FM－QR2被测(四端)电阻箱
产品概述
FM-QR2被测(四端)电阻箱是一款专为实验实训设计的低阻值电阻测量设备，采用四端结构设计，有效消除引线电阻和接触电阻对测量结果的影响。该产品适用于教学实验、科研测试等场景，能够提供稳定可靠的电阻值输出。12
技术特点
FM-QR2电阻箱采用精密电阻元件和优质接触材料，确保长期使用后接触电阻变化较小。产品具有12档可调阻值范围，覆盖0.001Ω至10Ω的低阻值区间，并包含3档盲测功能，方便进行教学演示和学生实验操作。电阻支座采用高绝缘材料，具有良好的电气绝缘性能。34
产品功能
该电阻箱主要用于直流电路中作为精密可调电阻使用，也可作为已知电阻值标准。四端结构设计使其特别适合测量低阻值电阻，能够满足各类电学实验中对低阻值测量的需求。产品结构紧凑，操作简便，通过旋转开关即可快速选择所需电阻值。612
应用领域
FM-QR2电阻箱广泛应用于高等院校物理实验、电工电子实验等教学场景，也可用于科研单位的精密测量工作。产品能够帮助学生理解四端测量法的原理，掌握低阻值测量的关键技术，是电学实验教学的重要辅助工具。13
Product Overview
The FM-QR2 four-terminal resistance box is a low-resistance measurement device specially designed for experimental training. Its four-terminal structure effectively eliminates the influence of lead resistance and contact resistance on measurement results. This product is suitable for teaching experiments and scientific research testing, providing stable and reliable resistance value output.24
Technical Features
The FM-QR2 resistance box adopts precision resistance components and high-quality contact materials to ensure minimal change in contact resistance after long-term use. It features 12 adjustable resistance ranges covering low resistance values from 0.001Ω to 10Ω, including 3 blind test positions for teaching demonstrations and student experiments. The resistance support uses high-insulation materials with excellent electrical insulation performance.36
Functional Description
This resistance box is mainly used as a precision adjustable resistor in DC circuits and can also serve as a known resistance standard. The four-terminal design makes it particularly suitable for measuring low resistance values, meeting various requirements in electrical experiments. With compact structure and simple operation, users can quickly select the desired resistance value by rotating the switch.1216
Application Fields
The FM-QR2 resistance box is widely used in physics experiments at universities and colleges, as well as in electrical and electronic experiments. It can also be used for precision measurement work in scientific research institutions. This product helps students understand the principle of four-terminal measurement method and master key techniques for low resistance measurement, making it an important auxiliary tool for electrical experiment teaching.13
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被 测 电 阻 箱( 用于实验实训 )
|
|
3-58
|
FM—QR1
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1
|
被测(二端)电阻箱
|
中阻，21档20Ω—5.6MΩ,含盲测5档
|
2
|
600
|
|
3-59
|
FM—QR2
|
1
|
被测(四端)电阻箱
|
低阻, 12档0.001—10Ω，含盲测3档
|
2
|
700
|
|
3-60
|
FM—QR3
|
1
|
被测(二端)电阻箱
|
高阻，5档10M-10GΩ。
|
10
|
500
|
|
3-61
|
CMP-RD
|
|
被测电阻/二级管盒
|
中阻3只，二极管2只，用于教学
|
5
|
220
|
|
3-62
|
CMP-EL
|
|
被测电子元件盒
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晶体管、集成块等，用于教学
|
|
220
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