标准号:IS 7728-1984
发布日期:1984/10/1 12:00:00
实施日期:1999/12/31 12:00:00
适用范围:1.1 This standard applies to analogue dc current signals used in process control systems to transmit information between the elements of systems.1.2 This standard does not apply to analogue dc current signals entirely used within an element.