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Product Description
The Bently Nevada 3500/44 Aeroderivative Monitor is a four-channel vibration monitoring module specifically designed for aeroderivative gas turbines. It continuously monitors vibration levels, compares them with preset alarms, and provides real-time information to operations and maintenance personnel. It supports advanced filtering (signal integration, 1X tracking, band-pass) and interfaces seamlessly with Velomitor sensors, accelerometers, and Prox/Velom I/O modules.
Technical Specifications
| Parameter | Specification |
|---|---|
| Channels | 4 |
| Power Consumption | 7.7 W (typical) |
| Input Types | Velomitors, accelerometers, Proximitor interfaces |
| Input Impedance | >95 kΩ (Aero GT I/O), 10 kΩ / 3.5 MΩ (Prox/Velom I/O) |
| Frequency Response | 4 Hz to 30 kHz (direct signal) |
| Alarm Accuracy | ±0.13% of desired value |
| Outputs | 4–20 mA recorder outputs, buffered transducer outputs |
| Alarm Setpoints | User-configurable alert and danger levels |
| Dimensions (H × W × D) | 241.3 × 24.4 × 241.8 mm |
| Weight | 0.91 kg |
| Certifications | FCC, EMC, RoHS, ATEX, IECEx, ABS, DNV |
| Mounting | Requires 1 full-height front and rear slot |
Applications
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Aeroderivative gas turbine vibration monitoring
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Industrial machinery protection in oil and gas, power generation, and marine
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Multi-mode machinery with configurable alarm profiles per mode
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Condition monitoring integrated into Bently Nevada 3500 racks
Advantages
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Tailored for high-speed aeroderivative turbines
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Supports multimode operation with up to eight configurable alarm sets
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Compatible with a variety of sensors and I/O configurations
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High accuracy with wide frequency response range
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Rugged design with global hazardous area certifications
Frequently Asked Questions (FAQ)
Q1: What machinery is the 3500/44 designed for?
A1: It is specifically designed for aeroderivative gas turbines and similar high-speed rotating machinery.
Q2: How many channels does the monitor support?
A2: It supports up to four independent channels.
Q3: What kind of sensors can I connect to it?
A3: Velomitors, accelerometers, and Proximitor transducers through appropriate interface modules.
Q4: Does it support multi-mode operation?
A4: Yes, it allows configuration of up to eight sets of alarm parameters for different machine modes.
Q5: What output signals does it provide?
A5: It provides 4–20 mA recorder outputs and buffered transducer signals.
Q6: What certifications does the 3500/44 have?
A6: It is certified for FCC, EMC, RoHS, ATEX/IECEx, ABS, and DNV.
Q7: Can it be used in hazardous areas?
A7: Yes, with proper I/O options, it is certified for Class I, Division 2 and Zone 2 hazardous areas.
Q8: What is the power consumption of the module?
A8: Typical power consumption is 7.7 watts.
Q9: What is the typical frequency response?
A9: Direct signals are accurately measured from 4 Hz up to 30 kHz.
Q10: What are the physical dimensions and weight?
A10: The main module is 241.3 × 24.4 × 241.8 mm and weighs approximately 0.91 kg.
Related Models (Same Series or Related)
| Model | Description | Dimensions (mm) | Weight |
|---|---|---|---|
| 3500/42M | Proximitor Seismic Monitor | 241.3 × 24.4 × 241.8 | 0.91 kg |
| 3500/40M | Proximitor Monitor | 241.3 × 24.4 × 241.8 | 0.91 kg |
| 3500/50 | Tachometer Module | 241.3 × 24.4 × 241.8 | 0.91 kg |
| 3500/60 | Temperature Monitor | 241.3 × 24.4 × 241.8 | 0.91 kg |
| 3500/61 | Temperature Monitor High Density | 241.3 × 24.4 × 241.8 | 0.91 kg |
| 3500/62 | Process Variable Monitor | 241.3 × 24.4 × 241.8 | 0.91 kg |
Popular Models (Same Brand)
| Model | Description | Dimensions (mm) | Weight |
|---|---|---|---|
| 3500/20 | Rack Interface Module | 241.3 × 24.4 × 241.8 | 0.91 kg |
| 3500/22M | Transient Data Interface | 241.3 × 24.4 × 241.8 | 0.91 kg |
| 3500/15 | Power Supply Module | 241.3 × 24.4 × 241.8 | 0.91 kg |
| 3500/25 | Keyphasor Module | 241.3 × 24.4 × 241.8 | 0.91 kg |
| 3500/32M | Relay Module | 241.3 × 24.4 × 241.8 | 0.91 kg |
| 3500/93 | Display Module | 241.3 × 24.4 × 241.8 | 0.91 kg |
