National Metrological Verification Regulations of the People's Republic of China
Latest
JJG 1122-2015
Scope
This procedure is applicable to the initial verification, subsequent verification and measurement performance of the speed measurement performance of a motor vehicle ground coil speed measurement system (hereinafter referred to as the ground induction coil speed measurement system) that is fixedly installed on the road and measures the driving speed of the motor vehicle through a set of ground induction coils. Check during use.