6
OPERATION
106
OPTIFLEX 1300 C
www.krohne.com
01/2008 • 4000172301 - HB OPTIFLEX 1300 R02 en
Interface measurement lost
2
W
3
The device can no longer find
the interface.
Check the tank contents
using another procedure. If
the interface is too low (the
interface is below the end of
the probe), then fill the tank
with interface product until it
is in the measurement range.
If the interface too high (the
interface is in blocking
distance), then remove the
contents from tank until the
interface is back in the
measuring range. If it is none
of these two, then there is
possibly an emulsion at the
interface. Wait for the
instrument to find the
interface again.
Interface measurement low
2
W
The product is lost in the
empty area. The
measurement is held at the
sensor length.
Fill the tank to at least the
bottom of the measuring
range to continue
measurement.
Layer measurement low
2
W
The layer is less than 50 mm /
2" thick.
Fill the tank with top product
until it is at least 50 mm (2")
thick.
Signal status
Reference pulse low
amplitude
W
Reference amplitude is less
than reference threshold 1.
This fault occurs because of
electrostatic discharge in
solid applications.
Check device and tank
installation and earthing
points immediately. For more
data, refer to
Installation
on
page 14.
Reference pulse lost
E
Reference amplitude is less
than reference threshold 2.
This fault occurs because of
electrostatic discharge in
solid applications.
Contact your supplier to
check that the electronics are
still functioning correctly.
Make sure that your
installation has ESD
protection. For more data,
refer to
Nozzles on conical
silos
on page 40.
Level pulse lost
W
This shows that the
instrument lost the level
signal in direct mode but
finds the signal for the end of
the probe. It will continue to
measure level in tank bottom
following (TBF) mode. This
warning is only displayed in
automatic measurement
mode.
The instrument continues to
measure in TBF mode. If the
instrument does not measure
correctly, make sure the
amplitude of the level
threshold is correct. For
more data, refer to
Thresholds and parasite
signals
on page 94.
Error Message
Error
code
Description
Corrective action
HB_OPTIFLEX1300_EN_D4_080428.book Page 106 Tuesday, April 29, 2008 2:47 PM