User Manual
OPERATION
6
65
OPTIWAVE 7400-24 C
www.krohne.com12/2015 - 4004901901 - MA OPTIWAVE7400-24 R01 fr
2.5.5 Er PRODUCT For measurement in TBF mode only. The
device automatically calculates the level
based on the product ε
r
. If you select "TBF
Partial" or "TBF Full" in menu item 2.5.4
MEASUR.MODE, you can change the ε
r
value
manually to adjust readings.
min-max: 1.100 to 10.000 2.000
2.5.6 OVERF. ENAB. If this function is in operation, the device will
monitor the level even if it is in the blocking
distance. The reading shown on the display
stays fixed at the blocking distance if the
level is higher than the blocking distance.
The output will show that the tank is full. An
error is recorded by default.
If this function is not in operation, the
device looks for the largest signal between
the process connection and the tank bottom.
YES, NO NO
2.5.7 OVERF.
THRESH.
The overfill threshold. TBD.
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
Menu
No.
Function Function description Selection list Default