【中文介绍】
FMQJ23b直流三端电阻桥是一款专为精密电阻测量设计的实验室级检测设备，采用三端式结构设计有效降低接触电阻和导线电阻对测量结果的影响。该设备内置高稳定度恒流源模块与数字化处理单元，可在0.1mΩ-10kΩ范围内实现±0.02%的基础测量精度，特别适用于半导体材料、精密传感器、电力电子元件等领域的阻值分析需求。
本产品通过独特的温度补偿系统，在15℃-35℃环境温度范围内保持测量稳定性，温度漂移系数小于5ppm/℃，确保长时间工作状态下的数据可靠性。接触端子采用镀金工艺处理，配合四线制测量模式，有效消除接触电势带来的误差。面板布局采用人机工程学设计，配备240×128点阵液晶显示屏，支持测量数据实时显示和趋势曲线查看功能。
在工业现场应用中，FMQJ23b配备RS485通讯接口，可便捷接入自动化测试系统。设备内置12组用户自定义参数存储单元，支持快速调用常用测量模式。双层屏蔽机箱结构配合滤波电路设计，使产品在复杂电磁环境中仍能保持优异抗干扰性能。操作界面提供中英双语切换功能，满足不同使用者的操作习惯需求。
【English Introduction】
The FMQJ23b DC Three-Terminal Resistance Bridge is a laboratory-grade testing instrument specifically designed for precision resistance measurement. Employing a three-terminal structure, it effectively minimizes the impact of contact resistance and lead resistance on measurement results. Equipped with a high-stability constant current source module and digital processing unit, the device achieves a basic measurement accuracy of ±0.02% within the 0.1mΩ-10kΩ range, making it particularly suitable for resistance analysis in semiconductor materials, precision sensors, and power electronic components.
The product incorporates an innovative temperature compensation system that maintains measurement stability within ambient temperatures of 15℃-35℃, with temperature drift coefficient controlled below 5ppm/℃. Gold-plated terminals combined with four-wire measurement mode effectively eliminate contact potential errors. The ergonomic control panel features a 240×128 dot matrix LCD display, providing real-time measurement data visualization and trend curve analysis capabilities.
For industrial applications, the FMQJ23b comes with RS485 communication interface for seamless integration into automated test systems. Its 12 user-defined parameter storage units allow quick access to frequently used measurement modes. The double-shielded chassis structure coupled with advanced filtering circuit design ensures excellent anti-interference performance in complex electromagnetic environments. The multilingual interface (Chinese/English) accommodates diverse operational preferences.
This instrument demonstrates particular value in scientific research institutions and quality control laboratories, where it provides reliable technical support for material conductivity analysis and component performance verification. Simplified calibration procedures and modular circuit design significantly reduce maintenance requirements, while the compact form factor (320×280×120mm) and lightweight construction (4.8kg) enhance equipment portability for field measurement tasks.
