3500/46M-03-00 | Dual-Channel Vibration Monitor

Product Model **3500/46M-03-00**
Manufacturer Bently Nevada (GE)
Product Type Dual-Channel Vibration Monitor
Input Signals Proximitor (Eddy Current), Velocity, Accelerometer
Measurement Range 0–25.4 mm pk-pk (displacement), 0–50 mm/s (velocity)
Frequency Range 0.5 Hz–10 kHz (dependent on sensor)
Alarm Relays 4 per channel (Danger, Alert, OK-to-Run, Aux)
Communication Modbus RTU, Ethernet/IP, OPC UA via 3500/92
Power Supply 18–30 VDC (24 VDC nominal), 10 W max
Operating Temperature -40°C to +85°C
Certifications SIL 2 (IEC 61508), ATEX, IECEx, CE
Dimensions 320 x 45 x 110 mm (fits 3500 series rack)
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Description

Technical Specifications

Product Model **3500/46M-03-00**
Manufacturer Bently Nevada (GE)
Product Type Dual-Channel Vibration Monitor
Input Signals Proximitor (Eddy Current), Velocity, Accelerometer
Measurement Range 0–25.4 mm pk-pk (displacement), 0–50 mm/s (velocity)
Frequency Range 0.5 Hz–10 kHz (dependent on sensor)
Alarm Relays 4 per channel (Danger, Alert, OK-to-Run, Aux)
Communication Modbus RTU, Ethernet/IP, OPC UA via 3500/92
Power Supply 18–30 VDC (24 VDC nominal), 10 W max
Operating Temperature -40°C to +85°C
Certifications SIL 2 (IEC 61508), ATEX, IECEx, CE
Dimensions 320 x 45 x 110 mm (fits 3500 series rack)

Key Features and Advantages

The **3500/46M-03-00** provides machinery protection with dual-channel redundancy for critical assets. Its **TMR (Triple Modular Redundancy)** architecture ensures fail-safe operation, while dynamic signal processing captures peak-to-peak, RMS, and spectral data. Integrated **OK-to-Run** logic prevents false trips during startup/shutdown. Bently’s **System 1™** software integration enables predictive maintenance via real-time trend analysis and waveform capture.

Robust EMI/RFI shielding (EN 61326) and galvanic isolation (1,500 VAC) protect against electrical noise. The module’s non-volatile memory retains configurations during power loss, and front-panel LEDs provide instant health status. Optional **HART 7** pass-through supports smart sensor integration.

3500/42M-01-00

Application Areas

Gas turbines, steam turbines, centrifugal compressors, and high-speed pumps in oil & gas, power generation, and petrochemical plants. Used for axial/radial vibration monitoring, bearing health assessment, and rotor imbalance detection. Ideal for API 670-compliant machinery protection.

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Installation and Configuration

**Installation**: Mount in 3500 series rack (slot 4–12). Use Belden 9501 shielded cables for sensor inputs. Ground the rack to a dedicated earth grid (≤1 Ω). Maintain 50 mm clearance from high-voltage lines.

**Configuration**: Set sensor sensitivity (mV/µm) and alarm thresholds via **3500 Rack Configuration Software**. Perform gap voltage calibration with **TK-3E** test kit. Validate relay logic using simulated vibration signals.

Maintenance and Diagnostics

Monitor sensor gap voltage monthly (8–12 VDC for proximitors). Clean sensor connectors annually with isopropyl alcohol. Replace backup battery (BB-3500) every 5 years. Use **Trendmaster® Pro** for spectral analysis during scheduled outages.

Product Assurance

Bently Nevada’s **3500/46M-03-00** undergoes 1,000-hour HALT testing and 100,000 relay cycle validation. The 5-year warranty includes SIL 2 certification documentation and 24/7 access to GE’s **M&D Technical Support**. Compliance with ISO 10816-3 ensures vibration severity standards.

Note: For SIL 2 applications, use redundant modules in TMR configuration. Always follow Bently Nevada’s **TI-346M-03-00** installation guide. Verify sensor compatibility using the **3300 Sensor Selection Tool**.

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