Vaisala MMT330 - Manual (Page 126)

User's Guide _______________________________________________________________________
124 __________________________________________________________________ M210733EN-G
1102-040
Figure 60 FAULT/ONLINE STATUS Relay Output Modes
FAULT/ONLINE STATUS relays are usually used in conjunction with
an analog output to obtain validity information for the output value.
NOTE If transmitter loses its power, all status-based relays are released
similarly to the case of an instrument failure.