VEGA MINITRAC 31 4 … 20 mA_HART - four-wire With SIL qualification - Manual (Page 47)

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7 Set up with the display and adjustment module
MINITRAC 31 • 4 … 20 mA/HART - four-wire
43389-EN-131119
In this menu item you can select the switching behaviour of the sen-
sor.
You can choose between an 8 - 16 mA characteristics or a 16 - 8 mA
characteristics.
In this menu item you can also define the switching behaviour in case
of fault. You can select if the current output should output 22 mA or
< 3.6 mA in case of fault.
In this menu item you can select which mode the sensor should oper-
ate in.
You can choose between overfill and dry run protection.
The relay outputs of the sensor react accordingly.
Overfill protection = the relay will deenergise (safe condition) when
the max. level is reached.
Dry run protection = the relay will deenergise (safe condition) when
the min. level is reached.
Make sure that you have selected the correct characteristics. See
menu item "Setup/Current output mode".
With this menu item you safeguard the sensor parameters against
unauthorized or unintentional modifications.
To avoid possible errors during parameterization in a non-safe user
environment, a verification procedure is used that makes it possible
to detect parameterization errors reliably. For this, safety-relevant
parameters must be verified before they are stored in the device. In
normal operating condition, the instrument is also locked against
parameter changes through unauthorized access.
Setup/Current output
mode
Setup/Relay
Lock setup - adjustment