Single, High Resistance Decade Box Model 4721

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.

For more information about this product contact Tinsley

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.
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