ZX21G旋轉(zhuǎn)式電阻箱
產(chǎn)品概述
ZX21G旋轉(zhuǎn)式電阻箱是一款專為電學測量和實驗設(shè)計的精密儀器，適用于學校、工廠及科研單位的電氣實驗室。該產(chǎn)品采用旋轉(zhuǎn)開關(guān)結(jié)構(gòu)，能夠精確調(diào)節(jié)電阻值，滿足直流或低頻交流電路中的電阻需求。其核心特點是具有較低的零值電阻（30±5mΩ）和穩(wěn)定的接觸性能，確保測量結(jié)果的可靠性。電阻箱可在0-10kHz音頻范圍內(nèi)使用，頻率引起的變差小于0.1%，適合對精度要求較高的實驗場景。16
技術(shù)特點
ZX21G旋轉(zhuǎn)式電阻箱的阻值調(diào)節(jié)范圍覆蓋0～1.111110GΩ，通過多組旋鈕實現(xiàn)步進式調(diào)節(jié)，操作簡便直觀。產(chǎn)品采用優(yōu)質(zhì)材料制造，內(nèi)部電阻元件排列緊湊，整體結(jié)構(gòu)輕便（約1.3公斤），尺寸為200×150×110mm，便于攜帶和實驗室布局。電氣性能方面，其絕緣電阻不小于1000兆歐，并能承受50Hz、2000V交流電壓的耐壓測試，確保使用安全。此外，電阻箱設(shè)計考慮了環(huán)境適應(yīng)性，推薦在溫度+10℃～+35℃、相對濕度30%～80%的環(huán)境中使用。111
應(yīng)用場景
該電阻箱廣泛應(yīng)用于電橋測量、電路調(diào)試、教學演示及科研實驗等領(lǐng)域。在直流電路中，它可作為可調(diào)電阻或電橋橋臂使用；在低頻交流電路中，其低電感特性（零值電感≤2μH）減少了頻率對測量的影響。用戶可通過接線柱靈活連接，尤其在小電阻值調(diào)節(jié)時，建議將導(dǎo)線接入“0”和低阻值端子以減小引線誤差。產(chǎn)品適用于需要穩(wěn)定阻值輸出的場合，如傳感器校準、電子元件測試等。68
使用與維護
為確保長期性能，建議定期清潔旋鈕觸點并避免超負荷使用（電流不超過額定值）。使用前需旋轉(zhuǎn)各組旋鈕以穩(wěn)定接觸，測量時優(yōu)先采用直流電源并等待讀數(shù)穩(wěn)定。存放時應(yīng)置于干燥、無腐蝕性氣體的環(huán)境中，避免陽光直射或機械撞擊。隨產(chǎn)品提供的說明書詳細介紹了操作步驟和維護要點，幫助用戶充分發(fā)揮儀器功能。110
Product Overview
The ZX21G rotary resistance box is a precision instrument designed for electrical measurements and experiments, widely used in school laboratories, industrial facilities, and research institutions. Featuring a rotary switch mechanism, it allows accurate resistance adjustment in DC or low-frequency AC circuits. Key advantages include low residual resistance (30±5mΩ) and stable contact performance, ensuring reliable results. With a frequency range of 0-10kHz and minimal deviation (<0.1%), it suits high-precision applications.16
Technical Features
This model offers a resistance range of 0～1.111110GΩ through step-by-step knob adjustments, combining user-friendly operation with compact design (200×150×110mm, 1.3kg). High-quality materials and optimized internal layout enhance durability. Its insulation resistance exceeds 1000MΩ, and it withstands 2000V AC at 50Hz for safety compliance. Recommended operating conditions are temperatures +10℃～+35℃ and relative humidity 30%～80%.111
Applications
Ideal for bridge circuits, circuit debugging, and educational demonstrations, the ZX21G serves as an adjustable resistor or bridge arm in DC systems. Low inductance (≤2μH) minimizes frequency interference in AC measurements. Terminal flexibility supports small-resistance adjustments by connecting to "0" and low-value terminals. Typical uses include sensor calibration and component testing where stable resistance output is critical.68
Usage & Maintenance
Regular maintenance involves cleaning contacts and avoiding overcurrent. Rotate knobs before use to stabilize connections, and allow sufficient stabilization time during DC measurements. Store in dry, non-corrosive environments away from direct sunlight or physical impacts. The included manual provides detailed guidance for optimal performance.110
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直流電阻箱(多值可調(diào))
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序號
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型 號
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開關(guān)數(shù)
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名 稱
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示值范圍Ω
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小步進Ω
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準確度%
|
出廠價￥
|
|
3-1
|
ZX21
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6
|
旋轉(zhuǎn)式電阻箱
|
0～99999.9
|
0.1
|
0.1
|
300
|
|
3-2
|
ZX21a
|
6
|
旋轉(zhuǎn)式電阻箱
|
0～111111.0
|
0.1
|
0.1
|
600
|
|
3-3
|
ZX21b
|
6
|
旋轉(zhuǎn)式電阻箱
|
0～99999.9
|
0.1
|
0.1
|
600
|
|
3-4
|
ZX21c
|
6
|
旋轉(zhuǎn)式電阻箱
|
0～11111.10
|
0.01
|
0.1
|
800
|
|
3-5
|
ZX21d
|
6
|
旋轉(zhuǎn)式電阻箱
|
0～1.111110M
|
1
|
0.5
|
800
|
|
3-6
|
ZX21e
|
6
|
旋轉(zhuǎn)式電阻箱
|
0～11.11110M
|
10
|
1
|
800
|
|
3-7
|
ZX21f
|
6
|
旋轉(zhuǎn)式電阻箱
|
0～111.1110M
|
100
|
2
|
1000
|
|
3-8
|
ZX21g
|
6
|
旋轉(zhuǎn)式電阻箱
|
0～1.111110G
|
1000
|
5
|
1200
|
|
3-9
|
ZX25a
|
6
|
開關(guān)式直流電阻箱
|
0．01～11111.11
|
0.01
|
0.02
|
1320
|
|
3-10
|
ZX35
|
3
|
旋轉(zhuǎn)式電阻箱
|
0～1110
|
1
|
0.1
|
510
|
|
3-11
|
ZX36
|
4
|
旋轉(zhuǎn)式電阻箱
|
0～9999
|
1
|
0.2
|
280
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