产品中文介绍：
WZPK2-205SA型电接点双金属温度计是一款适用于工业场景的温度监测与控制设备。该产品采用双金属片传感技术，通过金属材料的热膨胀特性实现温度指示，其内置电接点装置可配合控制系统完成温度信号的自动切换与报警功能。
表壳采用全不锈钢材质，表面经喷砂工艺处理，具备良好的机械强度和耐腐蚀性。表盘采用铝氧化工艺，刻度标识清晰可见，黑色指针与白色表盘的对比设计确保在复杂光线环境下仍能快速读取数值。双层密封结构使产品防护等级达到IP65，有效防止粉尘侵入和短时水淋影响。
传感元件由特殊合金材料复合制成，在-20℃至500℃量程范围内保持稳定的线性响应特性。产品内置可调节式电接点系统，用户可通过旋钮精确设定上下限报警值，接触部件采用银镍合金材质，确保在频繁通断工况下的接触可靠性。指针轴系采用宝石轴承设计，配合精密游丝结构，使仪器在机械振动环境下仍能保持测量精度。
产品适用于石油化工、电力设备、食品加工等行业的管道及反应容器温度监控。直型轴向安装结构适配DN20及以上法兰接口，产品整体尺寸经过优化设计，便于在有限空间内完成安装调试。用户可根据需求选择径向或轴向表头朝向，温度刻度支持摄氏度与华氏度双制式标注。
产品英文介绍：
The WZPK2-205SA Bimetal Thermometer with Electrical Contact is an industrial-grade temperature monitoring solution combining mechanical indication and electrical control functions. Its operation principle relies on the differential expansion characteristics of bonded metallic strips, providing reliable temperature measurement without requiring external power supply.
Crafted with 304 stainless steel casing, the instrument features a sandblasted finish for enhanced corrosion resistance. The 100mm diameter dial incorporates luminous markings and a red pointer for improved visibility in low-light environments. The hermetically sealed construction meets IP65 protection standards, safeguarding internal components from dust ingress and water splashes.
The bimetal sensing element delivers accurate readings across a -20℃ to 500℃ range (±1.5% full scale accuracy). Adjustable SPDT electrical contacts allow users to set customized alarm thresholds via front-mounted knobs. Silver-nickel alloy contacts ensure stable switching performance under continuous operation. The jeweled movement mechanism minimizes friction loss, maintaining long-term measurement stability even in high-vibration environments.
This thermometer excels in pipeline temperature monitoring for petrochemical plants, thermal power stations, and industrial boilers. Its straight axial mounting configuration fits standard process connections from DN20 upwards. The modular design allows field adjustment of pointer orientation while maintaining measurement integrity. Optional dual-scale dials (℃/℉) accommodate international engineering specifications.
