Labom BX1008 Series User manual

High temperature pressure gauges with switch
function
Type series BX1008
LABOM Mess- und Regeltechnik GmbH Im Gewerbepark 13 27798 Hude Germany
BA_035_en_2021-11_10.01
Hotline: [phone] Fax: [phone] e-mail: [e-mail] 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 EX Approval............................................................................................................2
2Transportation and Storage..........................................................................................2
3Installation and Commissioning ..................................................................................2
3.1 Mechanical Installation............................................................................................2
3.2 Electrical Connection ..............................................................................................3
4Operation........................................................................................................................4
4.1 Adjusting of contacts...............................................................................................4
4.2 Zero-point correction...............................................................................................5
4.3 Maintenance / Service.............................................................................................5
5Disassembly...................................................................................................................6

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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, applica-
ble 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_053) at www.la-
bom.com.
1.4 EX Approval
If you purchased a device with EX approval, please refer to the accompanying document
XA_013.
2 Transportation and Storage
Store and transport the device only under clean and dry conditions preferably in the original
packaging. Avoid exposure to shocks and excessive vibrations.
Permissible storage temperature: 0…70 °C
3 Installation and Commissioning
Ensure that the device issuitable for the intended application with respect to pressure range,
overpressure limit, media compatibility, temperature range and process connection.
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.
Use new gaskets for each installation. We recommend the use of aluminium gaskets (A 27
x 32 as per DIN 7603), which you can order directly from us as an accessory.

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Fit the pressure transmitter using four flange screws, as shown on the drilling diagram, and
tighten them gradually crosswise. Max. tightening torque: 60 Nm (slightly oiled).
During installation of the device, attention has to be paid to the diaphragms not being dam-
aged by the medium being measured. This is particularly important in the case of coagulat-
ing media that can have deforming influence on the diaphragms when they get cold.
Do not insulate the temperature coupler (tubular shank under the transmitter), as this would
reduce its decoupling effect.
Figure 1: Drilling diagram
Vent the pressure gauge after installation using the vent
valve (Figure 2).
The devices are supplied with a closed vent valve
(CLOSED position). Moving the red lever to the OPEN
position equalises the pressure level inside and outside
the case (Figure 3).
Figure 2: Vent valve
Figure 3: Move valve
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 4: Cable connector
The type of contact, the switch function and the pin connection can be found on a separate
label on the measuring device.
You can find further information about the connection of switch contacts in the document
TA_039 on www.labom.com.

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4 Operation
During operation, take care that the device remains within its intended pressure and tem-
perature ranges. No other monitoring is necessary.
Permissible media temperature: 10…350 °C
Permissible ambient temperature: 10…70 °C
Restricted ambient conditions may apply in explosion protected environments (see
XA_013).
4.1 Adjusting of contacts
Setting the contact can be done by using the adjustment lock (a) in the centre of the sight
glass. Just press down the mounted key (Figure 5) into the adjustment lock and then push
the key down until the pointer of the lock (b) catches the adjusting pin (c) of the set pointer
(d) in the middle (Figure 6).
The set pointer can be adjusted over the entire scale range. It must be ensured that the
contact will be set in a clockwise direction only. If the contact is accidentally set behind
the desired value, turn back the contact at least 5% below the desired value and make the
setting again in a clockwise direction.
The key is included in the supplied accessory kit and can be placed in the designated hole
in the cable connector after use.
Figure 5: Key
Figure 6: Setting the contact
The functionality and thus the switching reliability of the built-in switch contacts is guaran-
teed within the entire nominal range. Following valid standards though the accuracy stated
in the data sheet is assured for switching points that are set between 10% and 90% of the
nominal range only.
Operating the contact outside of the scale range is not permitted.
You can find further information on contacts in the document TA_039 on www.labom.com.

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4.2 Zero-point correction
Zero point deviations can occur due to the mounting, the installation position or due to the
type and duration of use. Measuring devices with micro controll position pointers can be
corrected in a depressurised state by means of the adjusting screw on the pointer hub (see
figure 7).
Figure 7: Zero-point correction
4.3 Maintenance / Service
When properly installed in accordance with applicable specifications, this device is mainte-
nance-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 components
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.
Remove the four flange screws.
The pressure transmitter system may be pulled out only while the process medium is liquid
(above melting point).
Use cylinder head screws (M12 x 55 as per DIN 912, A2-70) quality) for the two threaded
holes, as shown on the drilling diagram, to push the device out of the process and ensure
ease of removal. You can order these screws as an accessory.
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 pres-
sure 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 danger due
to residues when handling the removed device.