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- Overview
- Quick Detail
- Description
- Applications
- Specifications
- Competitive Advantage
- Recommended Products
Overview
Place of Origin: |
USA |
Brand Name: |
Bently Nevada |
Model Number: |
3500/44M 176449-03 |
Packaging Details: |
Original new Factory Sealed |
Delivery Time: |
5-7 days |
Payment Terms: |
T/T |
Supply Ability: |
In stock |
Quick Detail
|
Signal |
Accepts 1 to 4 signals from interface modules (86517, 86497), velomitors, and accelerometers |
|
Power Consumption |
7.7 Watts, typical |
|
Input Impedance - Aero GT I/O |
>95 kΩ (Proximitor and acceleration inputs) |
|
Input Impedance - Prox/Velom I/O and Multimode |
10 kΩ for Prox/Accel, 3.5 MΩ for Velomitor |
|
Sensitivity - Aeroderivative |
3.94 mV/(mm/s) (100 mV/in/s) or 5.71 mV/(mm/s) (145 mV/in/s) |
|
Sensitivity - Aeroderivative2 & Multimode |
3.94 mV/(mm/s), 5.71 mV/(mm/s), 10.19 mV/(m/s²) (100 mV/g), 2.55 mV/(m/s²) (25 mV/g), 1.02 mV/(m/s²) (10 mV/g) |
|
OK LED |
Indicates monitor is operating properly |
|
TX/RX LED |
Indicates communication with other 3500 Rack modules |
|
Bypass LED |
Indicates monitor is in Bypass Mode |
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Buffered Transducer Outputs |
One coaxial connector per channel, short-circuit protected |
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Output Impedance |
550 Ω |
|
Dimension: |
2.5x25.6x24cm |
|
Weight: |
0.84kg |
Description
The Bently Nevada™ 3500/44M 176449-03 Aeroderivative GT Vibration Monitor is a four-channel automation device for aeroderivative gas turbines. The 3500/44M 176449-03 accepts 1 to 4 signals from Velomitors, Proximitor, and accelerometers, conditioning them to measure 1X vibration, band-pass vibration, and integrated signals. Each channel of the 3500/44M 176449-03 can be programmed via 3500 Rack Configuration Software with alert and danger thresholds, alarm time delays, and multimode tracking using up to eight parameter sets. Operating at 23 Vdc and 7.7 W typical power, the 3500/44M 176449-03 provides ±0.13% alarm accuracy, buffered transducer outputs, and 100 ms update rate. Sensitivity options include 3.94 to 10.19 mV/(mm/s or m/s²). The 3500/44M 176449-03 communicates vibration and position data to operations and maintenance, enabling automated machine control, multimode monitoring, and real-time fault detection in gas turbine systems.
Applications
Application in Aeroderivative Gas Turbine Vibration Monitoring
The Bently Nevada™ 3500/44M 176449-03 continuously monitors turbine vibration using four channels that accept 1 to 4 signals from Velomitors, Proximitor, or accelerometers. Radial and band-pass filters from 4 Hz to 4000 Hz, along with 1X amplitude and phase lag tracking, allow the 3500/44M 176449-03 to detect misalignment or imbalance. Sensitivity ranges of 3.94 to 10.19 mV/(mm/s or m/s²) enable precise measurement of vibration velocity and acceleration.
Application in Multimode Turbine Operation Monitoring
Each channel of the 3500/44M 176449-03 supports up to eight sets of alert and danger thresholds for different turbine modes. Alarm time delays configurable from 0.1 to 60 seconds allow operators to track 1X amplitude, band-pass vibration, and phase lag across variable speeds. Multimode tracking ensures the 3500/44M 176449-03 switches automatically as turbine operating conditions change.
Application in Automated Turbine Protection and Control
Using real-time data from the 3500/44M 176449-03, automation systems can trigger alarms with ±0.13% accuracy and 100 ms update rate. Alerts initiate speed adjustments or turbine shutdown to prevent mechanical damage. Buffered transducer outputs with 550 Ω impedance allow direct connection to control systems for automated responses.
Specifications
|
Transducer Power Supply |
23 Vdc nominal at 43 mA max |
|
Voltage Compliance (Current Output) |
0 to +12 Vdc, load resistance 0 to 600 Ω |
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Resolution |
0.3662 µA per bit, ±0.25% error at room temperature, ±0.7% error over temperature range |
|
Update Rate |
100 ms or less |
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Alarm Accuracy |
Within 0.13% of desired value |
|
Alarm Modes - Aeroderivative |
Direct, 1X Amplitude, Bandpass |
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Alarm Modes - Aeroderivative2 |
Direct, Bandpass, 1X Amplitude, 1X Phase Lag |
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Alarm Modes - Multimode Aeroderivative |
Direct, Direct-B, Bandpass, Bandpass-B, 1X Ampl, 1X Ampl-B, 1X Phase Lag |
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Alarm Time Delay - Alert |
1 to 60 seconds in 1 second intervals |
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Alarm Time Delay - Danger |
0.1 seconds or 1 to 60 seconds in 1 second intervals |
Competitive Advantage
Competitive Advantage High-Sensitivity Signal Analysis
The 3500/44M 176449-03 provides precise measurements with sensitivity from 3.94 to 10.19 mV/(mm/s or m/s²) and input impedance >95 kΩ for Proximitor and acceleration channels. Signal integration and band-pass filtering enable accurate quantification of vibration and axial motion.
Competitive Advantage Fast Configuration and Programming
The 3500/44M 176449-03 uses 3500 Rack Configuration Software for rapid channel setup. Operators can program alert and danger thresholds, multimode parameters, and alarm time delays in minutes, reducing integration time in automated turbine control systems.
Competitive Advantage Real-Time Monitoring and Communication
The 3500/44M 176449-03 updates measurements every 100 ms or less and communicates critical vibration and position data to operations and maintenance. LEDs indicate OK, TX/RX, and Bypass states, enabling automated monitoring, data-driven decision-making, and quick response to vibration anomalies.
