ZX21系列旋轉(zhuǎn)式電阻箱供直流電路中作可�(diào)節(jié)阻值之�,具有較低的零值電阻,是一切實驗室最常用的儀�,適合學(xué)�、工廠和科研單位作電測量和其它實驗使�。ZX21系列旋轉(zhuǎn)式電阻箱適用于周圍空氣溫�+10℃~+35℃及相對濕度30~80%時使��
主要技�(shù)指標(biāo)�
�1 ZX21系列電阻�主要技�(shù)指標(biāo)一覽表
示�
Ω
型號
|
×
100M
|
×
10M
|
×
1M
|
×
100k
|
×
10k
|
×
1k
|
×
100
|
×
10
|
×
1
|
×
0.1
|
×
0.01
|
ZX21
|
—
|
—
|
—
|
—
|
0.1
|
0.1
|
0.5
|
1
|
2
|
5
|
—
|
ZX21a
|
—
|
—
|
—
|
—
|
0.1
|
0.1
|
0.1
|
0.5
|
1
|
2
|
—
|
2X21b
|
—
|
—
|
—
|
—
|
0.1
|
0.1
|
0.1
|
0.5
|
1
|
2
|
—
|
ZX21c
|
—
|
—
|
—
|
—
|
—
|
0.1
|
0.1
|
0.5
|
1
|
2
|
5
|
ZX21d
|
—
|
—
|
—
|
0.5
|
0.1
|
0.1
|
0.5
|
1
|
2
|
—
|
—
|
ZX21e
|
—
|
—
|
1
|
0.5
|
0.1
|
0.1
|
0.5
|
1
|
—
|
—
|
—
|
ZX21f
|
—
|
2
|
1
|
0.5
|
0.1
|
0.1
|
0.5
|
|
|
|
|
ZX21g
|
5
|
2
|
1
|
0.5
|
0.1
|
0.1
|
|
|
|
|
|
電流≤(A�
|
60
μ
|
180
μ
|
0.6
m
|
1.8
m
|
6
m
|
18
m
|
60
m
|
180
m
|
0.6
|
1.5
|
3
|
1、調(diào)節(jié)范圍�
ZX21� (0~9�×�0.1~10k�Ω �0~99.9999 kΩ
ZX21a:�0~10�×�0.1~10k�Ω�0~111.1110 kΩ
ZX21b:(0~9�×�0.1~10k�Ω �0~99.9999 kΩ
ZX21c:(0~10�×�0.01~1k�Ω�0~11.11110 kΩ
ZX21d:(0~10�×�1~100k�Ω�0~1.111110MΩ
ZX21e:(0~10�×�10~1M�Ω �0~11.11110MΩ
ZX21f:(0~10�×�100~10M�Ω �0~111.1110MΩ
ZX21g:(0~10�×�1k~100M�Ω �0~1.111110GΩ
2、零值電阻:30±5mΩ
3、電阻箱的基本誤差如下表1�(guī)定:
4、每檔電阻容許通過電流見表1�
5、電阻箱電路與外殼之間的絕緣強度,經(jīng)得住頻率�50赫茲�2000伏交流電的作用,歷時1分鐘�
6、電阻箱電路與外殼之間的絕緣電阻不少�1000兆歐�
7、電阻箱重量�1.3公斤;尺度為200×150×110mm