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SB2012精密交直流電阻箱

SB2012精密交直流電阻箱適用場(chǎng)合-> Suitable Situation ->

適用于工廠、學(xué)校和科研單位作精密測(cè)量及精密交/直流電阻標(biāo)準(zhǔn)?！?/span>
It is suitable to be used as precise measuring standard and precise AC/DC resistance standard for factories, colleges, and research institutes.

SB2012精密交直流電阻箱詳細(xì)指標(biāo)-> Detail Specification->

1．電阻范圍Resistance range：1Ω~1.11111MΩ;
Resistance range：1Ω~1.11111MΩ;
　2．zui小步進(jìn)值Minimum step value：1Ω；
Minimum step value：1Ω；
　3．額定功率Nominal power: 0.25W;
Nominal power: 0.25W;
　4．溫度系數(shù)Temperature coefficien：±5×10^-6/℃；
emperature coefficien：±5×10^-6/℃
　5．其他參數(shù)Other parameters：
Other parameters

步進(jìn)電阻值	100kΩ	10kΩ	1kΩ	100Ω	10Ω	1Ω
時(shí)間常數(shù)（10^-8 s）	100	5	5	1	1	5
測(cè)試頻率上限（kHz）	2	10	20	50	100	100
zui大允許誤差	±0.02%				0.1%
年變化	± 0.01%				± 0.05%

步進(jìn)電阻值Step resistance value 100kΩ 10kΩ 1kΩ 100Ω 10Ω 1Ω
Step resistance value 100kΩ 10kΩ 1kΩ 100Ω 10Ω 1Ω
　　時(shí)間常數(shù)（10^-8）Time constant 100 5 5 1 1 1 5
Time constant（10^-8） 100 5 5 1 1 1 5

測(cè)試頻率上限（kHz） Measuring frequency upper limit 2 10 20 50 100 100
    Measuring frequency upper limit（kHz） 2 10 20 50 100
　　zui大允許誤差*Maximum permissible error ±0.02% ±0.1%
    Maximum permissible error ±0.02% ±0.1%
　　年變化Annual variation ±0.01% ±0.05%
    Annual variation ±0.01% ±0.05%
　*：電阻箱的工作頻率等于或低于測(cè)試頻率上*的zui大允許誤差。
The working frequency is equal to or less than the permissible error limit of measurement frequency of the resistance box..

SB2012精密交直流電阻箱技術(shù)規(guī)格-> Technical specification->

SB2012型精密交/直流電阻箱由六個(gè)十進(jìn)位盤構(gòu)成，采用時(shí)間常數(shù)小、穩(wěn)定性高的精密電阻器，*的屏蔽補(bǔ)償措施及精密密封開關(guān)。具有　頻率特性好、穩(wěn)定性高、性能可靠、開關(guān)接觸電阻變差小等*優(yōu)點(diǎn)
SB2012 Precise AC/DC Resistance Box is composed of 6 decade scales and precise resistors, whose time constant is little and stability is very high. It adopts special screen compensation measure and precise seal switch. It also possesses many special characteristics, such as good frequency characteristic, good stability, reliable performance, and variation differences are very little when switch touches resistance.

SB2012精密交直流電阻箱