Metso Valm-818343

-耐腐蚀等级:兼容pH 0–14全范围介质;

-工作温度:-20°C至+200°C(宽温区耐腐型)。

2.关键技术参数

项目典型规格(参考同类产品)

输入/输出

-输入信号:4–20mA DC(支持PROFIBUS PA、Foundation Fieldbus);

-输出类型:磁流变流体驱动+Hastelloy阀杆(摩擦系数<0.05);

供电要求

-电压范围:18–36V DC(防爆本质安全型);

-功耗:≤7W(峰值),休眠模式<0.06W;

描述

1.产品定位与核心功能

VALM-818343推测为耐腐蚀型阀门定位器,定位强腐蚀性介质控制场景,聚焦Hastelloy合金阀体、化学惰性涂层与抗介质侵蚀算法。其核心功能包括:

控制性能:

-位置精度:±0.07%(全行程范围内,亚微米级分辨率);

-响应时间:≤20ms(腐蚀性介质下稳定响应)。

环境适应性:

-耐腐蚀等级:兼容pH 0–14全范围介质;

-工作温度:-20°C至+200°C(宽温区耐腐型)。

2.关键技术参数

项目典型规格(参考同类产品)

输入/输出

-输入信号:4–20mA DC(支持PROFIBUS PA、Foundation Fieldbus);

-输出类型:磁流变流体驱动+Hastelloy阀杆(摩擦系数<0.05);

供电要求

-电压范围:18–36V DC(防爆本质安全型);

-功耗:≤7W(峰值),休眠模式<0.06W;

通信接口

-数字总线:Modbus RTU、EtherCAT;

-无线扩展:LoRaWAN(远距离工业监控)。

3.功能特性

抗腐蚀设计:

-材料体系:Hastelloy C-276合金+PTFE整体涂层(耐王水、浓硫酸);

-密封技术:金属缠绕垫片+氟橡胶辅助密封(API 601标准)。

动态补偿技术:

-介质侵蚀预测:基于流量-腐蚀速率模型动态调整阀位;

-自清洁表面:超疏水纳米涂层(防止结垢)。

安全与诊断:

-泄漏监测:电化学传感器检测微量腐蚀产物;

-振动抑制:内置阻尼器(适应海洋平台高频振动)。

1.Product positioning and core functions

VALM-818343 is speculated to be a corrosion-resistant valve positioner,which locates the highly corrosive medium control scenario,focusing on Hastelloy alloy valve body,chemical inert coating and anti-dip media corrosion algorithm.Its core functions include:

Control performance:

-Position accuracy:±0.07%(within the entire travel range,submicron resolution);

-Response time:≤20ms(stable response under corrosive media).

Environmental adaptability:

-Corrosion resistance grade:compatible with full range of pH 0–14;

-Operating temperature:-20°C to+200°C(Wide temperature zone corrosion resistant type).

2.Key technical parameters

Project Typical specifications(refer to similar products)

Input/Output

-Input signal:4–20mA DC(supports PROFIBUS PA,Foundation Fieldbus);

-Output type:magnetorheological fluid drive+Hastelloy stem(coefficient of friction<0.05);

Power supply requirements

-Voltage range:18–36V DC(explosion-proof intrinsic safety);

-Power consumption:≤7W(peak),sleep mode<0.06W;

Communication interface

-Digital bus:Modbus RTU,EtherCAT;

-Wireless extension:LoRaWAN(Long-distance industrial monitoring).

3.Functional characteristics

Corrosion-resistant design:

-Material system:Hastelloy C-276 alloy+PTFE overall coating(resistant to water regia,concentrated sulfuric acid);

-Seal technology:Metal winding gasket+fluoroelastic auxiliary seal(API 601 standard).

Dynamic compensation technology:

-Media erosion prediction:dynamically adjust the valve position based on the flow-corrosion rate model;

-Self-cleaning surface:Superhydrophobic nanocoating(prevent scaling).

Safety and Diagnosis:

-Leak monitoring:Electrochemical sensors detect trace corrosion products;

-Vibration suppression:Built-in damper(adapts to high-frequency vibration of marine platforms).