QJ23b直流三端电阻桥
产品概述
QJ23b直流三端电阻桥是一款高性能的便携式电阻测量仪器，采用惠斯登电桥线路设计，具有内附指零仪和内置电源系统，适用于实验室、车间及野外现场等多种环境下的电阻测量需求。该产品独创三端法测量技术，有效消除引线电阻带来的误差，显著提升小电阻测量精度，同时支持远距离电阻测量。仪器提供市电型和电池型两种供电模式，满足不同场景的使用需求。11520
技术特点
仪器配备多档量程倍率（×0.001至×1000），覆盖1Ω至11.11MΩ的宽泛测量范围，基本误差控制在±0.1%至±0.5%之间。比较臂采用四个十进盘结构，可调电阻范围达0-9999Ω，最小步进1Ω。内置电子放大式指零仪具有高灵敏度和抗过载能力，操作时无需复杂调零程序。所有线绕电阻均采用高稳定性锰铜电阻丝无感绕制，确保测量数据长期稳定可靠。21416
产品优势
相比传统电阻测量设备，QJ23b通过三端测量法有效解决了接触电阻和引线电阻对低阻值测量的干扰问题。仪器结构紧凑（270×230×140mm），重量不足2kg，金属外壳设计兼顾耐用性与电磁屏蔽性能。人性化的操作界面包含量程倍率旋钮、测量盘和双按钮控制（电源键B/检流计键G），配合明确的接线端钮标识，即使非专业人员也能快速上手。11519
应用领域
该设备广泛应用于金属导体电阻率测定、变压器绕组直流电阻检测、开关接触电阻测试等场景，特别适合电线电缆、电机电器等制造业的质量控制。在科研教育领域，可用于电路实验、材料研究等需要精确电阻测量的场合。其稳定的性能和便携特性也使其成为电力系统现场检修的理想工具。61021
Product Overview
The QJ23b DC Three-Terminal Resistance Bridge is a high-performance portable instrument for resistance measurement, featuring built-in null detector and power supply system. Based on Wheatstone bridge circuit design, it employs innovative three-terminal measurement method to eliminate lead resistance errors, significantly improving accuracy for low-resistance measurements while supporting remote resistance testing. Available in both AC-powered and battery-powered versions to accommodate diverse working environments. 11520
Technical Features
With multi-range multipliers (×0.001 to ×1000), the device covers a broad measurement range from 1Ω to 11.11MΩ, maintaining basic accuracy between ±0.1% to ±0.5%. The four-decade comparison arm provides adjustable resistance from 0-9999Ω with 1Ω minimum step. The integrated electronic null detector offers high sensitivity and overload protection, requiring no complex zeroing procedures. All wire-wound resistors use non-inductive manganin windings for long-term stability. 21416
Key Advantages
The three-terminal method effectively overcomes interference from contact/lead resistance in low-resistance measurements. Compact dimensions (270×230×140mm) and lightweight design (<2kg) with metal casing ensure portability and electromagnetic shielding. User-friendly interface includes range selector, measurement dials, and dual-operation buttons (power B/galvanometer G), with clearly marked terminals enabling quick operation by non-specialists. 11519
Applications
Ideal for measuring metal conductor resistivity, transformer winding DC resistance, and switch contact resistance in manufacturing quality control. Widely used in scientific research and education for circuit experiments and material studies requiring precise resistance data. Its stability and portability also make it suitable for power system field maintenance. 61021
QJ23b直流三端电阻桥
的详细介绍
QJ23b型
具有内附指零仪、便于携带。QJ23b独具三端法测量电阻，提高了测量小电阻的精度，可远距离测量电阻，是一种高性能的电阻测量仪，有市电型和电池型二种可供选择。
测量倍率 有效量程（Ω） 误差（%）
X0.001 1～11.11 ≤±0.5
X0.01 10～111.1 ≤±0.2
X0.1 100～1111 ≤±0.1
X1 1K～11.11K
X10 10K～111.1K
X100 100K～1111K ≤±0.2
X1000 1M～11.11M ≤±0.5
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