Siemens SITRANS F M Intermag 2, Operating Instructions Manual

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Operation
5-33
SITRANS FM Intermag 2 Flow Transmitter
Operating Manual - A5E00102775-03
5.3.4 Function Group Device Outputs
Analog out Thiss menu only appears only in devices with a 20 mA output
menu item 4.1 (7ME5033-0xxxx und -2xxxx).
The following settings are possible:
S
Current limiting , menu item 4.1.1
The upper current limit for the output signal is determined in this
menu item.
Current
Measured
value
22.5 mA
20.0 mA
Parameter range
0
Figure 5-14 Current limiting
S
Failure signal , menu item 4.1.2
In the event of a fault, e.g. a device error or measuring error due to
entrapment of air, the analog output outputs a pre-defined current.
The following settings are possible:
- 3.6 mA
- 22 mA
- 24 mA
- Hold for a defined time (5...240 seconds), then 3.6 mA
- Hold permanently
With the ”Hold 5 s” setting you can bypass temporary faults
(e.g. air entrapment in the medium) for up to about 5 s without
the analog signal outputting an error message. The same applies
accordingly for “Hold 20 s”, “Hold 40 s” etc. The last valid
measured value is output during the fault. If the fault lasts less
than 5 s the current measured value is output at the end of the
fault. If the fault persists (e.g. longer than 5 s) the output
signal is set to 3.6 mA.
In the ”Hold permanently” setting the last valid value is output
until the fault is eliminated.