描述
主要产品详情和功能
4通道位置监测器：3500/45是一款4通道仪器，这意味着它可以同时接收最多4个独立位置传感器的输入。
传感器兼容性：它功能多样，可接收各种类型的传感器输入，包括：
电涡流传感器：用于非接触式测量轴位置、轴向（推力）位置或差动膨胀。
旋转位置传感器(RPT)：用于测量旋转位置。
直流线性可变差动变压器(DC LVDT)：用于线性位置测量。
交流线性可变差动变压器(AC LVDT)：另一种用于线性位置的LVDT。
旋转电位器：用于测量角位移。
测量功能：该监测器可编程执行各种关键位置测量，包括：
轴向（推力）位置：监测旋转轴的轴向运动。
胀差：测量转子和壳体之间的相对膨胀，这对涡轮机保护至关重要。
标准单斜坡胀差
非标准单斜坡胀差
双斜坡胀差
互补胀差(CIDE)
壳体膨胀：监测机壳的热膨胀。
阀门位置：对于控制和监测关键阀门（例如涡轮机上的蒸汽阀）的位置至关重要。
机械保护：其主要目的是通过持续将监测参数与用户可编程的警报和危险报警设定值进行比较来提供机械保护。如果参数超过这些阈值，监测器可以触发警报，甚至启动自动停机以防止损坏。
信号调理：该模块对原始输入信号进行调理，滤除噪声，确保位置测量准确可靠。
输出：它通常提供与监测器满量程成比例的记录仪输出（例如4-20 mA DC），从而允许与DCS、SCADA或其他数据采集系统集成。每个通道通常配备一个同轴连接器，用于输出动态信号以供分析。
诊断信息：为操作和维护人员提供必要的机器信息，有助于故障排除和制定主动维护策略。
3500系列集成：3500/45可无缝集成到Bently Nevada 3500机架式监测系统中，并与机架中的其他模块共享电源、通信和处理能力。
TMR应用：它可用于三模块冗余(TMR)应用，其中三个冗余监测器持续比较输出，以增强可靠性和容错能力。
技术规格（通用）
通道：4个独立输入通道。
精度：通常为满量程的±0.25%（室温），阀门位置最大为满量程的±1%。
分辨率：高分辨率，通常采用16位ADC，精度达到亚毫米级。
输入信号：取决于传感器类型（例如，某些输入为-10 Vdc至+10 Vdc）。
输出范围：4-20 mA DC（记录器输出）。
电源要求：通常由3500机架供电（例如，24 VDC）。
工作温度：宽范围，通常为-30°C至+65°C（-22°F至+150°F）。
储存温度：-40°C至+85°C（-40°F至+185°F）。
湿度耐受性：95%RH（无凝结）。
尺寸（监控模块-主板）：约241.3毫米（高）x 24.4毫米（宽）x 241.8毫米（深）。
重量（显示器模块）：约0.91千克（2.0磅）。
原产国：美国。
Key Product Details and Functions
4-Channel Position Monitor:The 3500/45 is a four-channel instrument,meaning it can accept inputs from up to four independent position transducers simultaneously.
Transducer Compatibility:It’s highly versatile,accepting input from a variety of transducer types,including:
Proximity Transducers:For non-contact measurement of shaft position,axial(thrust)position,or differential expansion.
Rotary Position Transducers(RPTs):For measuring rotary positions.
DC Linear Variable Differential Transformers(DC LVDTs):For linear position measurements.
AC Linear Variable Differential Transformers(AC LVDTs):Another type of LVDT for linear position.
Rotary Potentiometers:For measuring angular displacement.
Measurement Functions:The monitor can be programmed to perform various critical position measurements,including:
Axial(Thrust)Position:Monitoring the axial movement of a rotating shaft.
Differential Expansion:Measuring the relative expansion between rotor and casing,critical for turbine protection.
Standard Single Ramp Differential Expansion
Non-standard Single Ramp Differential Expansion
Dual Ramp Differential Expansion
Complementary Differential Expansion(CIDE)
Case Expansion:Monitoring the thermal expansion of the machine casing.
Valve Position:Crucial for controlling and monitoring the position of critical valves(e.g.,steam valves on turbines).
Machinery Protection:Its primary purpose is to provide machinery protection by continuously comparing monitored parameters against user-programmable Alert and Danger alarm setpoints.If a parameter exceeds these thresholds,the monitor can trigger alarms or even initiate automatic shutdowns to prevent damage.
Signal Conditioning:The module conditions the raw input signals,filtering out noise and ensuring accurate and reliable position measurements.
Outputs:It typically provides recorder outputs(e.g.,4-20 mA DC)proportional to the monitor’s full-scale range,allowing integration with DCS,SCADA,or other data acquisition systems.Each channel usually has a coaxial connector for dynamic signal output for analysis.
Diagnostic Information:Provides essential machine information for both operations and maintenance personnel,aiding in troubleshooting and proactive maintenance strategies.
3500 Series Integration:The 3500/45 seamlessly integrates into the Bently Nevada 3500 rack-based monitoring system,sharing power,communication,and processing with other modules in the rack.
TMR Applications:It can be used in Triple Modular Redundancy(TMR)applications,where three redundant monitors continuously compare outputs for enhanced reliability and fault tolerance.
Technical Specifications(General)
Channels:4 independent input channels.
Accuracy:Typically±0.25%of full scale(at room temperature),±1%maximum(full-scale)for valve position.
Resolution:High resolution,often 16-bit ADC for sub-millimeter precision.
Input Signal:Varies depending on transducer type(e.g.,-10 Vdc to+10 Vdc for certain inputs).
Output Range:4-20 mA DC(recorder outputs).
Power Requirements:Typically supplied by the 3500 rack(e.g.,24 VDC).
Operating Temperature:Wide range,commonly-30°C to+65°C(-22°F to+150°F).
Storage Temperature:-40°C to+85°C(-40°F to+185°F).
Humidity Tolerance:95%RH non-condensing.
Dimensions(Monitor Module-Main Board):Approx.241.3 mm(Height)x 24.4 mm(Width)x 241.8 mm(Depth).
Weight(Monitor Module):Approx.0.91 kg(2.0 lb).
Country of Origin:United States.
ABB Model: GBU72 3BHE055094R0002 Model: 3BHE055094R0002 GBU72 Model: GBU72 Model: 3BHE055094R0002 Model: 3BHE031197R0001 Model: 3BHB030310R0001 Model: 73BHE055094R0002 GBU72 Model: 73BHE055094R0002 Model: GBU72 Model: ABB PCS6000 PRODUCT FAMLIY ABB 5SHY4045L0006 3BHB030310R0001 3BHE039203R0101 GVC736CE101
