ZX21e旋轉式電阻箱
產品概述
ZX21e旋轉式電阻箱是一款專為直流電路設計的精密可調電阻儀器，采用高穩(wěn)定錳銅合金線無感繞制工藝，確保電阻值的高精度和長期穩(wěn)定性。該設備通過旋轉開關實現(xiàn)阻值調節(jié)，操作簡便且接觸可靠，適用于實驗室、教育及工業(yè)領域的電學實驗與設備校準。其核心特點包括寬阻值范圍（0~11.11110MΩ）、低零值電阻（30±5mΩ）以及優(yōu)異的絕緣性能（絕緣電阻≥1000MΩ），能夠滿足多種場景下的電阻調節(jié)需求。1611
技術特點
ZX21e采用六組十進開關串聯(lián)結構，每檔電阻由精密電阻元件組成，最小步進值為10Ω，支持連續(xù)調節(jié)。電阻元件經特殊工藝處理，溫度系數(shù)低，抗老化性強，確保在10℃~35℃環(huán)境溫度下性能穩(wěn)定。設備外殼采用絕緣材料，可承受50Hz/2000V交流電壓的絕緣強度測試，安全可靠。此外，其輕量化設計（約1.3kg）和緊湊尺寸（200×150×110mm）便于攜帶與安裝。2712
應用場景
該電阻箱廣泛應用于學校物理實驗、科研機構電路研究以及工業(yè)電子設備測試。例如，在教學場景中幫助學生理解歐姆定律和分壓原理；在工廠中用于校準萬用表或直流電橋；在科研中配合其他儀器完成高精度電學測量。用戶可通過“0”和小阻值接線柱的組合，進一步減少引線電阻對微小阻值測量的影響。5815
使用與維護
使用前需旋轉各組旋鈕確保接觸穩(wěn)定，避免超過額定電流（參考各檔位限流值）。長期存放時需置于干燥、無腐蝕性氣體的環(huán)境中，定期清潔開關觸點并涂抹中性凡士林以延長壽命。注意避免劇烈震動或高溫環(huán)境，以保持性能。61218
Product Overview
The ZX21e rotary resistance box is a precision adjustable resistor designed for DC circuits, featuring manganin alloy wire wound with non-inductive technology for high stability and accuracy. With a resistance range of 0~11.11110MΩ and low residual resistance (30±5mΩ), it is ideal for educational, industrial, and research applications requiring reliable resistance adjustment. Its robust insulation (≥1000MΩ) ensures safety during operation. 11116
Key Features
Equipped with six decades of rotary switches, the ZX21e allows step-by-step adjustment (minimum 10Ω/step). The resistance elements are treated for low temperature coefficient and durability, maintaining performance within 10℃~35℃. The compact design (200×150×110mm, 1.3kg) and insulated housing (withstands 2000V AC) enhance portability and safety. 2712
Applications
Suitable for physics experiments, circuit research, and industrial calibration, such as verifying Ohm s Law in classrooms or testing electronic equipment in workshops. The "0" terminal option minimizes lead resistance effects for low-resistance measurements. Compatible with multimeters and bridges for versatile use. 5815
Usage & Maintenance
Rotate switches before use to stabilize contacts, and avoid exceeding current limits. Store in dry, non-corrosive environments. Periodic cleaning of contacts with alcohol and applying neutral grease is recommended. Avoid mechanical shocks or extreme temperatures. 61218
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