Labom C 1 Series User manual

Pressure transmitter UNIVERSAL
Type series Cx1xxx, Cx2xxx
LABOM Mess- und Regeltechnik GmbH Im Gewerbepark 13 27798 Hude Germany
BA_020_2019-05_10.00
Hotline: [phone] Fax: [phone] e-mail: [email protected]om www.labom.com
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Operating Instructions
1General Information.......................................................................................................2
1.1 General Safety Notes..............................................................................................2
1.2 Intended Use...........................................................................................................2
1.3 Conformity with EU Regulations..............................................................................2
1.4 ATEX Approval........................................................................................................2
2Transportation and Storage..........................................................................................2
3Installation and Commissioning ..................................................................................2
3.1 Mechanical Installation............................................................................................3
3.2 Electrical Connection ..............................................................................................3
4Operation........................................................................................................................3
4.1 Zero-point correction...............................................................................................4
4.2 Devices with Diaphragm Seal .................................................................................4
4.3 Maintenance / Service.............................................................................................4
5Disassembly...................................................................................................................5

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1 General Information
This document contains necessary information for the proper installation and use of this
device. In addition to this instruction, be sure to observe all statutory requirements, appli-
cable standards, the additional technical specifications on the accompanying data sheet
(see www.labom.com) as well as the specifications indicated on the type plate.
1.1 General Safety Notes
The installation, set up, service or disassembly of this device must only be done by
trained, qualified personnel using suitable equipment and authorized to do so.
Warning
Media can escape if unsuitable devices are used or if the installation is not
correct.
Danger of severe injury or damage
Ensure that the device is suitable for the process and undamaged.
1.2 Intended Use
The device is intended to measure pressure of gases, vapors and liquids as specified in
the data sheet.
1.3 Conformity with EU Regulations
The CE-marking on the device certifies its compliance with the applicable EU Directives for
placing products on the market within the European Union.
You find the complete EU Declaration of Conformity (document no. KE_021) at
www.labom.com.
1.4 ATEX Approval
Devices of the type Cx1xx1 or Cx2xx1 are certified for use in explosive environments.
If you purchased a device with ATEX approval, please refer to the accompanying docu-
ment XA_007 for ATEX-relevant information.
2 Transportation and Storage
Store and transport the device only under clean and dry conditions preferably in the origi-
nal packaging. Avoid exposure to shocks and excessive vibrations.
Permissible storage temperature: -25…85 °C
3 Installation and Commissioning
Ensure that the device is suitable for the intended application with respect to pressure
range, overpressure limit, media compatibility, temperature range and process connection.

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3.1 Mechanical Installation
Before starting operation, check the process connection carefully for leaks under pressure.
Use gaskets, if required, that are suitable for the process connection and resistant to the
media.
You can use the device in any mounting position. Normally the transmitter is adjusted for a
vertical mounting position. A different mounting position in combination with a small nomi-
nal range might cause a zero point offset. In this case a zero point adjustment might be
necessary.
The device is ventilated via the connecting cable with a degree of IP67 protection and
pressure ranges up to 16 bar / 250 psi. During installation lay a ventilated cable to an
aeratable connection room. This compensates any atmospheric fluctuations.
3.2 Electrical Connection
Complete the mechanical installation before you connect the device electrically.
Set up all electrical connections while the voltage supply is switched off.
Figure 1: Options of the electrical connection
4 Operation
During operation, take care that the device remains within its intended pressure and tem-
perature ranges. No other monitoring is necessary.
The permissible ambient and media temperature depends on the type of device and its
design. This information can be found in the relevant data sheet.

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4.1 Zero-point correction
If a subsequent zero point correction becomes necessary the potentiometers can be ac-
cessed in the model with field housing by unscrewing the locking ring. In the model with
electrical plug the potentiometers can be accessed beneath the cap. The potentiometer for
the zero point (zero) and range (span) can be adjusted with a screwdriver (1.5x40). 10
revolutions correspond to approx. ± 10% of the measurement range. An exact reference
pressure should be applied to align the measurement range.
Figure 2: Zero-point correction
4.2 Devices with Diaphragm Seal
Remove the protective cap or protective wrapping from the diaphragm only just before in-
stallation to prevent contamination or damage.
The diaphragm must not be touched. Do not place the device on its diaphragm. Even
small scratches or deformations may negatively influence the zero point or other charac-
teristics of the device.
Pressure transmitter and diaphragm seal are a closed system that must not be separated.
You can find further information about diaphragm seals in the document TA_031 on
www.labom.com.
4.3 Maintenance / Service
When properly installed in accordance with applicable specifications, this device is
maintenance-free. However, we recommend an annual recalibration of the device.
In the event of any damage or defect the customer cannot replace or repair any compo-
nents or assemblies.

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5 Disassembly
When measuring hot media, make sure that the device has cooled down prior to any dis-
mounting or wear appropriate protective clothing to avoid burns.
Switch off the power supply to the device before disconnecting the electrical connections.
Once this is done, the device may be mechanically removed.
Warning
Opening pressurized lines might cause severe injuries.
Danger of severe injuries or damage
Relieve the process pressure before attempting to remove the device.
Shut off the pressure supply for all feed lines to the device and relieve the
pressure in them.
Warning
Hazardous deposits and residues might remain on opened process connec-
tions and removed devices.
Danger of injury
After the device has been removed, seal off the measuring point and
mark the open process connection accordingly. Consider a possible dan-
ger due to residues when handling the removed device.