User Manual

6 OPERATION
68
OPTIWAVE 7400-24 C
www.krohne.com 12/2015 - 4003518001 - MA OPTIWAVE7400-24-R01-en
2.5.8 MULT.REF.EN. Multiple reflections will cause the device to
display smaller level readings. Objects in
the tank, sharp corners, installation of the
device on a large nozzle or at the centre of a
dome roof, and low dielectric products (ε
r
=
1.8...5) can cause multiple reflections. A
very calm surface or a tank with a small
convex or flat roof can also cause multiple
reflections.
If this function is in operation, the device
looks for the first signal peak below the
process connection. This signal peak is then
used to measure the level of the tank
contents. If this function is not in operation,
the device looks for the largest signal below
the process connection.
YES, NO NO
2.5.7 EMP.SPEC.EN. The supervisor can start or stop the empty
spectrum filter.
YES, NO NO
2.6.0 COMMUNICAT.
2.6.1 ADDRESS
Any HART
®
address greater than 0 will
activate HART
®
multidrop mode. The
current output stays constant at 4 mA.
min.-max: 0…63 0
2.6.2 Each HART value (PV (primary value), SV
(secondary value), TV (tertiary value) and QV
(quaternary value)) can be set to a different
measurement type (level, distance,
reflectivity, conversion, ullage conversion).
2.7.0 DISPLAY
2.7.1 LANGUAGE Data can be shown in any of the languages
stored in the device.
9 languages are available
in 3 packs: (1) English,
French, German and
Italian; (2) English,
French, Spanish and
Portuguese; (3) English,
Chinese (Mandarin),
Japanese and Russian
3
2.7.2 LENGTH UNIT The length unit shown in normal mode. m, cm, mm, in (inches), ft
(feet)
m
2.7.3 CONV UNIT Conversion unit. The length, volume, mass
or flow rate conversion unit for the
conversion table and shown in normal
mode.
m3, L, gal (US gallons),
ImpG (Imperial gallons),
ft3, bbl (oil barrel), kg, t,
Ston, Lton, m, cm, mm,
in, ft, m3/h, ft3/h
L
2.7.4 PSWD YES/NO If it is necessary to protect your settings in
the supervisor menu with a password, set
this menu item to YES
YESYES
YES.
YES, NO YES
2.7.5 PASSWORD This changes the password for the
supervisor menu. Push the buttons up to 6
times in any order. This will be the new
password. To confirm the change, enter the
new password a second time. For more
data, refer to Protection of the device
settings on page 73.
[>
>>
>], [^
^^
^], [

],
[

], [>
>>
>] and [^
^^
^]
2.7.6 CONTRAST The contrast control for the display screen.
You can select a shade of grey between light
grey (level 20) and black (level 54).
min.-max: 20…54 36
Menu
No.
Function Function description Selection list Default