Solved thanks to very good service from ISA by mr.Robinson.
Span-Zero adjust lct means if you can adjust the Zero Span and Zero localy on the transmitter. There are tree alternatives for this matter: 1. local span & zero. 2. local zero only. 3. no local span/zero. On Rosemount 3051 we have to...
The span is i another line on the diagram.
Earlier i also made my own datasheets, but now we have found out that we should make every datasheet in standard ISA format.
Find attached the datasheet for Rosemount...