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Figure 61, Fault/online status relay output modes – Vaisala PTU300 User Manual

Page 137

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Chapter 4 _________________________________________________________________ Operation

VAISALA _______________________________________________________________________ 135

1102-040

Figure 61

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.