Electricity meter using the meter charge mode terminal operator

Smart meter electricity meter terminal using the estimated cost way. My state is using the smart meter's verification department authorized by the State certified by the measuring  Electric transformer , all of the test items are in strict accordance with the relevant rules of order the items, the performance parameters of the product indicators do strict checks to ensure that equipment out of the All test items per meter are  power transformers  pilot. Have questioned the accuracy of the smart meter customers can go to the operating room for re-checking power supply, power supply enterprise staff will accompany the body to the verification of measuring instruments calibration again.