Measurement Computing 6222 - Manual (Page 12)

6222 User’s Manual Block Diagram 2-1
Block Diagram 2
IOtech 6222 Block Diagram
The 12 thermocouple input channels of the 6222 are set up in three distinct isolated sections. Channels 1 through 4
share a common (COM) and an isolator; channels 5 through 8 and channels 9 through 12 also have this scenario.
Note 1: Circuits for channel group ‘5 through 8’ and group ‘9 through 12’ look like that of the first group; for which
only one channel is illustrated. Each four-channel circuit has one 24-bit ADC and one CJC.