic signal conditioning.
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Technical specifications for 3500/46M 176449-06

  • Manufacturer:
    Bently Nevada
  • Part Number:
    3500/46M 176449-06
  • Product Family:
    3500 System
  • Product Type:
    Hydro Monitor Main Board
  • Stock:
    1
  • Power Consumption:
    7.7 watts, typical
  • Status LEDs:
    OK LED, TX/RX LED, Bypass LED
  • Buffered Transducer Outputs:
    4 front-panel coaxial connectors (1 per channel), short-circuit protected
  • Buffered Output Impedance:
    550 Ω
  • Supported Sensor Inputs:
    1 to 4 proximity probes, air gap sensors, velocity sensors, or accelerometers
  • Input Impedance:
    Prox/Accel: 10 kΩ; Velomitor: 3.5 MΩ; Positive Input I/O: 50 kΩ
  • Output Current Range:
    +4 to +20 mA (proportional to monitor full-scale, 1 per channel)
  • Voltage Compliance & Load:
    0 to +12 Vdc across load; Load resistance: 0 to 600 Ω
  • Resolution & Update Rate:
    0.3662 µA per bit; Update rate: 100 ms or less
  • Recorder Accuracy:
    ±0.25% error at room temperature (+25 °C); ±0.7% error over full operating temperature range
  • Alarm Setpoint Accuracy:
    Within 0.13% of the desired full-scale value
  • Alarm Time Delay Range:
    Programmable from 1 to 400 seconds in 1-second intervals
  • Operating Temperature:
    -20°C to +65°C (-4°F to +149°F)
  • ATEX/IECEx Approval:
    Ex II 3 G, Ex nA nC ic IIC T4 Gc / Ex ec nC ic IIC T4/T5 Gc
  • Hydro Thrust:
    Direct Accuracy: Within ±0.33% of full-scale typical, ±1% maximum
  • Hydro Velocity:
    Direct & Vector Accuracy: Within ±0.33% of full-scale typical, ±1% maximum
  • Hydro Acceleration:
    Direct Accuracy: Within ±1% of full-scale typical, ±2% maximum
  • Hydro Air Gap:
    Average / Minimum / Maximum Air Gap Accuracy: Within ±0.33% of full-scale typical, ±1% maximum
  • Weight:
    0.91 kg
  • Estimated shipping dimensions:
    241.3 x 24.4 x 241.8 mm
  • 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 Applications Configuration Diagnostics & Protection Certifications & Standards

Features:

  • 4-channel hydro monitoring processing board designed specifically for Bently Nevada 3500 Series machinery protection systems.
  • Processes input signals from proximity, air gap, velocity, and acceleration transducers for complete hydro-turbine coverage.
  • Provides front-panel buffered transducer outputs and 4 to 20 mA proportional recorder outputs for each channel.
The Bently Nevada 3500/46M 176449-06 processing module is currently offered as a brand-new, factory-original spare part in genuine manufacturer packaging.

This main processing card is built to monitor critical operational parameters of hydroelectric turbine generators, including radial vibration, air gap, shaft position, velocity, and stator end winding movement.

Installation requires one full-height front slot in a standard 3500 rack and must be paired with a compatible 3500 rear I/O module for proper field transducer wiring and power distribution.

Availability The Bently Nevada 3500/46M 176449-06 is fully supported by the manufacturer (OEM).
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.
  • Continuous monitoring of hydroelectric turbine-generator units for early detection of mechanical anomalies.
  • Real-time air gap measurements in salient-pole hydro generators to prevent rotor-stator rub.
  • Vibration monitoring and protection for pump-storage power generation plants.
  • Configured using 3500 Rack Configuration Software via standard backplane communication interfaces.
  • Supports programmable Alert and Danger alarm setpoint limits from 0 to 100% of full scale.
  • Allows user-definable alarm time delays ranging from 1 to 400 seconds in 1-second increments.
  • Features self-checking functionality with dedicated front-panel OK, TX/RX, and Bypass LED indicators.
  • Offers buffered coaxial outputs for all 4 channels on the front panel with built-in short-circuit protection.
  • Performs continuous transducer status checks to detect sensor faults or wiring open/short conditions.
  • Certified for Class I, Division 2 hazardous locations under CSA/NRTL/C requirements.
  • Complies with European ATEX/IECEx Zone 2 standards for potentially explosive atmospheres.
  • Approved by maritime classification societies including ABS and DNV GL for marine applications.
Description
Bently Nevada 3500/46M 176449-06 serves as the central processing unit within the 3500/46M Hydro Monitor assembly, processing signals from various transducers such as proximity probes, accelerometers, velocity sensors, and dynamic pressure sensors.

The main board conditions input data to measure key parameters including hydro radial vibration, air gap, velocity, acceleration, thrust, and stator end winding (SEW) movement. By using the 3500 Rack Configuration Software, engineers can set customized alarm parameters and configure channels in pairs, supporting both standard fixed-mode operations and advanced multi-mode state monitoring during turbine speed transitions.

Designed for seamless insertion into standard 3500 series machinery protection chassis, the 3500/46M 176449-06 features front-panel coaxial buffered transducer outputs for raw signal diagnostics without signal interference. Its ruggedized hardware construction and front status LEDs ensure reliable continuous operation, real-time diagnostic visibility, and long-term asset health management in harsh industrial environments.
Alternative Names
3500/46M 176449-06 3500/46M 176449 06 3500/46M-176449-06 3500/46M 17644906 17644906 176449-06 Bently Nevada 176449-06 176449-06 Hydro Monitor Main Board
Technical notes
The Bently Nevada 3500/46M 176449-06 main board must be paired with a compatible 3500 rear I/O module (such as Prox/Velom or Multimode I/O modules) to route transducer inputs and system field wiring.
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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.
How are alarm setpoints configured on the Bently Nevada 3500/46M 176449-06?
Alarm setpoints, delays, and channel configurations for the Bently Nevada 3500/46M 176449-06 are programmed using the 3500 Rack Configuration Software.
Can the Bently Nevada 3500/46M 176449-06 operate without a rear I/O module?
No, the Bently Nevada 3500/46M 176449-06 requires a matching 3500 rear I/O module (such as internal or external termination I/O cards) to connect field wiring.
Where is the Bently Nevada 3500/46M 176449-06 physically installed in a 3500 system?
The Bently Nevada 3500/46M 176449-06 installs into any available full-height front slot of a standard Bently Nevada 3500 rack.
What sensor types are compatible with the Bently Nevada 3500/46M 176449-06?
The Bently Nevada 3500/46M 176449-06 accepts signal inputs from proximity sensors, seismic sensors, Velomitor sensors, dynamic pressure sensors, and air gap sensors.
Is the Bently Nevada 3500/46M 176449-06 compatible with External Termination (ET) Blocks?
Yes, when paired with an external termination rear I/O module, it supports connection to Euro-style or Terminal Strip ET blocks (such as 125808-08 or 128015-08) using multi-conductor 129525 cables.
What information is needed when submitting an inquiry or requesting a quote for the 176449-06?
To obtain an accurate quote for price and delivery time, please provide the complete part number, required quantity, and destination country.

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