Measurement time management system, data transmission / reception device, and measurement time management method

摘要

A unified time can be simply set between data measuring instruments, and when the clock function of a specific data measuring instrument was damaged, the data measuring instrument can be immediately set to have the unified time, and when a certain data measuring instrument was managed with a plurality of PCs, it is not necessary to adjust the difference of time between the PCs, and in addition even when a data measuring instrument was used in the state with time zone difference, it is not necessary to adjust the difference of time due to the time zone difference. A PC 11 can obtain the time information of a provider side server 44 at the timing of transmitting measuring information to the provider side server 44 to synchronize therewith, and a relay key 12 can obtain the time information from the PC 11 to synchronize therewith. The relay key 12 records a time stamp on the measuring information transmitted from the data measuring instrument 14 or the like based on the above time information, and transmits to the PC 11 the measuring information on which the time stamp was recorded, and the PC 11 forwards the measuring information to the provider side server 44.