QJ31直流單雙臂電橋產(chǎn)品介紹（中文）
QJ31型直流單雙臂電橋是一款多功能電阻測量儀器，適用于實(shí)驗(yàn)室、工業(yè)現(xiàn)場及教學(xué)等場景。該設(shè)備采用經(jīng)典電橋原理設(shè)計(jì)，結(jié)合現(xiàn)代電子技術(shù)進(jìn)行優(yōu)化改進(jìn)，具備較高的測量精度和良好的環(huán)境適應(yīng)性，能夠滿足不同場景下的電阻檢測需求。
本產(chǎn)品支持單臂電橋與雙臂電橋兩種工作模式自由切換，可根據(jù)被測電阻的阻值范圍選擇合適的測量方式。單臂模式適用于10μΩ至11.11kΩ的中低阻值測量，雙臂模式可有效消除導(dǎo)線電阻對測量結(jié)果的影響，特別適合1μΩ至111.1Ω范圍的精密測量。測量系統(tǒng)內(nèi)置精密比例臂和可調(diào)標(biāo)準(zhǔn)電阻，配合靈敏檢流計(jì)，確保測量結(jié)果穩(wěn)定可靠。
設(shè)備采用模塊化設(shè)計(jì)，操作面板布局科學(xué)合理，功能旋鈕與接線端子標(biāo)識清晰。旋轉(zhuǎn)式量程開關(guān)配備多檔位選擇，配合四位半數(shù)字顯示屏，可實(shí)現(xiàn)直觀的測量數(shù)值讀取。內(nèi)部電路經(jīng)過特殊抗干擾處理，在復(fù)雜電磁環(huán)境下仍能保持穩(wěn)定工作狀態(tài)。外殼選用工程防護(hù)材料，兼顧輕量化與耐用性需求，便于實(shí)驗(yàn)室固定安裝或現(xiàn)場移動(dòng)使用。
該電橋可廣泛應(yīng)用于電力設(shè)備維護(hù)、電子元器件檢測、材料電阻率分析等領(lǐng)域。在變壓器繞組測試、開關(guān)接觸電阻測量、精密分流器校準(zhǔn)等工作中表現(xiàn)優(yōu)異。儀器配備溫度補(bǔ)償功能，有效降低環(huán)境溫度波動(dòng)對測量精度的影響，確保在10℃-35℃工作溫度范圍內(nèi)保持優(yōu)良性能。
（英文介紹）QJ31 DC Single/Double Bridge Product Introduction
The QJ31 DC Single/Double Bridge is a precision resistance measuring instrument designed for laboratory, industrial and educational applications. Integrating traditional bridge principles with modern circuit design, this device delivers reliable measurement performance with enhanced operational stability.
This dual-mode instrument features selectable single-arm and double-arm bridge configurations, providing flexible measurement solutions for various resistance ranges. The single-arm mode covers 10μΩ to 11.11kΩ measurements, while the double-arm configuration minimizes lead resistance effects for high-precision 1μΩ to 111.1Ω measurements. Its precision ratio arm and adjustable standard resistors work in conjunction with a sensitive galvanometer to ensure measurement accuracy.
The user-friendly interface includes clearly labeled terminals and a rotary range selector with multiple measurement scales. The four-and-a-half-digit LED display ensures clear readability, while the optimized circuit design provides stable operation in electromagnetically challenging environments. The lightweight yet durable enclosure combines portability with robust construction for both stationary and mobile applications.
Ideal for power equipment maintenance, electronic component testing, and material resistivity analysis, this instrument excels in transformer winding measurements, contact resistance testing, and shunt calibration tasks. The built-in temperature compensation mechanism effectively counteracts environmental temperature variations, maintaining measurement consistency within 10℃ to 35℃ operational range. Simplified operation procedures and maintenance requirements make it suitable for both professional technicians and educational purposes.
