1. Overview and Core Concept
The Bently Nevada 3500 series adopts a Modular Architecture, allowing users to flexibly add or replace modules according to specific monitoring needs (such as adding sensors, changing communication protocols, or upgrading protection functions). This design not only reduces the overall cost of the system but also simplifies the maintenance process.
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2. Main Parameters and Product Features
2.1 Core Monitoring and Acquisition Modules
3500/15 (Process Variable Monitoring):
Function: Monitors process variables (such as temperature, pressure, flow) and rotational speed.
Features: High-reliability design, supports redundant configuration and self-monitoring functions, suitable for industrial process control.
3500/62 (Process Variable Monitor):
Function: Monitors key parameters in industrial processes.
Features: Multi-channel monitoring, with high-precision measurement capability, commonly used in petroleum, natural gas and other industries.
3500/50 (Tachometer Module):
Function: Measures the rotational speed of rotating machinery.
Features: Wide measurement range (10 RPM to 60,000 RPM), high accuracy (±0.1% FS), fast response time (10μs), supports IECEx IA certification, suitable for hazardous areas.
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2.2 Communication and Data Processing Modules
3500/20 / 25 (RIM & Keyphasor):
Function: Rack Interface Module (RIM) connects the 3500 system with external devices; the Keyphasor module provides a time reference.
Features: Supports RS232/RS422 communication, provides accurate time reference signals, and supports dual-channel and Triple Modular Redundancy (TMR) design.
3500/92 (Communication Gateway):
Function: Enables communication between the system and other devices.
Features: Supports RS232, RS422, RS485 and TCP/IP Ethernet communication, compatible with protocols such as Modbus/RTU and Modbus/TCP, with IP65 protection level.
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2.3 Input/Output and Control Modules
3500/50 (I/O Module):
Function: Provides digital and analog input/output.
Features: Includes 8 digital inputs, 4 analog inputs, 4 analog outputs and 8 relay outputs, widely used for connecting sensors and actuators.
3500/40 (Proximitor Monitoring Module):
Function: Collects and processes data from Proximitor sensors.
Features: Multi-channel measurement, provides key parameters such as vibration and position, supports fault diagnosis and early warning.
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2.4 Display and Human-Machine Interaction Module
3500/93 (Display Module):
Function: Provides real-time data display on-site.
Features: High-resolution display screen, supports multiple display modes, complies with IEC 61131-2 standard, and is easy to operate.
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3. Structure and Composition
- Rack Interface Module (RIM): Serves as the backbone of the system, connecting various functional modules.
- Sensor Modules: Such as accelerometers, tachometers, temperature sensors, etc.
- Communication Modules: Responsible for remote data transmission and protocol conversion.
- Display and Control Modules: Provide on-site interaction and alarm functions.
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4. Application Fields
- Power Industry: Vibration monitoring and protection of generator sets, steam turbines, and water turbines.
- Petrochemical Industry: Condition monitoring of pumps, compressors, and turbines.
- Aerospace: High-precision monitoring of engines and gas turbines.
- Paper and Steel Industry: Process variable monitoring of large-scale production equipment.