Vaisala DRYCAP DMT345 Guía de usuario Pagina 126

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User's Guide _______________________________________________________________________
126 __________________________________________________________________ M210762EN-G
ONLINE STATUS
Live measurement (data available): relay active (C and NO outputs are
closed)
No live data (for example: error state, chemical purge or adjustment
mode): relay released (C and NC outputs are closed)
See Figure 62 below for illustrative examples of the FAULT/ONLINE
STATUS relay output modes.
1102-040
Figure 62 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.
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