KROHNE OPTIFLEX 1300C EN - Manual (Page 81)

OPERATION
6
81
OPTIFLEX 1300 C
www.krohne.com 03/2014 - 4000172306 - HB OPTIFLEX 1300 R07 en
C.1.13 Measuring
Mode
In Direct Direct Direct Direct mode, the device measures
the time it takes to receives a reflection
of the signal from the surface of the
tank contents. In TBF TBF TBF TBF mode, the device
measures the time it takes to receives
a reflection of the signal from the end
of the probe. TBF mode is used to
measure one product with a low ε
r
.
Automatic Automatic Automatic Automatic mode automatically
switches the measuring mode between
Direct and TBF mode. This is sufficient
for most applications. Direct mode is
used for products with an ε
r
≥1.6 (this
depends on the probe type). If ε
r
≤1.4,
use TBF mode.
Automatic, Direct, TBF Automatic
C.1.14 Product Er This function is available if TBF TBF TBF TBF or
Automatic Automatic Automatic Automatic mode is selected in C.1.13. If
possible, type in the exact value of the
product's dielectric constant. If you do
not know the exact value, use the
default value. A new product ε
r
that is
too low will mean that level will read
higher than its true value in TBF mode.
min-max: 1.10 to 115.00 2.4
C.1.15 Gas Er A major parameter for TDR level
measurement devices. If the gas is not
air, set the ε
r
value to the ε
r
value of the
gas.
min-max: 0.8...115 1
C.1.16 Level
Threshold
If it is difficult to identify the level
signal (for example: too many parasitic
signals), you can increase the level
threshold and the amplification (Gain)
of the signal. For more data, refer to
Thresholds and parasitic signals on
page 92.
7 Gains, min-max: 0...+1.25 V. Depends on
Gain (for
example, 0.5 V
Gain 6).
C.1.17 Interface
Threshold
Devices for interface applications only.
If it is difficult to identify the interface
signal (for example: too many parasite
signals), you can increase the interface
threshold and the amplification (Gain)
of the signal. For more data, refer to
Thresholds and parasitic signals on
page 92.
7 Gains, min-max: 0...+1.25 V. Depends on
Gain (for
example, 0.5 V
Gain 6).
C.1.18 Probe end
Threshold
Used in TBF TBF TBF TBF or Automatic Automatic Automatic Automatic mode. If it is
difficult to identify the probe end signal
(for example: too many parasite
signals), you can increase the probe
end threshold and the amplification
(Gain) of the signal. For more data,
refer to Thresholds and parasitic
signals on page 92.
7 Gains, min-max: 0...+1.25 V
or -1.25…0 V.
Depends on
Gain (for
example, 0.5 V
Gain 6).
Snapshot Starts or stops the operation of the
snapshot signal filter. Obey the
instructions in the quick setup menu to
get snapshot data. For more data, refer
to How to use the snapshot function to
filter parasitic signals on page 96.
Yes, No No
C.1.19 Units For
Tables
Sub-menu for volume and mass
conversion operations.
Table Length Unit, Conversion
Unit
C.1.19.1 Table Length
Unit
The length unit used in the conversion
table. If "free unit" is selected, the unit
device uses the unit name in menu
item C.5.1.7.
m, cm, mm, inch, ft, Free Unit m
Menu
No. Function Function description Selection list Default