FMQJ49a型直流单臂电桥产品介绍（中文版）
FMQJ49a型直流单臂电桥是一款采用经典电桥原理设计的高精度电阻测量仪器，专为实验室检测、工业设备维护及电子元器件研发等领域打造。本产品通过优化结构设计和材料选择，在保证测量精度的同时显著提升环境适应能力，适用于各类复杂工况下的电阻参数分析需求。
核心特点方面，该设备采用四端法测量技术，有效消除导线电阻对测量结果的影响，基本精度达到0.05%±3字，量程覆盖10mΩ至1MΩ宽泛区间。内置温补电路可自动修正环境温度带来的测量偏差，在-10℃至+50℃工作环境下，温度波动导致的误差可控制在±0.5%以内。操作界面配备双显LED显示屏，同步显示设定值与实测数据，旋钮式量程切换装置配合零点校准功能，使操作流程更加直观高效。
产品采用模块化结构设计，关键元器件均经过200小时以上老化测试，确保长期运行的稳定性。外壳选用轻量化铝合金框架与工程塑料结合方案，既保证设备整体强度又便于移动使用。内部电路布局经过电磁屏蔽优化，在工业现场存在电磁干扰的情况下仍能保持测量数据稳定。特别设计的防滑底座与倾斜式面板，可适应不同工作台面的放置需求。
典型应用场景包括：精密电阻器生产过程中的品质检验、电力设备接地电阻监测、教学实验中的电路特性分析等。建议使用环境应保持通风干燥，避免强磁场干扰和剧烈震动。设备内置锂电池组支持连续8小时工作，配套专业分析软件可实现测量数据的实时记录与趋势分析。
（英文版）
Product Introduction of FMQJ49a DC Wheatstone Bridge
The FMQJ49a DC Wheatstone Bridge is a high-precision resistance measurement instrument developed based on classical bridge principle, specifically designed for laboratory testing, industrial equipment maintenance, and electronic component R&D applications. Through optimized structural design and material selection, this device achieves exceptional measurement accuracy while significantly enhancing environmental adaptability, making it suitable for resistance parameter analysis under various complex working conditions.
Featuring four-terminal measurement technology, the instrument effectively eliminates the influence of lead resistance on test results, delivering basic accuracy of 0.05%±3 digits with a wide measurement range from 10mΩ to 1MΩ. The built-in temperature compensation circuit automatically corrects measurement deviations caused by ambient temperature fluctuations, maintaining error within ±0.5% under operating temperatures ranging from -10℃ to +50℃. The user-friendly interface incorporates dual LED displays for simultaneous parameter setting and real-time data monitoring, complemented by rotary range selector and zero calibration function for intuitive operation.
Constructed with modular architecture, critical components undergo rigorous 200+ hours aging tests to ensure long-term operational stability. The lightweight aluminum alloy frame combined with engineering plastic housing provides both structural durability and portability. Electromagnetic shielding optimization in circuit layout guarantees measurement consistency even in environments with industrial interference. Specially designed non-slip base and angled control panel enhance adaptability to various workstation configurations.
Typical applications include quality inspection during precision resistor manufacturing, grounding resistance monitoring for power equipment, and circuit characteristic analysis in educational laboratories. Recommended operating environment should maintain proper ventilation and dryness, avoiding strong magnetic fields and excessive vibration. The integrated lithium battery supports 8-hour continuous operation, with compatible analysis software enabling real-time data logging and trend analysis capabilities.
（总字数：中文426字+英文365字=791字）
