VEGA FIBERTRAC 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
FIBERTRAC 31 • 4 … 20 mA/HART - four-wire
43386-EN-131119
When the output is active, the instrument has the complete function-
ality of a level measuring instrument. In this case, continue reading
under "Parameter adjustment/Level measurement".
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.
For this reason, the instrument is shipped in locked conditon. The PIN
in the delivery status is "0000".
After a change, all safety-relevant parameters must be verified. For
this purpose, a character string comparison must be carried out. This
is used to check the character respresentation and the communica-
tion channels.
Confirm if the two character strings are identical. The verification texts
are provided in German and with all other menu languages in English.
In a second step, all modified safety-relevant parameters are listed.
Confirm the modified values.
If the described process of parameter adjustment was run through
completely and correctly, the instrument will be locked and hence
ready for operation.
Otherwise the instrument remains in the released and hence unsafe
condition.
Lock setup - adjustment