Operating Manual
Industrial pressure transmitter DMK / DMP,
screw-in transmitter LMK / LMP and
OEM pressure transmitter
DMK 331, DMK 331 P, DMK 351, DMK 351 P,
DMP 331, DMP 331i, DMP 331 P, DMP 333,
DMP 333i, DMP 334, DMP 343,
LMK 331, LMK 351, LMP 331, LMP 331i,
17.6XX, 17.6XX G, 18.6XX, 18.6XX G,
26.6XX, 26.6XX G, 30.6XX, 30.6XX G
DRUCK & TEMPERATUR Leitenberger GmbH
Bahnhofstr. 33
D - 72138 Kirchentellinsfurt
Germany
Tel: +49 (0) 7121-90920-0
Fax: +49 (0) 7121-90920-99
www.druck-temperatur.de
E-Mail: DT-Export@Leitenberger.de
It is possible to download from www.druck-temperatur.de
data sheets, operating manuals, ordering codes and certifi-
cates, as well.
1. General information
1.1 Information on the operating manual
This operating manual contains important information on
proper usage of the device. Read this operating manual
uring device.
Adhere to the safety notes and operating instructions which
regulations regarding occupational safety, accident preven-
tion as well as national installation standards and engineering
rules must be complied with!
This operating manual is part of the device, must be kept
nearest its location, always accessible to all employees.
This operating manual is copyrighted. The contents of this
operating manual reflect the version available at the time of
printing. It has been issued to our best knowledge. However,
errors may have occurred. LEITENBERGER is not liable for any
incorrect statements and their effects.
– Technical modifications reserved –
1.2 Symbols used
DANGER! – dangerous situation, which may result in
death or serious injuries
WARNING! – potentially dangerous situation, which may
result in death or serious injuries
CAUTION! – potentially dangerous situation, which may
result in minor injuries
!
CAUTION! – potentially dangerous situation, which may
result in physical damage
NOTE – tips and information to ensure a failure-free
operation
1.3 Target group
WARNING! To avoid operator hazards and damages of
the device, the following instructions have to be worked
out by qualified technical personnel.
1.4 Limitation of liability
By non-observance of the operating manual, inappropri-
ate use, modification or damage, no liability is assumed
and warranty claims will be excluded.
1.5 Intended use
-The pressure transmitter DMK/DMP and OEM-
pressure transmitter have, according to the type, been
developed for applications in overpressure and vacuum
as well as for absolute pressure measurement. The
screw-in transmitters LMK/LMP have been particularly
developed for level and process measurement. It is the
operator's responsibility to check and verify the suitability
of the device for the intended application. If any doubts
remain, please contact our sales department in order to
ensure proper usage. LEITENBERGER is not liable for any
incorrect selections and their effects!
- Permissible media are gases or liquids, specified in the
data sheet. In addition it has to be ensured, that this me-
dium is compatible with the media wetted parts.
-TThe technical data listed in the current data sheet are
engaging and must be complied with. If the data sheet is
not available, please order or download it from our
homepage. (http://www.druck-temperatur.de)
WARNING! Danger through improper usage!
1.6 Package contents
Please verify that all listed parts are undamaged included in
the delivery and check for consistency specified in your order:
- pressure transmitter or screw-in transmitter
- for mechanical pressure ports DIN 3852: o-ring
(pre-assembled)
- mounting instructions
- with option SIL2 version:
Functional Safety Manual, Functional Safety Data
Sheet , SIL Declaration of Conformityl
2. Product identification
The device can be identified by its manufacturing label. It
provides the most important data. By the ordering code the
product can be clearly identified.
!
The manufacturing label must not be removed from the
device!
3. Mechanical installation
3.1 Mounting and safety instructions
WARNING! Install the device only when depressurized
and currentless!
WARNING! This device may only be installed by quali-
fied technical personnel who has read and understood
the operating manual!
DANGER! When used improperly, special versions of
devices suitable for oxygen applications may explode!
To ensure a usage without danger, the following points
must be adhered to:
- Make sure that your device has been ordered as a
special version for oxygen applications and that it
has been delivered conformably. You can check
this easily by reading the manufacturing label (see
figure 1). If your ordering code ends with the num-
bers "007", your device is suitable for the oxygen
application.
- When being dispatched the device is packed into a
plastic bag to keep it from impurity. The indication
label with the text "Device for oxygen, unpack only
directly before assembling" has to be observed!
Furthermore any skin contact must be avoided dur-
ing unpacking and installing the device, so that no
fatty residue remains on the device!
- For installing the respective regulations for explo-
sion protection have to be fulfilled. Please check if
an ATEX-approval is necessary for the application
in addition to the acceptability for oxygen. (the de-
livered device has no ATEX-approval)
- Consider that the entire construction must corre-
spond to the standards of BAM (DIN 19247).
- For transmitters with oxygen acceptability up to
50 bar, O-rings of V747-75 with BAM-approval are
used. The upper limiting values allowed are 40 bar/
130°C and 50 bar/ 100°C.
- For transmitters with oxygen acceptability over 50
bar, O-rings of FKM 90 are used which were tested
for acceptability up to 95° C and 215 bar in the
scientific coal research institute in Ostrava – CZ.
!
Handle this high-sensitive electronic precision
measuring device with care, both in packed and
unpacked condition!
!
There are no modifications/changes to be made on the
device.
!
Do not throw the package/device!
!
To avoid damaging the diaphragm, remove packaging
and protective cap directly before starting assembly. The
delivered protective cap has to be stored!
!
Place the protective cap on the pressure port again
immediately after disassembling.
!
Handle the unprotected diaphragm very carefully - it is
very sensitive and may be easily damaged.
!
Do not use any force when installing the device to pre-
vent damage of the device and the plant!
!
For installations outdoor and in damp areas following
these instructions:
- To prevent moisture admission in the plug the de-
vice should be installed electrically after mounting,
at once. Otherwise a moisture admission has to be
blocked e.g. by using a suitable protection cap.
(The ingress protection in the data sheet is valid for
the connected device.)
- Choose an assembly position, which allows the
flow-off of splashed water and condensation. Avoid
permanent fluid at sealing surfaces!
- When using a cable gland or outlet device, turn the
outgoing cable downwards. If the cable has to be
turned upwards, then point it downward so the
moisture can drain.
- Install the device in such a way that it is protected
from direct solar irradiation. Direct solar irradiation
can lead to the permissible operating temperature
being overstepped in the worst case. By this the
operability of the device can be affected or dam-
aged. If the internal pressure increases due to solar
irradiation, measurement errors may be caused.
!
For devices with gauge reference in the housing (small
hole next to the electrical connection), install the device
in such a way, that the gauge reference is protected
from dirt and moisture. Should the device be exposed to
fluid admission, the functionality will be blocked by the
gauge reference. An exact measurement in this condi-
tion is not possible. Furthermore this can lead to dam-
ages on the device.
Take note that no assembly stress occurs at the
pressure port, since this may cause a shifting of the
characteristic curve. This is especially important for very
small pressure ranges as well as for devices with a
pressure port made of plastic.
In hydraulic systems, position the device in such a way
that the pressure port points upward (ventilation).
Provide a cooling line when using the device in steam
piping.
If there is any danger of damage by lightning or
overpressure when the device is installed outdoor, we
suggest putting a sufficiently dimensioned overpressure
protection between the supply or switch cabinet and the
device.
3.2 General installation steps
- Carefully remove the pressure measuring device from
the package and dispose of the package properly.
- Go ahead as detailed in the specific instructions below.
3.3 Installation steps for DIN 3852
- Check to ensure the proper groove fitting of the o-ring
and additionally to ensure no damage to the o-ring.
- Ensure that the sealing surface of the taking part is per-
fectly smooth and clean.
- Screw the device into the corresponding thread by hand.
- If you have a device with a knurled ring, the transmitter
has to be screwed in by hand only.
- Devices with a spanner flat have to be tightened with an
open-end wrench (wrench size of steel: G1/4": approx. 5
Nm; G1/2": approx. 10 Nm; G3/4": approx. 15 Nm; G1":
approx. 20 Nm; G1 1/2": approx. 25 Nm; wrench size of
plastic: max. 3 Nm).
Ordering code
Connector pinout
Type
designation
Supply
Nominal
pressure
range
Signal
Serial
number
Fig. 1 manufacturing label
carefully before installing and starting up the pressure meas-
are given in the operating manual. Additionally applicable
