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Bently Nevada 3500/62-03-00｜Process Variable Monitor｜
The Bently Nevada 3500/62-03-00 is a six-channel, isolated 4–20 mA process variable monitoring module for the 3500 Machinery Protection System.
The module is configured with isolated 4–20 mA current inputs, internal terminal connections, and does not include explosion-proof certification. It is designed for continuous monitoring and protection of key process parameters such as pressure, flow, and liquid level, supporting the safe operation of critical rotating machinery in power generation, petrochemical, and related industries.
Core Features and Technical Characteristics
Six-Channel Isolated 4–20 mA Input
The 3500/62 supports six independent, fully isolated 4–20 mA input channels, compatible with standard industrial transmitters for pressure, flow, level, and other process variables.
Input signal type: 4–20 mA (current only)
Input impedance: ≤ 250 Ω
Channel-to-channel electrical isolation for enhanced noise immunity and anti-interference performance
Measurement and Protection Capability
Measurement accuracy: ±0.1% of full scale
Supports multi-level alarm setpoints (warning / danger)
Adjustable alarm delay: 1 to 60 seconds
Includes signal open-circuit and short-circuit detection, continuous self-diagnostics, and fault alarms to ensure reliable monitoring
Outputs and Communication
Provides dry-contact relay outputs for alarm and shutdown functions and 4–20 mA analog outputs for process integration. Supports Modbus and PROFIBUS communication protocols, enabling seamless connection to DCS and ESD systems.
Remote configuration, monitoring, and diagnostics are available through the 3500/40 HMI or System 1 software.
Safety and Environmental Specifications
Designed to meet SIL 2 safety requirements. Operating temperature range is –40 °C to +70 °C, suitable for harsh industrial environments. The module supports hot swapping and installs into a standard 3500 rack card slot. Typical power consumption is approximately 8 W.
Redundancy and System Expansion
Supports Triple Modular Redundancy (TMR) configurations and voting logic to eliminate single points of failure, significantly improving system availability and reliability in critical protection applications.
Bently Nevada 3500/62-03-00｜Process Variable Monitor｜
By structuring the information in this manner, the article provides a clear and organized understanding of input channels, transducer supply, and communication implementations in distributed control systems.
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