赛宝精密交直流电阻箱SB2025
价格:电议
地区:江苏省
电 话:86 0510 83889366
手 机:13706193166
传 真:86 0510 83897366
产品品牌:
CEPREI
产品型号:
SB2025

品牌CEPREI产品型号SB2025
测量范围0.1Ω~111.111kΩ  

1.概述

    SB2025型精密十进位交/直流电阻箱采用时间常数小、温度系数低、稳定性高的精密电阻器,特别是采取了一种独特的频率补偿技术,克服了长期以来交流电阻箱频率特性差(尤其是高阻值电阻器更明显),工作频率范围窄的致命弱点。该电阻箱具有频率特性好、工作频率范围宽、性能可靠、结构新颖等优点,适用于工厂、学校和科研单位作精密交/直流电阻标准,也适于直流及低频交流电路中作精密调节电阻器。

   2.使用环境条件

   2.1参考条件

   环境温度:(20±2)℃,   相对湿度:(40%~60%)RH

                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                

   3.主要技术参数

   3.1电阻值调节范围:0.1Ω~111.111kΩ(六组十进位开关)

3.2时间常数、标称频率范围上限、工作电流及允许误差如下表1:                                        

     步进值

10kΩ

1kΩ

100Ω

10Ω

0.1Ω

时间常数(ns)*

<50

<50

<10

<10

<50

 

标称频率范围上限(kHZ

10

20

50

100

100

100

工作电流

5mA

16mA

50mA

0.16A

0.5A

1.5A

允许误差

±0.02%

±0.1%

±0.5%

*:不含零位电阻的残感

  3.3温度系数:±5×10-6/℃