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
Specifications
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. | |||
