QJ84數(shù)字直流(雙)電橋
產(chǎn)品概述
QJ84數(shù)字直流（雙）電橋是一種高精度電阻測量儀器，采用數(shù)字化智能技術(shù)設(shè)計，適用于金屬導(dǎo)體、導(dǎo)線、電動機(jī)繞組、變壓器繞組等低值電阻的精密測量。該產(chǎn)品結(jié)合了傳統(tǒng)凱爾文電橋的穩(wěn)定性與數(shù)字儀表的便捷性，具有測量范圍寬、分辨率高、操作簡便等特點，廣泛應(yīng)用于電線電纜、導(dǎo)電材料、科研機(jī)構(gòu)及工業(yè)檢測領(lǐng)域。儀器采用四端鈕法接入被測電阻，有效消除接觸電阻影響，確保數(shù)據(jù)準(zhǔn)確性。其LED或LCD大屏幕顯示清晰直觀，支持多檔位自動切換，測試速度快，可滿足不同場景的測量需求。136
技術(shù)特點
QJ84電橋的核心優(yōu)勢在于其高精度與智能化功能。測量范圍覆蓋0.1μΩ至20kΩ（部分型號可達(dá)2.5MΩ），分辨率最低達(dá)0.01μΩ，基本誤差限為0.05%級。內(nèi)置恒流源和自動換檔功能，可根據(jù)電阻大小動態(tài)調(diào)整測試電流（0.001mA~2A），避免手動操作的繁瑣。此外，儀器支持?jǐn)?shù)據(jù)存儲（部分型號可保存200組數(shù)據(jù)）和校準(zhǔn)功能，用戶可通過標(biāo)準(zhǔn)電阻進(jìn)行定期校驗，確保長期穩(wěn)定性。外殼設(shè)計緊湊（典型尺寸265mm×110mm×295mm），重量約2.5kg，適合實驗室和現(xiàn)場使用。248
應(yīng)用場景
該電橋是電線電纜行業(yè)檢測芯線電阻的理想工具，也可用于電力設(shè)備（如變壓器、電機(jī)）的繞組電阻測試。其抗干擾能力強，適用于存在電磁干擾的工業(yè)環(huán)境。部分型號支持電池供電（如DC9V或DC12V），便于無交流電源的戶外作業(yè)。針對感性負(fù)載測量，產(chǎn)品內(nèi)置多重保護(hù)機(jī)制，可有效防止反電勢損壞設(shè)備，提升安全性。5711
Product Overview
The QJ84 Digital DC (Double) Bridge is a high-precision resistance measurement instrument designed with digital intelligence technology. It is suitable for precise measurement of low-value resistances in metal conductors, wires, motor windings, and transformer windings. Combining the stability of traditional Kelvin bridges with the convenience of digital meters, it features a wide measurement range, high resolution, and user-friendly operation, making it widely used in wire and cable industries, conductive materials, research institutions, and industrial testing. The four-terminal connection method eliminates contact resistance interference, ensuring data accuracy. The large LED or LCD screen provides clear readings, and multi-range auto-switching enhances testing efficiency for diverse scenarios.169
Technical Features
The QJ84 bridge excels in precision and smart functionality. Its measuring range spans 0.1μΩ to 20kΩ (extendable to 2.5MΩ in some models) with a resolution as low as 0.01μΩ and a basic error limit of 0.05%. Equipped with a built-in constant current source and auto-ranging, it dynamically adjusts test currents (0.001mA~2A) based on resistance values, eliminating manual adjustments. Additional features include data storage (up to 200 groups in certain models) and calibration via standard resistors for long-term stability. The compact design (typical size 265mm×110mm×295mm) and lightweight (~2.5kg) suit both lab and field applications.2412
Applications
This bridge is ideal for wire and cable core resistance testing and electrical equipment (e.g., transformers, motors) winding measurements. Its strong anti-interference capability adapts to industrial environments with electromagnetic noise. Battery-powered models (e.g., DC9V/12V) support outdoor operations without AC power. For inductive loads, built-in multi-protection mechanisms prevent damage from back EMF, enhancing operational safety.5714
QJ84數(shù)字直流(雙)電橋
的詳細(xì)介紹
| 名稱：QJ84數(shù)字直流雙臂電橋 |
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