ZX21G旋转式电阻箱
产品概述
ZX21G旋转式电阻箱是一款专为电学测量和实验设计的精密仪器，适用于学校、工厂及科研单位的电气实验室。该产品采用旋转开关结构，能够精确调节电阻值，满足直流或低频交流电路中的电阻需求。其核心特点是具有较低的零值电阻（30±5mΩ）和稳定的接触性能，确保测量结果的可靠性。电阻箱可在0-10kHz音频范围内使用，频率引起的变差小于0.1%，适合对精度要求较高的实验场景。16
技术特点
ZX21G旋转式电阻箱的阻值调节范围覆盖0～1.111110GΩ，通过多组旋钮实现步进式调节，操作简便直观。产品采用优质材料制造，内部电阻元件排列紧凑，整体结构轻便（约1.3公斤），尺寸为200×150×110mm，便于携带和实验室布局。电气性能方面，其绝缘电阻不小于1000兆欧，并能承受50Hz、2000V交流电压的耐压测试，确保使用安全。此外，电阻箱设计考虑了环境适应性，推荐在温度+10℃～+35℃、相对湿度30%～80%的环境中使用。111
应用场景
该电阻箱广泛应用于电桥测量、电路调试、教学演示及科研实验等领域。在直流电路中，它可作为可调电阻或电桥桥臂使用；在低频交流电路中，其低电感特性（零值电感≤2μH）减少了频率对测量的影响。用户可通过接线柱灵活连接，尤其在小电阻值调节时，建议将导线接入“0”和低阻值端子以减小引线误差。产品适用于需要稳定阻值输出的场合，如传感器校准、电子元件测试等。68
使用与维护
为确保长期性能，建议定期清洁旋钮触点并避免超负荷使用（电流不超过额定值）。使用前需旋转各组旋钮以稳定接触，测量时优先采用直流电源并等待读数稳定。存放时应置于干燥、无腐蚀性气体的环境中，避免阳光直射或机械撞击。随产品提供的说明书详细介绍了操作步骤和维护要点，帮助用户充分发挥仪器功能。110
Product Overview
The ZX21G rotary resistance box is a precision instrument designed for electrical measurements and experiments, widely used in school laboratories, industrial facilities, and research institutions. Featuring a rotary switch mechanism, it allows accurate resistance adjustment in DC or low-frequency AC circuits. Key advantages include low residual resistance (30±5mΩ) and stable contact performance, ensuring reliable results. With a frequency range of 0-10kHz and minimal deviation (<0.1%), it suits high-precision applications.16
Technical Features
This model offers a resistance range of 0～1.111110GΩ through step-by-step knob adjustments, combining user-friendly operation with compact design (200×150×110mm, 1.3kg). High-quality materials and optimized internal layout enhance durability. Its insulation resistance exceeds 1000MΩ, and it withstands 2000V AC at 50Hz for safety compliance. Recommended operating conditions are temperatures +10℃～+35℃ and relative humidity 30%～80%.111
Applications
Ideal for bridge circuits, circuit debugging, and educational demonstrations, the ZX21G serves as an adjustable resistor or bridge arm in DC systems. Low inductance (≤2μH) minimizes frequency interference in AC measurements. Terminal flexibility supports small-resistance adjustments by connecting to "0" and low-value terminals. Typical uses include sensor calibration and component testing where stable resistance output is critical.68
Usage & Maintenance
Regular maintenance involves cleaning contacts and avoiding overcurrent. Rotate knobs before use to stabilize connections, and allow sufficient stabilization time during DC measurements. Store in dry, non-corrosive environments away from direct sunlight or physical impacts. The included manual provides detailed guidance for optimal performance.110
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直流电阻箱(多值可调)
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序号
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型 号
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开关数
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名 称
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示值范围Ω
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小步进Ω
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准确度%
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出厂价￥
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3-1
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ZX21
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6
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旋转式电阻箱
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0～99999.9
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0.1
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0.1
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300
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3-2
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ZX21a
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6
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旋转式电阻箱
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0～111111.0
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0.1
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0.1
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600
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|
3-3
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ZX21b
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6
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旋转式电阻箱
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0～99999.9
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0.1
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0.1
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600
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|
3-4
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ZX21c
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6
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旋转式电阻箱
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0～11111.10
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0.01
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0.1
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800
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3-5
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ZX21d
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6
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旋转式电阻箱
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0～1.111110M
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1
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0.5
|
800
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3-6
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ZX21e
|
6
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旋转式电阻箱
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0～11.11110M
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10
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1
|
800
|
|
3-7
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ZX21f
|
6
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旋转式电阻箱
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0～111.1110M
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100
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2
|
1000
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3-8
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ZX21g
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6
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旋转式电阻箱
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0～1.111110G
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1000
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5
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1200
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3-9
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ZX25a
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6
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开关式直流电阻箱
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0．01～11111.11
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0.01
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0.02
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1320
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|
3-10
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ZX35
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3
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旋转式电阻箱
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0～1110
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1
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0.1
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510
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3-11
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ZX36
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4
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旋转式电阻箱
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0～9999
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1
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0.2
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280
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