产品中文介绍：
WZPK-374S电接点双金属温度计是一款适用于工业过程温度监测与控制的精密仪表。该产品采用双金属片传感技术实现温度-机械位移转换，配合可调节电接点系统，可对设定温度阈值进行精确控制。其结构设计兼顾实用性及环境适应性，可广泛应用于石油化工、食品医药、暖通空调等领域的温度监控场景。
本产品核心组件由高精度双金属元件、精密传动机构和定制化电接点模块构成。螺旋盘绕的双金属片随温度变化产生形变位移，通过机械传动放大带动表盘指针旋转。表壳采用304不锈钢整体冲压成型，配合双层密封结构设计，使仪表具备IP65防护等级，可有效抵御粉尘侵入和水流喷溅。玻璃表盖采用5mm厚钢化玻璃，具有优良的抗冲击性能。
温度测量范围覆盖-50℃至500℃区间，根据用户需求可提供不同量程定制方案。指针式表盘采用荧光涂层工艺，确保在低照度环境下仍可清晰读数。电接点系统配备高灵敏银合金触点，接触电阻稳定在50mΩ以下，支持最高250V交流电压或380V直流电压的电路控制需求。接点动作重复精度达到±1% F.S.，有效保障控制系统的可靠性。
产品安装方式灵活多样，支持轴向/径向安装、法兰固定或螺纹连接等多种形式。表体底部预留标准过程接口，可适配G1/2、NPT 1/2等多种工业管螺纹规格。为适应复杂工况环境，可选配散热管、冷凝弯管等辅助配件，在高温或强震动场景中保持测量精度。
使用过程中建议定期进行示值校验，保持表体清洁避免介质结晶影响传动机构。接触点部位建议每5000次动作后实施触点清洁维护。本产品不适用于强腐蚀性介质或剧烈机械振动的极端环境，安装时需避开设备共振频率区域。
产品英文介绍：
The WZPK-374S Bimetal Thermometer with Electrical Contact is a precision instrument designed for industrial temperature monitoring and process control applications. Utilizing bimetal strip sensing technology, this device achieves accurate temperature measurement through mechanical displacement conversion. The adjustable electrical contact system enables precise temperature threshold control, making it suitable for diverse industrial scenarios including petrochemical processing, food & pharmaceutical production, and HVAC systems.
This thermometer features a robust construction with a 304 stainless steel casing manufactured through integral stamping process. The hermetically sealed structure provides IP65 protection rating, effectively resisting dust ingress and water spray. The 5mm tempered glass window ensures excellent impact resistance while maintaining clear visibility. The fluorescent-coated dial facilitates easy reading under low-light conditions.
With a temperature measurement range spanning from -50℃ to 500℃, the device offers customizable scale ranges to meet specific application requirements. The electrical contact system employs silver alloy contacts with stable resistance below 50mΩ, capable of switching circuits up to 250V AC or 380V DC. The repeatability accuracy of contact action achieves ±1% F.S., ensuring reliable control system operation.
Installation flexibility is ensured through multiple mounting options including axial/radial orientation, flange fixation, and threaded connections. Standard process interfaces at the base accommodate various industrial thread specifications such as G1/2 and NPT 1/2. Optional accessories like cooling fins and siphon tubes enhance performance in high-temperature or vibrating environments.
The bimetal sensing element consists of precision-wound helical strips that convert thermal expansion into rotational movement through an optimized gear amplification mechanism. This design delivers stable output with minimal hysteresis. Regular maintenance including dial calibration and contact cleaning after 5,000 operations is recommended to maintain optimal performance. The product should be avoided in strongly corrosive media or environments with excessive mechanical vibration.
