This standard specifies the calibration conditions, calibration items and methods, calibration result processing and recalibration time intervals of dual-channel echo testers. This standard is applicable to the calibration of newly manufactured, in-use and repaired CJ-X dual-channel echometers. The main technical indicators of other types of echometers meet the requirements of this standard. The calibration method can be performed with reference to this standard.
SY/T 6814-2010 history
2011SY/T 6814-2010 Calibration method of the double-channel echo instrument