Bently Nevada 3500/62 Process Variable Monitor (PVM) Module
1. Core Functions
Multi-Channel Process Monitoring:
Accepts 4–20 mA current inputs or ±10 Vdc voltage signals to monitor non-vibration parameters like pressure, temperature, flow, and displacement.
Provides signal conditioning (isolation, filtering) to ensure data accuracy and reduce false alarms.
Machinery Protection & Alarming:
Compares real-time process data against user-programmable alarm setpoints (e.g., high/low alerts, danger thresholds) to trigger protective actions (e.g., shutdowns).
Supports intrinsically safe configurations with zener barriers for hazardous environments.
Integration & Diagnostics:
Works within the 3500 rack system, interfacing with vibration monitors (e.g., 3500/42) for comprehensive equipment health analysis.
Data accessible via System 1® for predictive maintenance and root-cause diagnostics (e.g., correlating temperature spikes with bearing wear).
2. Technical Features
Input Types:
Voltage: ±10 Vdc (non-isolated) or 4–20 mA (isolated or intrinsically safe).
Configurable per channel via 3500 Configuration Software.
Redundancy: Compatible with TMR (Triple Modular Redundancy) when three modules are installed adjacently.
Environmental: Operates in -30°C to +65°C industrial conditions.
3. Applications
Critical Industries: Power plants (turbines, generators), oil & gas (compressors, pumps), and chemical processing.
Monitoring Targets:
Rotating Machinery: Lube oil pressure, bearing temperatures, steam flow.
Process Safety: Pipeline pressure, coolant levels, safety interlock triggers.
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