以下是为您撰写的电站测温用热电阻WZP2-421B产品中英文介绍（共约450字）：

【中文版】
WZP2-421B型工业测温热电阻专为电站及工业设备温度监测需求研发，采用成熟的热电阻传感技术，在复杂工况下持续提供可靠温度数据。产品主体由耐腐蚀不锈钢外壳与精密陶瓷绝缘组件构成，内部采用特殊合金电阻丝绕制工艺，兼顾机械强度与热响应效率。

该产品适配火电厂锅炉系统、汽轮机设备、水处理装置等场景的温度监控，可长期耐受-50℃至+450℃工作温度范围。核心测温元件通过多层保护结构设计，有效减少介质腐蚀及机械振动带来的影响。优化封装工艺使产品在高温高压环境下仍能保持稳定输出特性，典型测温偏差控制在±1.5℃范围内。

为满足不同安装需求，WZP2-421B提供多种过程连接方式，包括法兰安装、螺纹固定及套管插入等形式。接线盒采用双层防水结构设计，防护等级达到IP65标准，适应室内外多种环境条件。产品出厂前均经过多阶段性能测试，确保在连续运行工况下的长期稳定性。

配套温度变送模块可实现4-20mA标准信号输出，便于与DCS系统集成。维护人员可通过常规检测仪表直接读取实时温度数据，显著提升设备巡检效率。建议定期进行清洁保养以维持最佳工作状态，建议维护周期为12-18个月。

【English Version】
The WZP2-421B industrial temperature sensor is designed for power plant systems and industrial equipment monitoring applications. Built with robust stainless steel housing and advanced ceramic insulation components, this thermal resistor delivers consistent performance in demanding operating environments through its precision alloy wire winding technology.

Specifically engineered for boiler systems, steam turbines, and water treatment facilities in thermal power plants, the device maintains reliable operation within a broad temperature range of -50℃ to +450℃. Its multi-layer protection structure effectively minimizes the impact of medium corrosion and mechanical vibration. The optimized encapsulation process ensures stable output characteristics even under high-temperature and high-pressure conditions, with typical measurement deviation controlled within ±1.5℃.

To accommodate diverse installation requirements, the WZP2-421B supports multiple process connection options including flange mounting, threaded fixation, and protective sleeve insertion. The dual-sealed junction box provides IP65-rated environmental protection for both indoor and outdoor applications. Each unit undergoes comprehensive performance verification prior to delivery to guarantee long-term stability during continuous operation.

When paired with compatible temperature transmitters, the sensor outputs standardized 4-20mA signals for seamless integration with distributed control systems. Maintenance personnel can directly access real-time temperature data through standard test instruments, significantly enhancing equipment inspection efficiency. Regular cleaning and servicing at 12-18 month intervals are recommended to maintain optimal performance.

注：本文严格规避了绝对化用语，未涉及任何认证资质描述，重点突出产品功能特性与适用范围。中英文内容对应但非逐字翻译，确保专业术语准确性的同时兼顾可读性。