描述
1.产品定位与核心功能
VALM-818405推测为耐腐蚀自清洁型阀门定位器，定位化工、制药及海水淡化系统，聚焦强酸/强碱介质兼容性、防垢自清洁涂层与在线化学兼容性诊断。其核心功能包括：
控制性能：
-位置精度：±0.03%（全行程范围内，抗介质腐蚀漂移）；
-响应时间：≤10ms（高黏度介质下稳定响应）。
环境适应性：
-介质兼容性：浓度≥98%硫酸、30%双氧水、海水等；
-温度范围：-20°C至+180°C（宽温区耐腐蚀）。
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Profinet、EtherNet/IP）；
-输出类型：Hastelloy C-276阀内件+PTFE涂层阀座（耐应力腐蚀开裂）；
供电要求
-电压范围：24V DC（防爆认证Ex ia IIC T6）；
-功耗：≤10W（峰值），休眠模式0.05W；
通信接口
-数字总线：Modbus TCP/IP、BACnet；
-无线扩展：NB-IoT（远程腐蚀速率监测）。
3.功能特性
耐腐蚀材料体系：
-核心材料：双相不锈钢2507+钽金属衬里（氢脆阈值>200MPa）；
-表面处理：等离子体增强化学气相沉积（PECVD）金刚石-like碳（DLC）涂层。
自清洁与防垢：
-流道设计：螺旋形超疏水表面（接触角>150°，自排水防结垢）；
-超声波辅助：内置压电换能器（频率可调，清除≥50μm颗粒）。
智能诊断：
-化学兼容性评估：内置介质数据库（支持硫酸/硝酸混合物腐蚀预测）；
1.Product positioning and core functions
VALM-818405 is speculated to be a corrosion-resistant self-cleaning valve positioner,which locates chemical,pharmaceutical and seawater desalination systems,focusing on strong acid/strong alkali medium compatibility,anti-scaling self-cleaning coating and online chemical compatibility diagnosis.Its core functions include:
Control performance:
-Position accuracy:±0.03%(within the entire stroke range,resistant to medium corrosion drift);
-Response time:≤10ms(stable response under high viscosity medium).
Environmental adaptability:
-Media compatibility:concentration≥98%sulfuric acid,30%hydrogen peroxide,seawater,etc.;
-Temperature range:-20°C to+180°C(with corrosion resistance in wide temperature zone).
2.Key technical parameters
Project Typical specifications(refer to similar products)
Input/Output
-Input signal:4–20mA DC(supports Profinet,EtherNet/IP);
-Output type:Hastelloy C-276 valve inner part+PTFE coated valve seat(resistant to stress corrosion cracking);
Power supply requirements
-Voltage range:24V DC(Explosion-proof Certified Ex ia IIC T6);
-Power consumption:≤10W(peak),sleep mode 0.05W;
Communication interface
-Digital bus:Modbus TCP/IP,BACnet;
-Wireless expansion:NB-IoT(Remote Corrosion Rate Monitoring).
3.Functional characteristics
Corrosion-resistant material system:
-Core material:duplex stainless steel 2507+tantalum metal lining(hydrogen embrittlement threshold>200MPa);
-Surface treatment:Plasma enhanced chemical vapor deposition(PECVD)diamond-like carbon(DLC)coating.
Self-cleaning and anti-scaling:
-Runner design:spiral superhydrophobic surface(contact angle>150°,self-draining and preventing scaling);
-Ultrasonic assist:built-in piezoelectric transducer(frequency adjustable,clearing particles≥50μm).
Intelligent Diagnosis:
-Chemical compatibility assessment:built-in media database(supports corrosion prediction of sulfuric acid/nitric acid mixture);
