Highly efficient equipment for calibrating and testing dc measuring instruments

Conclusions

• 1. Considering the relative complexity of the electrical circuit of the equipment and the labor consumed in the manufacture and assembly of its units, the results obtained above fully justify the work entailed in producing them.

• 2. The principles adopted for the calibration of currents and voltages and the automation of their switching reduces to a minimum the overall size and weight of the equipment and simplified its servicing.

• 3. The labor productivity in using this equipment is raised by a factor of 4–5.

• 4. In testing the instruments there is no need for any calculations, special tables, etc., and the calibration and testing of instruments with calibrators is less tiresome than with potentiometric devices by the comparison method.

By adopting this equipment 24000 rubles can be saved per annum.