Description
Parameters
| Parameter | Specification |
|---|---|
| Input Channels | 4, independent (IEPE accelerometer) |
| Sensor Type | IEPE accelerometers (2–20mA constant current, 18–30VDC compliance) |
| Input Range | ±5V (standard), ±10V (extended) |
| Frequency Response | 0.5Hz–20kHz (±5%) |
| Integration | Programmable (displacement, velocity, acceleration) |
| Filtering | Low-pass: 1kHz, 5kHz, 10kHz, 20kHz; High-pass: 0.1Hz, 0.5Hz, 1Hz |
| Output Signal | 0–10V DC (buffered), 4–20mA (scaled) |
| Alarm/Trip Setpoints | 4 per channel (alert/danger, programmable) |
| Accuracy | ±0.5% FS at 25°C; ±1% over -40°C to +70°C |
| Temperature Range (Sensor) | Up to +250°C (with compatible sensor) |
| Diagnostics | Sensor open/short detection, bias voltage monitoring, cable integrity |
| Isolation | 500VDC (input-to-backplane) |
| Power Supply | 5VDC (backplane), 250mA; 24VDC (sensor excitation), 200mA |
| Operating Temp | -40°C to +70°C |
| Mounting | 3500 series rack (Eurocard) |
| Certifications | CSA, ATEX, SIL 2 capable |
Advantages & Features
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High-Temperature Capability – The Bently Nevada 190065-00-01-03-01-01 supports accelerometers rated up to +250°C, ideal for gas turbine casings and steam turbine bearing housings.
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High Channel Density – 4 channels in a single slot, reducing rack space for large monitoring systems.
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Flexible Integration – Programmable output for displacement, velocity, or acceleration to suit different machine types.
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Advanced Filtering – Selectable low-pass and high-pass filters isolate specific frequency bands for fault diagnosis.
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Comprehensive Diagnostics – Continuous sensor bias voltage monitoring and open/short detection ensure signal integrity.
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SIL 2 Capable – Suitable for safety-critical vibration protection with appropriate voting.
Application Cases
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Gas Turbine Casing Vibration – Monitors high-temperature casing vibration on gas turbines using high-temp accelerometers.
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Steam Turbine Bearing Housing – Measures bearing housing vibration at elevated temperatures.
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Compressor High-Temperature Monitoring – Tracks vibration on high-temperature compressor stages.
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Exhaust Fan Monitoring – Monitors vibration on high-temperature exhaust fans and blowers.
Competitor Comparison
| Feature | Bently Nevada 190065-00 | GE DS3860HSAA | Vibro-Meter VM600 | Rockwell XM-120 |
|---|---|---|---|---|
| Channels | 4 | 8 | 4 | 1 |
| Sensor Support | IEPE (high-temp) | Voltage only | IEPE | IEPE |
| Max Sensor Temp | +250°C | N/A | +250°C | +150°C |
| Integration | Yes (prog.) | No | Yes | No |
| Frequency Response | 0.5Hz–20kHz | 0–10kHz | 0.5Hz–20kHz | 0–5kHz |
| SIL Rating | SIL 2 | SIL 2 | SIL 2 | SIL 1 |
| Integration | Bently 3500 | GE Mark VIe | Vibro-Meter | Rockwell Logix |
The Bently Nevada 190065-00-01-03-01-01 is specifically optimized for high-temperature accelerometer applications with 4-channel density, making it ideal for gas turbine and steam turbine vibration monitoring.
Selection Suggestions
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Choose for Bently Nevada 3500 series systems requiring 4-channel high-temperature accelerometer monitoring for gas turbines, steam turbines, or compressors.
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Ensure the accelerometer is compatible with high-temperature operation (up to +250°C).
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For SIL 2 applications, use with voting logic (2-out-of-3) and proof-testing every 24 months.
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Configure integration based on application: displacement (µm) for bearing vibration, velocity (mm/s) for casing vibration.
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Pair with compatible high-temperature IEPE accelerometers (e.g., Bently Nevada 330500 series).
Precautions
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Sensor Compatibility – The Bently Nevada 190065-00-01-03-01-01 is designed for IEPE accelerometers. Ensure the sensor has 2–20mA constant current capability.
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Cable Temperature Rating – Use cables rated for the same temperature as the sensor. Standard cables degrade above +150°C.
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Grounding – Proper grounding is critical to prevent noise pickup. Connect sensor cable shields to the module common terminal at the module end only.
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Filter Selection – For high-temperature applications, use the 0.5Hz high-pass filter to remove DC offset. Low-pass filter should be set based on machine speed (10kHz for high-speed turbines, 1kHz for slow-speed equipment).
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Bias Voltage Monitoring – The Bently Nevada 190065-00-01-03-01-01 monitors sensor bias voltage (typically 10–12V). A deviation >10% indicates a sensor or cable fault.
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Calibration – Factory calibration valid for 24 months. Recalibrate using a certified shaker table or signal calibrator.
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ESD Handling – Use ESD-safe practices when handling the module. High-temperature accelerometer inputs are sensitive to electrostatic discharge.
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