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If a transition is desired from a probe cable with gauge
tube to a cable without gauge tube, we recommend our
terminal box KL 1 or KL 2
Usually, the required cable is included in the scope of
delivery. If it is although necessary to connect an exist-
ing or special cable, the total resistance will increase.
For applications, where this additional resistance of the
connecting cable could cause problems, this cable has
to be checked with the following calculation.
2
l
R
L
A
resistance of connecting cable in
with
R
:
L
specific resistance in mm²/m
ρ:
l:
cable length in m
A:
cross section of conductor in mm²
V
R
R
...
R
0.02
A
tot
L1
L2
load
with
V
:
total voltage drop
tot
R
: load resistance (to be taken out of the
load
current data sheet)
the following condition has to be fulfilled:
V
V
V
min
S
tot
S
with
V
:
planned supply voltage
S
V
: minimal supply voltage (to be taken out
S min
of the current data sheet)
5. Characteristic
5.1 Accuracy 0.1 % FSO
Devices with an accuracy of 0.1 % FSO have micro-
controlled electronics for processing and improving the
signal. As a matter of principle, the processing takes more
time than for analogue sensors, which have only an amplifi-
er. Due to this longer response time, the output signal
follows the measured value discontinuously. For relatively
stable measuring values, this characteristic is secondary.
Please compare the specification for the response time in
the data sheet.
6. Initial start-up
WARNING! Before start-up, the user has to check for
proper installation and for any visible defects.
WARNING! The device can be started and operated by
authorized personnel only, who have read and under-
stood the operating manual!
WARNING! The device has to be used within the
technical specifications, only (compare the data in the
data sheet)!
7. Placing out of service
WARNING! When dismantling the device, it must
always be done in the depressurized and currentless
condition! Check also if the medium has to be drained
off before dismantling!
WARNING! Depending on the medium, it may cause
danger for the user. Comply therefore with adequate
precautions for purification.
8. Maintenance
In principle, this device is maintenance-free. If desired, the
housing of the device can be cleaned when switched off
using a damp cloth and non-aggressive cleaning solutions.
Depending on the measuring medium, however, the dia-
phragm may be polluted or coated with deposit. If the
medium is known for such tendencies, the user has to set
appropriate cleaning intervals. After placing the device out
of service correctly, the diaphragm can usually be cleaned
carefully with a non-aggressive cleaning solution and a soft
brush or sponge. If the diaphragm is calcified, it is recom-
mended to send the device to Barksdale for decalcification.
Please read therefore the chapter "Service / Repair" below.
An incorrect cleaning can cause irreparable damages
on the diaphragm. Never use spiky objects or pres-
sured
air
for
cleaning
2
9. Service / Repair
9.1 Recalibration
During the life-time of a probe, the value of offset and span
may shift. As a consequence, a deviating signal value in
reference to the nominal pressure range starting point or
end point may be transmitted. If one of these two phenome-
na occurs after prolonged use, a recalibration is recom-
mended to ensure furthermore high accuracy.
9.2 Return
Before every return of your device, whether for recalibration,
decalcification, modifications or repair, it has to be cleaned
carefully and packed shatter-proofed. You have to enclose a
notice of return with detailed defect description when
sending the device. If your device came in contact with
harmful substances, a declaration of decontamination is
additionally required. Appropriate forms can be downloaded
from our homepage www.barksdale.de. Should you
dispatch a device without a declaration of decontamination
and if there are any doubts in our service department
regarding the used medium, repair will not be started until
an acceptable declaration is sent.
If the device came in contact with hazardous
substances, certain precautions have to be
complied with for purification!
10. Disposal
The device must be disposed according to the
European
2003/108/EG (on waste electrical and electronic
equipment) Waste of electrical and electronic
equipment may not be disposed by domestic
refuse!
WARNING! Depending on the measuring medium,
deposit on the device may cause danger for the user
and the environment. Comply with adequate precau-
tions for purification and dispose of it properly.
11. Warranty conditions
The warranty conditions are subject to the legal warranty
period of 24 months from the date of delivery. In case of
improper use, modifications of or damages to the device, we
do not accept warranty claims. Damaged diaphragms will
also not be accepted. Furthermore, defects due to normal
wear are not subject to warranty services.
12. Declaration of conformity / CE
The delivered device fulfils all legal requirements. The
applied directives, harmonised standards and documents
are listed in the EC declaration of conformity, which is
available online at: http://www.barksdale.com.
Additionally, the operational safety is confirmed by the CE
sign on the manufacturing label.
the
diaphragm.
Directives
2002/96/EG
and
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