Siemens SITRANS F US Operating Instructions Manual page 40

Function, menu 4.3.1
The digital output 2 (relay contact) can be configured for reporting device status (device fault,
measuring error), flow direction or a limit for flow, US velocity, US amplitude.
Possible alarm states are as follows:
• Alarm - device state status
• Flow direction forward
• Flow min - flow below lower limit
• Flow max - flow above upper limit
• Flow min/max - flow either under below limit or above upper limit
• Min/max US velocity
• Max US level
• Min US level
• Min/max US amplitude
• Max US amplitude
• Min US amplitude
• No function
Note
The relay contact is open when "no function" is set.
Signal type menu 4.3.2
The function of the relay is determined in this menu item:
Contact closes: Relay contact closes at
-
-
-
Contact opens: Relay contact opens at
-
-
-
The table explains relay logic.
Setting
Contact closes
Contact opens
The electronic fuse is tripped in the event of overloading. The recovery time of the fuse is a few
minutes.
40
Alarm message
Flow in forward-direction
Limit signal
Alarm message
Flow in forward-direction
Limit signal
SFIDK.PS.029.E5.02 / SW 2.01.07
Selection in menu "4.3.1 Function"
Selection in menu "4.3.1 Function"
No alarm
Reverse flow
No limit signalling
Switching status of the relay
Digital output 2
Alarm message
Forward flow
Limit signalling