Tinsley Model 4721十进制盒设计用于在高达5000V DC的电压下检查和校准绝缘测试仪。

使用专门选择的电阻器和安装在易于读取的面板上的高质量开关，覆盖的总范围为1kΩ至1TeraΩ。

该电阻箱安装在坚固的铝制外壳中，带盖子和提手，为高阻绝缘测试仪的现场和实验室校准提供了理想的解决方案。

仪器可以提供由我们自己的内部校准实验室提供的校准证书。

The Tinsley Model 4721 decade box is designed for the checking and calibration of insulation testers at voltages of up to 5000V DC.

The total range covered is from 1 kΩ to 1TeraΩ using specially selected resistors and a high quality switch mounted on an easy to read panel.

This resistance box is housed in a strong aluminium case with lid and carrying handle to provide an ideal solution to on-site and laboratory calibration of high resistance insulation testers.

The instrument can be supplied complete with a calibration certificate provided by our own in-house calibration laboratory.

切换设置
最大直流电压
准确性??
温度系数
1kΩ的
?20V
±0.1％
15ppm的/度。C。
为10kΩ
75V
±0.1％
15ppm的/度。C。
100kΩ的
200V
±0.1％
15ppm的/度。C。
1MΩ
500V
±0.1％
25ppm的/度。C。
10MΩ
2000V
±0.1％
50PPM /度。C。
100MΩ
3000V
±1％
为100ppm /℃的?C。
1GΩ
5000V
±1％
为100ppm /℃的?C。
10GΩ
5000V
±1％
为100ppm /℃的?C。
100GΩ
5000V
±2％
2000ppm的/度。C。
1TΩ
5000V
±2％
2000ppm的/度。C。
开路?5000V
整体范围
1kΩ至1TΩ，10步，第11位开路。
精度指定在20°C±1°C 10至50％RH
接地
开关面板上的金属接地端子。
连接
带1米屏蔽电缆的插入式屏蔽插头（高低两个）
外形尺寸
约27 x 25 x 18厘米
净重
大约2.5公斤
可提供校准证书。
Switch Settings
Max d.c. Volts
Accuracy??
Temperature Coefficient
1kΩ
?20V
±0.1%
15ppm/deg. C.
10kΩ
75V
±0.1%
15ppm/deg. C.
100kΩ
200V
±0.1%
15ppm/deg. C.
1MΩ
500V
±0.1%
25ppm/deg. C.
10MΩ
2000V
±0.1%
50ppm/deg. C.
100MΩ
3000V
±1%
100ppm/deg. C.
1GΩ
5000V
±1%
100ppm/deg. C.
10GΩ
5000V
±1%
100ppm/deg. C.
100GΩ
5000V
±2%
2000ppm/deg. C.
1TΩ
5000V
±2%
2000ppm/deg. C.
Open Circuit?5000V
Overall Range
1kΩ to 1TΩ in 10 steps with open circuit on eleventh position.
Accuracy Stated at 20° C±1°C 10 to 50%RH
Earthing
Metal earth terminal on switch panel.
Connections
Plug-in shielded plugs with 1 metre shielded cable (2 off High and Low)
Dimensions
approximately? 27 x 25 x 18 cm
Net Weight
approximately 2.5kg
Can be supplied with calibration certificate.