The esi SR1030 provides the part-per-million (ppm) resistance transfer accuracies and the long-term stabilities you need in today’s modern metrology and calibration laboratories. The esi SR1030 Resistance Transfer Standards are extremely accurate, stable resistance standards that are used on the bench and are light enough to carry with you to remote calibration, repair, production or R&D sites. The esi SR1030 consists of six transfer standards in decades from 1 Ω to 100 kΩ per step. Each decade standard consists of 12 nominally equal resistors matched initially to within 10 ppm. In addition, each decade standard produces three decade values – 10 resistors in series (10R), 10 resistors in parallel (R/10), and nine of the 10 resistors in series/parallel (R). By making a 1:1 comparison with the tenth resistor, you can resolve a series-parallel value to better than 1 ppm.
Resistance Values of 1 Ω - 100 kΩ
Initial Accuracy... ± 20 PPM of nominal value matched within 10 PPM
Transfer Accuracy... ± (1 PPM + 0.1uΩ at parallel value) for 100:1
Long Term Accuracy... ± 50 PPM of nominal value
Calibration Accuracy... ± 10 PPM
