QJ23b直流三端電阻橋
產(chǎn)品概述
QJ23b直流三端電阻橋是一款高性能的便攜式電阻測量儀器，采用惠斯登電橋線路設(shè)計，具有內(nèi)附指零儀和內(nèi)置電源系統(tǒng)，適用于實(shí)驗(yàn)室、車間及野外現(xiàn)場等多種環(huán)境下的電阻測量需求。該產(chǎn)品獨(dú)創(chuàng)三端法測量技術(shù)，有效消除引線電阻帶來的誤差，顯著提升小電阻測量精度，同時支持遠(yuǎn)距離電阻測量。儀器提供市電型和電池型兩種供電模式，滿足不同場景的使用需求。11520
技術(shù)特點(diǎn)
儀器配備多檔量程倍率（×0.001至×1000），覆蓋1Ω至11.11MΩ的寬泛測量范圍，基本誤差控制在±0.1%至±0.5%之間。比較臂采用四個十進(jìn)盤結(jié)構(gòu)，可調(diào)電阻范圍達(dá)0-9999Ω，最小步進(jìn)1Ω。內(nèi)置電子放大式指零儀具有高靈敏度和抗過載能力，操作時無需復(fù)雜調(diào)零程序。所有線繞電阻均采用高穩(wěn)定性錳銅電阻絲無感繞制，確保測量數(shù)據(jù)長期穩(wěn)定可靠。21416
產(chǎn)品優(yōu)勢
相比傳統(tǒng)電阻測量設(shè)備，QJ23b通過三端測量法有效解決了接觸電阻和引線電阻對低阻值測量的干擾問題。儀器結(jié)構(gòu)緊湊（270×230×140mm），重量不足2kg，金屬外殼設(shè)計兼顧耐用性與電磁屏蔽性能。人性化的操作界面包含量程倍率旋鈕、測量盤和雙按鈕控制（電源鍵B/檢流計鍵G），配合明確的接線端鈕標(biāo)識，即使非專業(yè)人員也能快速上手。11519
應(yīng)用領(lǐng)域
該設(shè)備廣泛應(yīng)用于金屬導(dǎo)體電阻率測定、變壓器繞組直流電阻檢測、開關(guān)接觸電阻測試等場景，特別適合電線電纜、電機(jī)電器等制造業(yè)的質(zhì)量控制。在科研教育領(lǐng)域，可用于電路實(shí)驗(yàn)、材料研究等需要精確電阻測量的場合。其穩(wěn)定的性能和便攜特性也使其成為電力系統(tǒng)現(xiàn)場檢修的理想工具。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直流三端電阻橋
的詳細(xì)介紹
QJ23b型
具有內(nèi)附指零儀、便于攜帶。QJ23b獨(dú)具三端法測量電阻，提高了測量小電阻的精度，可遠(yuǎn)距離測量電阻，是一種高性能的電阻測量儀，有市電型和電池型二種可供選擇。
測量倍率 有效量程（Ω） 誤差（%）
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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