Siemens SITRANS F US - 6.4 Main menu: Device output (menu 4)

SFIDK.PS.029.E5.02 / SW 2.01.07
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Current limit, menu 4.1.2
The upper current limit for the output signal is determined in this menu item.
Current limiting
Error signal, menu 4.1.3
In case of an error (see table “Error messages”) the analog output has one of the following error
signals:
The following settings are possible:
- 3.6 mA
- 22 mA
- 24 mA
- Hold for a defined time (5, 20, 40, 60, 120 or 240 seconds), then 3.6 mA
- Hold continuous
With the “Hold 5 s” setting, brief disturbances (e.g. air entrapped in the medium) can be bridged
for about 5 seconds without an error message via the analog signal.
The same applies for “Hold 20 s”, “Hold 40 s” etc.
The last valid measured value is output during the disturbance. If the disturbance lasts less than
5 s the current measured value is output after 5 seconds. If the disturbance persists (eg
disturbance lasts longer than 5 s), the output signal is set to 3.6 mA after 5 seconds.
In the “Hold continuous” setting, the last valid value is output for as long as the disturbance
persists, helpful in the configuration is the possibility of selectively suppressing error messages,
see menu 2.2.
The analog output is only active for devices with HART interface.
Analog output select
4.1.1 Analog output Assignment of a measured Flow Flow
select variable to output signal Sound velocity
US amplitude
There are three types of measurements which can be assigned to the analog output:
• Flow
• Sound velocity
• US amplitude
6.4 Main menu: Device output (menu 4)