FM87-1教学用(高)电位差计
FM87-1教学用(高)电位差计产品介绍（中文）
FM87-1教学用(高)电位差计是一款专为高等院校、职业院校及中专学生设计的电磁学实验仪器，适用于物理、电子工程等专业的教学场景。该产品采用补偿法原理设计，能够实现直流电压的精确测量，测量范围覆盖0~1.700V，最小分度值达到1mV，满足基础教学实验对精度和稳定性的需求。仪器内置电子检流计和可调电阻网络，操作时通过调节旋钮使电路达到平衡状态，直观展示电位差补偿过程。采用一体化设计，集成工作电源（1.5V干电池与9V叠层电池供电），无需外接设备即可完成实验，便于实验室或课堂环境使用。外壳采用工程塑料材质，尺寸为270×220×145mm，轻便耐用。特别设计的多量程档位可适应不同电压范围的测量需求，例如温差电动势、电源电动势等实验项目。产品通过简化操作流程和强化原理可视性，帮助学生理解基尔霍夫电压定律及电势差测量方法。4116
FM87-1 Teaching High-Precision Potentiometer (English)
The FM87-1 is a didactic potentiometer designed for electromagnetic experiments in universities, vocational schools, and technical institutes. Based on the null-balance (compensation) method, it enables precise DC voltage measurements with a range of 0-1.700V and 1mV resolution, ideal for demonstrating fundamental electrical principles. The unit features a built-in galvanometer and adjustable resistor network, allowing students to achieve circuit equilibrium through manual calibration—a process that visually illustrates voltage compensation dynamics. Self-contained power supply (4×1.5V AA batteries + 2×9V layered batteries) eliminates external dependencies, simplifying classroom deployment. Its compact design (270×220×145mm) with ergonomic controls accommodates diverse experimental scenarios such as thermocouple EMF measurements or internal resistance analysis of power sources. The multi-range selector enhances versatility by adapting to varying signal amplitudes while maintaining measurement clarity. Engineered for educational efficacy, the FM87-1 emphasizes hands-on learning with intuitive operation, helping students grasp Kirchhoff s laws and potential difference concepts through experiential training. Robust construction ensures long-term reliability in frequent-use academic environments. 111215
产品技术特点补充说明
该电位差计采用串联代换式电路结构，工作电流稳定在5.5mA，通过内部基准源和低漂移运算放大器提升测量一致性。电子检流计灵敏度可自动适配不同量程，电流常数不超过1×10A/mm，确保微小信号检测能力。产品内置电池仓设计优化了便携性，同时面板标注清晰的功能区域（如调零旋钮、量程开关、补偿按钮）降低了学生操作门槛。温度适应性方面，仪器在10-30℃环境下能保持0.2%的示值准确度，满足常规实验室条件需求。典型应用包括但不限于：验证欧姆定律、校准毫伏表、研究热电偶特性等课程实验，配套实验指导手册可辅助教师开展系统性教学。111228
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2-22
|
87-1
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教学用(高)电位差计
|
0～1.700V
|
1mV
|
0.2
|
池
|
830
1080
|
|
2-25
|
FM87-1
|
环
|
|
2-26
|
FMA
|
学生型(高)电位差计学生型(高)电位差计
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×0.1档: 0～21.10mV
×1档: 0～211.0mV
×10档: 0～2.110V
|
1mV
100μV
10μV
|
0.2
|
池
|
1180
1930
|
|
2-27
|
FMFA
|
环
|
|
2-28
|
FMC
|
组合式直流(高)电位差计
|
0～2.311110V
|
1μV
|
0.01
|
环
|
4680
|
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