FMQJ60教学单双臂两用电桥
FMQJ60教学单双臂两用电桥产品介绍（中文）
FMQJ60教学单双臂两用电桥是一款专为教学和实验室设计的精密测量仪器，采用凯尔文线路结构，兼具单臂电桥和双臂电桥功能。该产品适用于测量10⁻⁴Ω至111.1kΩ范围内的直流电阻，可满足金属导体电阻率、导线电阻、电机绕组电阻等多种测量需求。电桥采用惠斯通/开尔文双电路设计，配备10个量程倍率和4个十进读数盘，操作简便且测量精度较高。内置指零仪和工作电源，无需额外配件即可完成测量任务，适合大专院校、工矿企业实验室及野外工作环境使用。产品采用便携式设计，外形尺寸为290×220×130mm，重量约4kg，便于携带和移动。电桥在20±1℃参考温度下工作稳定，支持外接电源扩展功能，可适应不同场景的测量需求。138
FMQJ60 Teaching Single-Double Arm Dual-purpose Bridge (English)
The FMQJ60 is a precision measuring instrument designed for teaching and laboratory applications, featuring both single-arm and double-arm bridge functionalities based on Kelvin circuit architecture. It covers a wide measurement range from 10⁻⁴Ω to 111.1kΩ DC resistance, suitable for determining resistivity of metal conductors, wire resistance, motor winding resistance and similar applications. The device incorporates Wheatstone/Kelvin dual-circuit design with 10 range multipliers and 4 decade dials for user-friendly operation. Integrated null detector and built-in power supply enable standalone operation without additional accessories, making it ideal for educational institutions, industrial laboratories and field work. With compact dimensions of 290×220×130mm and approximate weight of 4kg, the portable design ensures easy transportation. The bridge maintains stable performance at reference temperature of 20±1℃ and supports external power supply connection for extended application scenarios. The intuitive panel layout includes functional components such as range selector knobs, measurement terminals and sensitivity adjustment controls to facilitate teaching demonstrations. 101519
产品特点与教学优势
该电桥在设计上特别注重教学实用性，面板布局直观清晰，物理模型明确，便于学生理解电桥工作原理。采用13端钮创新布局，可直接连接市电供电，无需外接大电流回路搭建。产品具有两种工作模式选择开关，可自由切换单臂/双臂电桥状态，配合不同教学实验需求。测量过程中可通过灵敏度调节旋钮逐步优化检测精度，帮助学生掌握精密测量技术要点。对于低阻值测量，产品采用四端连接法有效减小接线电阻影响，使测量结果更接近真实值。外壳采用工程塑料材质，兼顾轻量化与耐用性，适合频繁的教学演示使用。6913
Technical Features and Educational Value
The instrument emphasizes pedagogical effectiveness through logically arranged panel components that visually demonstrate bridge circuit principles. Its innovative 13-terminal configuration allows direct mains power connection without external heavy-current loop setup. The dual-mode selector switch enables seamless transition between single-arm and double-arm bridge configurations for diversified teaching experiments. During measurement procedures, the sensitivity adjustment knob permits gradual precision optimization, helping students master key techniques of accurate measurement. For low-resistance testing, four-terminal connection method significantly minimizes lead resistance interference. The durable yet lightweight engineering plastic housing withstands frequent classroom demonstrations. Additional educational benefits include independent control of power supply and null detector circuits, allowing students to practice proper measurement sequencing. The device also serves as an effective tool for comparative studies between different bridge circuit types and their respective applications. 182427
FMQJ60教学单双臂两用电桥
的详细介绍
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