Burkert 8635 User Manual [en, de, fr]
PTB 04 ATEX 2027
Type 8635
Electropneumatic positioner with ATEX approval
Elektropneumatischer Stellungsregler mit ATEX Zulassung
Positionneur électropneumatique avec mode de protection ATEX
Additional Instructions
Zusatzanleitung
Instruction supplémentaire
We reserve the right to make technical changes without notice.
Technische Änderungen vorbehalten.
Sous réserve de modifications techniques.
© 2014 Bürkert Werke GmbH
Operating Instructions 1403/00_EU-ml_00810377 / Original DE
PTB 04 ATEX 2027
Additional instructions
Contents
1 ADDITIONAL INSTRUCTIONS ...............................................................3
1.1 Definition of terms / abbreviation ...........................................3
2 SYMBOLS .........................................................................................................4
3 AUTHORIZED USE ......................................................................................4
4 PARTICULAR SAFETY INSTRUCTIONS ...........................................5
4.1 Explosion protection approval ................................................ 6
4.2 Instructions on operation in an explosion-risk (Ex) area ...6
1 ADDITIONAL INSTRUCTIONS
The additional instructions describe safety instructions and information
for the use of the electropneumatic positioner type 8635 in a potentially
explosive environment.
The additional instructions contain important information..
▶ Read the additional instructions carefully and follow the safety
instructions in particular, and also observe the operating conditions.
▶ Additional instructions must be available to each user.
▶ The liability and warranty for the device are void if the additional
instructions are not followed.
All other descriptions and information can be found in the operating
instructions of the device for the Type 8635.
The operating instructions can be found on the Internet at:
www.burkert.com
1.1 Definition of terms / abbreviation
In these instructions, the term “device” always refers to the electropneumatic positioner Type 8635.
In these instructions, the abbreviation “Ex” always refers to
“potentially explosive”.
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PTB 04 ATEX 2027
Symbols
2 SYMBOLS
The following symbols are used in these instructions.
Danger!
Warns of an immediate danger.
▶ Failure to observe the warning will result in a fatal or serious injury.
Warning!
Warns of a potentially dangerous situation.
▶ Failure to observe the warning may result in a serious or fatal
injury.
Caution!
Warns of a possible danger.
▶ Failure to observe this warning may result in a moderate or minor
injury.
note!
Warns of damage to property.
Important tips and recommendations.
Refers to information in these instructions or in other
documentation.
▶ Designates instructions for risk prevention.
→ Designates a procedure which you must carry out.
3 AUTHORIZED USE
Incorrect use of the electropneumatic positioner Type 8635 can
be dangerous to people, nearby equipment and the environment.
▶ The electropneumatic positioner is designed to be mounted on
pneumatic actuators of process valves for the control of media.
The device was designed for the use in
- Type 8635 PE68:
Explosion group II, category 2G Ex ia, T4, T5 and T6
(see information listed on the type label for the approval).
▶ The device is mounted onto a pneumatic actuator of a process
valve. The process valve and the actuator must have at least the
Ex approval of the pneumatic control unit.
▶ During use observe the admissible data, the operating condi-
tions and conditions of use specified in the contract documents,
operating instructions and on the type label
- of the electropneumatic positioner Type 8635 and
- the process valve.
▶ Use the device only in conjunction with third-party devices and
components recommended and authorized by Bürkert.
▶ Correct transportation, storage and installation, as well as care-
ful use and maintenance are essential for reliable and faultless
operation.
▶ Use the device only for its intended purpose.
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PTB 04 ATEX 2027
Particular safety instructions
4 PARTICULAR SAFETY
INSTRUCTIONS
Danger!
Risk of explosion when opening the device!
▶ During the installation and setting of the micro switches, no Ex
atmosphere may be present.
Risk of explosion due to electrostatic discharge.
In the event of a sudden discharge from electrostatically charged
devices or individuals, there is a risk of an explosion in the explosionrisk area.
▶ Take suitable measures to ensure that no electrostatic discharges
can build up in the explosion-risk area.
▶ Clean the device surface by gently wiping it with a damp or anti-
static cloth only.
To prevent the risk of explosion, observe not only the safety
instructions in the operating instructions for operation in the
explosion-risk area, but also the following:
▶ Observe information on temperature class, ambient temperature,
degree of protection and voltage on the type label for the approval.
▶ Do not use devices in areas where there is gas with a lower igni-
tion temperature than indicated on the type label for the approval.
▶ Installation, operation and maintenance may be performed by
qualified technicians only.
Danger!
▶ Observe the applicable safety regulations (also national safety
regulations) as well as the general rules of technology for con-
struction and operation.
▶ Do not repair the device yourself, but replace it with an equivalent
device.
▶ Repairs may be performed by the manufacturer only.
▶ Do not expose the device to any mechanical and/or thermal loads
which will exceed the limits described in the operating instructions.
▶ Use only cable and line entry points which have been approved
for the respective application area and which have been screwed
into place according to the associated installation instructions.
▶ Close all unnecessary cable glands with lock screws approved
for the explosions area.
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PTB 04 ATEX 2027
Particular safety instructions
4.1 Explosion protection approval
The explosion protection approval is only valid if you use the modules
and components authorized by Bürkert, as described in these operating instructions.
The device Type 8635 may be used only in combination with the valve
types released by Bürkert, otherwise the explosion protection approval
will be terminated.
If you make unauthorized changes to the system, the modules or components, the explosion protection approval will also be void.
EC-type examination certificate PTB 04 ATEX 2027
were issued by:
PTB (Physikalisch Technische Bundesanstalt)
Bundesallee 100
38116 Braunschweig
The PTB (CE0102) audits the manufacture.
4.2 Instructions on operation in an
explosion-risk (Ex) area
4.2.1 Safety instructions
For operation in an explosion-risk area zone (gas) 1 and 2, the following applies:
Danger!
Risk of explosion caused by electrostatic charge!
In the event of a sudden discharge from electrostatically charged
devices or individuals, there is a risk of an explosion in the explosionrisk area.
▶ Take suitable measures to ensure that no electrostatic discharges
can build up in the explosion-risk area.
▶ Clean the device surface by gently wiping it with a damp or anti-
static cloth only.
4.2.2 Media in explosion-risk areas
If explosive media are used, this can result in additional
explosion risks.
4.2.3 Actuators / valves in explosion-risk
areas
Use in an explosive atmosphere may be restricted by the
actuators / valves. Observe the operating instructions of the
actuators / valves.
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PTB 04 ATEX 2027
Particular safety instructions
4.2.4 Cleaning in explosion-risk areas
Check that any cleaning agents are approved for use in
explosive atmospheres.
4.2.5 Type label for explosions-risk areas
IECEx marking
IECEx approval number
IECEx PTB 04.0016
Ex ia IIC T6/T5/T4
II(1) 2G Ex ia IIC T6/T5/T4
Temperature class
Gas group
Ignition degree of protection
Marking gas explosions protection
PTB 04 ATEX 2027
ATEX approval number
4.2.6 Temperature ranges in explosion-risk
areas
Ambient temperature
T4, T5: -25 ... +65 °C
T6: -25 ... +60 °C
4.2.7 Electrical data
The device in ignition degree of protection intrinsic safety Ex ia IIC,
may be connected only to intrinsically safe electric.
Explosion group IIC
Category ia
Temperature class T4 / T5 / T6
Fig. 1: Type label for explosions-risk areas
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