A fast analogue scanner for data acquisition on nuclear plants

An all-solid-state computer interface system has been designed specifically for nuclear power-station applications. It is capable of accepting directly low-level analogue signals such as those from thermocouples. The equipment is intended to operate in high electrical-interface levels, has a fast scanning rate, and converts plant signals into computer-compatible ones. The production of errors due to the coupling of electrical interference into the plant measuring circuits is described and a comparison is drawn up between the scheme and some read-relay-based interface systems used to date on power stations. (author)