Bürkert 8202 ELEMENT User manual

Operating Instructions
Bedienungsanleitung
Manuel d‘utilisation
Type 8202
ELEMENT
pH- or redox-meter
pH- oder Redox-Messgerät
pH- ou redox-mètre

We reserve the right to make technical changes without notice.
Technische Änderungen vorbehalten.
Sous réserve de modifications techniques.
© Bürkert SAS, 2008 - 2016
Operating Instructions 1603/4_EU-ML 00560329 / Original_FR

3
1 ABOUT THIS MANUAL .....................................................................................................................................................................7
1.1 Definition of the word "device" .......................................................................................................................................7
1.2 Validity of the manual ..........................................................................................................................................................7
1.3 Symbols used ..........................................................................................................................................................................7
2 INTENDED USE ....................................................................................................................................................................................8
3 BASIC SAFETY INFORMATION ....................................................................................................................................................9
4 GENERAL INFORMATION .............................................................................................................................................................10
4.1 Manufacturer's address and international contacts .........................................................................................10
4.2 Warranty conditions ...........................................................................................................................................................10
4.3 Information on the Internet ............................................................................................................................................10
5 DESCRIPTION ....................................................................................................................................................................................11
5.1 Area of application .............................................................................................................................................................11
5.2 General description ...........................................................................................................................................................11
5.2.1 Construction of the 8202 .................................................................................................................11
5.2.2 pH or Redox ("ORP") probe ............................................................................................................11
5.3 Description of the name plate .....................................................................................................................................12
5.4 Available versions ...............................................................................................................................................................12
6 TECHNICAL DATA .............................................................................................................................................................................13
6.1 Conditions of use ................................................................................................................................................................13
6.2 Conformity to standards and directives .................................................................................................................13
6.3 Mechanical data ...................................................................................................................................................................14
6.4 Dimensions of the 8202 ..................................................................................................................................................14
6.5 Fluid data .................................................................................................................................................................................15
6.6 Electrical data .......................................................................................................................................................................17
6.7 Data of connectors and cables....................................................................................................................................18
6.8 pH/Redox ("ORP") probe ................................................................................................................................................18
English
Contents
Typ 8202 ELEMENT

4
7 ASSEMBLY ...........................................................................................................................................................................................19
7.1 Safety instructions .............................................................................................................................................................19
7.2 Removing the cover ...........................................................................................................................................................19
7.3 Mounting the cover ............................................................................................................................................................20
7.4 Mounting the display module .......................................................................................................................................20
7.5 Removing the display module .....................................................................................................................................21
7.6 Mounting the probe into the holder (without fluid) ..........................................................................................21
7.7 Mounting the electronic module to the sensor holder (without fluid) ...................................................22
8 INSTALLATION AND WIRING ......................................................................................................................................................23
8.1 Safety instructions .............................................................................................................................................................23
8.2 Installation onto the pipe ................................................................................................................................................24
8.3 Electrical wiring ....................................................................................................................................................................26
8.3.1 Assembling the male or female connector (accessories) .........................................................27
8.3.2 Making the installation equipotential ..............................................................................................27
8.3.3 Wiring a version with a single M12 fixed connector ..................................................................28
8.3.4 Wiring a version with 2 M12 fixed connectors ............................................................................30
9 ADJUSTMENT AND COMMISSIONING .................................................................................................................................33
9.1 Safety instructions .............................................................................................................................................................33
9.2 Knowing the operating levels .......................................................................................................................................33
9.3 Using the navigation button ..........................................................................................................................................34
9.4 Using the dynamic functions ........................................................................................................................................36
9.5 Entering a numerical value (example) .....................................................................................................................36
9.6 Browsing in a menu (example) ...................................................................................................................................36
9.7 Knowing the display ..........................................................................................................................................................37
9.7.1 Knowing the icons and LEDs ..........................................................................................................37
9.7.2 Knowing the display at the power-up of the device ...................................................................38
9.8 Knowing the Process level ............................................................................................................................................38
9.9 Accessing the Configuration level .............................................................................................................................39
9.10 Knowing the structure of the menus on the Configuration level ..............................................................40
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Typ 8202 ELEMENT

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9.11 Knowing the Parameters Menu ...................................................................................................................................43
9.11.1 Transferring data from one device to another ..............................................................................43
9.11.2 Setting the date and time .................................................................................................................44
9.11.3 Modifying the PARAM menu access code ...................................................................................44
9.11.4 Restoring the default parameters of the Process level and the outputs ...............................45
9.11.5 Setting the data displayed in the Process level ..........................................................................45
9.11.6 Displaying the lowest and highest values measured .................................................................46
9.11.7 Setting the display contrast and brightness ................................................................................47
9.11.8 Choosing the output wiring mode ..................................................................................................47
9.11.9 Setting the parameters of the current outputs ............................................................................48
9.11.10 Setting the parameters of the transistor outputs ........................................................................49
9.11.11 Setting the sensor parameters ........................................................................................................51
9.12 Knowing the Calibration menu ...................................................................................................................................52
9.12.1 Activating/deactivating the Hold function .....................................................................................52
9.12.2 Modifying the Calibration menu access code .............................................................................52
9.12.3 Adjusting the current outputs ..........................................................................................................53
9.12.4 Calibrating the pH sensor ................................................................................................................53
9.12.5 Calibrating the Redox- ("ORP"-) sensor .......................................................................................57
9.12.6 Entering an offset for the temperature measurement ................................................................60
9.13 Knowing the Diagnostic menu ....................................................................................................................................60
9.13.1 Modifying the Diagnostic menu access code ..............................................................................60
9.13.2 Monitoring the condition of the probe ...........................................................................................60
9.13.3 Monitoring the fluid temperature .....................................................................................................62
9.14 Knowing the Test menu .................................................................................................................................................63
9.14.1 Modifying the Test menu access code ..........................................................................................63
9.14.2 Checking the outputs functions ......................................................................................................63
9.14.3 Checking the outputs behaviour .....................................................................................................64
9.15 Knowing the Information menu ...................................................................................................................................64
9.15.1 Reading the cause of events linked to icons ...............................................................................64
9.15.2 Reading the software versions ........................................................................................................65
9.15.3 Reading some identification informations of the device ............................................................65
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Typ 8202 ELEMENT

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10 MAINTENANCE AND TROUBLESHOOTING .......................................................................................................................66
10.1 Safety instructions .............................................................................................................................................................66
10.2 Cleaning the device ...........................................................................................................................................................66
10.2.1 Cleaning the pH/Redox ("ORP") probe ........................................................................................67
10.3 Replacing the probe ..........................................................................................................................................................67
10.4 Replacing the seal of the sensor holder ................................................................................................................68
10.5 Solving a problem ..............................................................................................................................................................70
11 SPARE PARTS AND ACCESSORIES ......................................................................................................................................75
12 PACKAGING, TRANSPORT ..........................................................................................................................................................76
13 STORAGE ..............................................................................................................................................................................................76
14 DISPOSAL OF THE PRODUCT ..................................................................................................................................................76
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Typ 8202 ELEMENT

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About this manual
1 ABOUT THIS MANUAL
This manual describes the entire lifecycle of the device. Please keep this manual in a safe place, accessible to all
users and any new owners.
This manual contains important safety information.
Failure to comply with these instructions can lead to hazardous situations. Pay attention in particular to the
chapters "Basic safety information" and "Intended use".
▶Whatever the version of the device, this manual must be read and understood.
1.1 Definition of the word "device"
The word "device" used within this manual refers to the pH or "ORP" (Redox) transmitter type 8202 ELEMENT.
1.2 Validity of the manual
The manual is valid for the devices from the version V2.
These informations are available on the name plate, see chap. 5.3.
1.3 Symbols used
DANGER
Warns against an imminent danger.
▶Failure to observe this warning can result in death or in serious injury.
WARNING
Warns against a potentially dangerous situation.
▶Failure to observe this warning can result in serious injury or even death.
ATTENTION
Warns against a possible risk.
▶Failure to observe this warning can result in substantial or minor injuries.
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Typ 8202 ELEMENT

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About this manual
NOTE
Warns against material damage.
▶Failure to observe this warning may result in damage to the device or system.
Indicates additional information, advice or important recommendations.
Refers to information contained in this manual or in other documents.
▶Indicates an instruction to be carried out to avoid a danger, a warning or a possible risk.
→Indicates a procedure to be carried out.
Indicates the result of a specific instruction.
2 INTENDED USE
Use of this device that does not comply with the instructions could present risks to people, nearby
installations and the environment.
The device is intended solely for the measurement of:
- the pH in clean liquids or liquids containing solids, sulphides or proteins.
- or the oxidation reduction potential in clean liquids or liquids containing solids, sulphides or proteins which
may present low conductivity.
▶Use this device in compliance with the characteristics and commissioning and use conditions specified in the
contractual documents and in the user manual.
▶Never use this device for security applications.
▶Protect this device against electromagnetic interference, ultraviolet rays and, when installed outdoors, the
effects of climatic conditions.
▶Use this device only if in perfect working order.
▶Requirements for the safe and proper operation of the device are proper transport, storage and installation, as
well as careful operation and maintenance.
▶Only use the device as intended.
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Typ 8202 ELEMENT

9
Basic safety information
3 BASIC SAFETY INFORMATION
This safety information does not take into account:
• any contingencies or occurrences that may arise during assembly, use and maintenance of the device.
• the local safety regulations that the operator must ensure the staff in charge of installation and maintenance
observe.
Danger due to electrical voltage.
▶Disconnect the electrical power for all the conductors and isolate it before carrying out work on the system.
▶If a 12-36 V DC or a 14-36 V DC powered version is installed either in a wet environment or outdoors, all the
electrical voltages must be of max. 35 V DC.
▶All equipment connected to the 8619 shall be double insulated with respect to the mains according to the
standard IEC 61010-1:2010.
▶Observe all applicable accident protection and safety regulations for electrical equipment.
Danger due to high pressure in the installation.
▶Stop the circulation of fluid, cut off the pressure and drain the pipe before loosening the process connections.
Danger due to high temperatures of the fluid.
▶Use safety gloves to handle the device.
▶Stop the circulation of fluid and drain the pipe before loosening the process connections.
Danger due to the nature of the fluid.
▶Respect the prevailing regulations on accident prevention and safety relating to the use of aggressive fluids.
Various dangerous situations.
To avoid injury take care:
▶not to use the device in explosive atmospheres.
▶not to use the device in an environment incompatible with the materials it is made of.
▶not to use fluid that is incompatible with the materials the device is made of.
▶not to subject the device to mechanical loads.
▶not to make any modifications to the device.
▶to prevent any unintentional power supply switch-on.
▶to carry out the installation and maintenance work by qualified and skilled staff with the appropriate tools.
▶to guarantee a defined or controlled restarting of the process, after a power supply interruption.
▶to observe the general technical rules when installing and using the device.
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Typ 8202 ELEMENT

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Basic safety information
NOTE
The device may be damaged by the fluid in contact with.
▶Systematically check the chemical compatibility of the component materials of the device and the fluids likely
to come into contact with it (for example: alcohols, strong or concentrated acids, aldehydes, alkaline com-
pounds, esters, aliphatic compounds, ketones, halogenated aromatics or hydrocarbons, oxidants and chlorin-
ated agents).
NOTE
Elements / Components sensitive to electrostatic discharges
▶This device contains electronic components sensitive to electrostatic discharges. They may be damaged if
they are touched by an electrostatically charged person or object. In the worst case scenario, these compo-
nents are instantly destroyed or go out of order as soon as they are activated.
▶To minimise or even avoid all damage due to an electrostatic discharge, take all the precautions described in
the EN 61340-5-1 norm.
▶Also ensure that you do not touch any of the live electrical components.
4 GENERAL INFORMATION
4.1 Manufacturer's address and international contacts
To contact the manufacturer of the device, use following address:
Bürkert SAS
Rue du Giessen
BP 21
F-67220 TRIEMBACH-AU-VAL
You may also contact your local Bürkert sales office.
The addresses of our international sales offices are available on the internet at: www.burkert.com
4.2 Warranty conditions
The condition governing the legal warranty is the conforming use of the device in observance of the operating
conditions specified in this manual.
4.3 Information on the Internet
You can find the user manuals and technical data sheets regarding the transmitter type 8202 at:
www.burkert.com
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Description
5 DESCRIPTION
5.1 Area of application
The device is intended solely for the measurement of:
• the pH in clean liquids or liquids containing solids, sulphides or proteins.
• or the oxidation reduction potential ("ORP") in clean liquids or liquids containing solids, sulphides or proteins
which may present low conductivity.
Thanks to two fully adjustable transistor outputs, the transmitter can be used to switch a solenoid valve, activate
an alarm and, thanks to one or two 4-20-mA current outputs, establish one or two control loops.
5.2 General description
5.2.1 Construction of the 8202
The device comprises:
• a module for measuring process values, comprising:
- a pH or Redox ("ORP") sensor measuring a potential difference (PD) in mV
- a Pt1000 temperature sensor built in the holder of the pH or Redox ("ORP") sensor, measuring a resistance.
• an acquisition / conversion module for the process values measured:
- measured PD acquisition in mV
- conversion of the measured PD into pH units (for a transmitter with pH sensor only)
- acquisition of the resistance measured and conversion into temperature
• an electrical housing which can include a display module. The display module has a navigation button used
to read and/or configure the parameters of the device. The display module is available as an accessory (see
chap. 11).
One version of the device with two transistor outputs and a 4-20 mA output operates on a 2-wire system and
requires a power supply of 14-36 V DC. For such a version, electrical connection is done via an M12, 5-point,
male fixed connector.
One version of the device with two transistor outputs and two 4-20 mA outputs operates on a 3-wire system and
requires a power supply of 12-36 V DC. For such a version, electrical connection is done via an M12, 5-point,
male fixed connector and an M12, 5-point, female fixed connector.
5.2.2 pH or Redox ("ORP") probe
The device can be fitted with a standard probe 120 mm long, measuring the pH or the oxidation reduction
potential ("ORP").
It is screwed into a holder with the built-in Pt1000 temperature probe.
• The pH probe is a glass membrane with variable sensitivity according to the pH. When the pH probe is
immersed in a solution, a difference in potential is formed, due to the hydrogen ions (H+), between the glass
membrane and the solution. This difference in potential, measured in relation to a reference electrode, is directly
proportional to the pH value (59.16 mV per pH unit at 25°C).
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Typ 8202 ELEMENT

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Description
• When a Redox ("ORP") probe is immersed in a solution, an exchange of electrons occurs based on the oxi-
dizing and reducing effects of an electrolyte. The resulting voltage is the oxidation reduction potential ("ORP").
5.3 Description of the name plate
8202 pH/ORP Transmitter V2
Supply: 14-36V 40W Max
Output: 1x 4-20mA 2x Trans 1A Max
Cell: pH -2/16 ORP +-2V 120mm PG13.5
Process: Temp 0/50°C limited by cell
PN 16 Bar limited by cell
IP65 -IP67 W41MT
S-N:3054
00559630
Made in France
1
2
3
4
5
6
7
8
9
10
11
1:V+
2:NPN/PNP1
3:0V
4:NPN/PNP2
1. Type of device, parameter measured and
version
2. Electrical power supply and power
consumption
3. Output specifications
4. Sensor specifications
5. Temperature range of the fluid, without sensor
6. Nominal pressure of the fluid, without sensor
7. Allocation of the pins on the M12 fixed
connectors
8. Construction code
9. Order code
10. Serial number
11. Protection rating
Fig. 1 Name plate on the transmitter type 8202
5.4 Available versions
The following versions of the device are available. These references include the electronic module and the sensor
holder including the Pt1000.
The pH/Redox ("ORP") sensor, the display module and the fitting for connection to the process should be
ordered separately. For the pH/Redox ("ORP") sensor and the display module, see the list of accessories in
Chapter 11.
Voltage supply Outputs Electrical
connection Sensor Nut material UL Order code
14-36 V DC 2 transistors +
1 x 4-20 mA
Male 5-pin M12
fixed connector
without PVC no 559 630
yes 559 634
PVDF no 559 632
yes 559 636
12-36 V DC 2 transistors +
2 x 4-20 mA
Male 5-pin M12
fixed connector
+ female 5-pin
M12 fixed
connector
without PVC no 559 631
yes 559 635
PVDF no 559 633
yes 559 637
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Typ 8202 ELEMENT

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Technical data
6 TECHNICAL DATA
6.1 Conditions of use
Ambient temperature -10 to +60 °C ( without pH or Redox ("ORP") probe)
Air humidity < 85%, non condensated
Protection rating according to
EN 60529
IP65 and IP67 with connectors plugged in and tightened and electronic
module cover fully sealed
6.2 Conformity to standards and directives
The device conforms to the CE directives through the following standards:
• EMC: EN 61000-6-2, EN 61000-6-3
• Vibration: EN 60068-2-6
• Shock: EN 60068-2-27
• Pressure: complying with article 3§3 of the pressure equipment directive 97/23/CE. According to this directive,
the device can only be used in the following cases (depending on max. pressure, pipe diameter and fluid):
Type of fluid Conditions
Fluid group 1, §1.3.a only DN25
Fluid group 2, § 1.3.a DN ≤ 32
or DN > 32 and PNxDN ≤ 1000
Fluid group 1, § 1.3.b DN ≤ 25
or DN > 25 and PNxDN ≤ 2000
Fluid group 2, § 1.3.b DN ≤ 125
The UL devices conform to the following standards:
• UL 61010-1
• CAN/CSA-C22.2 n° 61010-1
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Technical data
6.3 Mechanical data
PC
silicone
PPS
EPDM
PPS
PVDF
PVC or PVDF
EPDM
PVDF
Stainless steel
1.4571 (316Ti)
Stainless steel
Nickel-plated brass
(or stainless steel)
pH/Redox ("ORP")
probe
Part Material
Box / seals stainless steel, PPS /
EPDM
Cover / seal PC / silicone
Display module PC / PBT
M12 fixed connector nickel-plated brass
(stainless steel on
request)
Fixed connector
holder
stainless steel 1.4404
(316L)
Screws stainless steel
Nut PVC or PVDF
Sensor holder / seal
(in contact with the fluid) PVDF, stainless steel
1.4571 (316Ti) /
EPDM
pH or Redox ("ORP")
probe
refer to the related
manual
Fig. 2 Materials used in the transmitter type 8202 (without the probe)
6.4 Dimensions of the 8202
→Please refer to the technical data sheets regarding the transmitter type 8202, available at: www.burkert.com
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Typ 8202 ELEMENT

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Technical data
6.5 Fluid data
Pipe diameter DN25 to DN110
(DN15 to DN20 under specific conditions)
Type of fitting Adapter S022
Nut between the 8202 and the fitting G 1 1/2'' internal thread
Max. fluid temperature The fluid temperature may be restricted by the probe used
(see the related instruction manual), by the pressure of
the fluid and the material of the adapter S022
• with a PVDF nut (see also Fig. 3 and Fig. 5) • -20 to +130 °C
• with a PVC nut (see also Fig. 3 and Fig. 4) • 0 to +50 °C
Max. fluid pressure PN16
The fluid pressure may be restricted by the probe used
(see the related instruction manual), by the temperature of
the fluid and the material of the adapter S022 (see Fig. 3,
Fig. 4 and Fig. 5)
pH measurement
• Measurement range • -2 to 16 pH or -580 to +580 mV
• Resolution • 0.001 pH or 0.1 mV
• Measurement deviation • ±0.02 pH or 0.5 mV
• Recommended min. divergence of the pH range
associated to the 4-20 mA signal
• 0.5 pH unit or 30 mV (eg: range 6,7 to 7,2 pH or -20 mV
to +10 mV associated to the 4-20 mA output current)
Redox potential ("ORP") measurement
• Measurement range • -2000 mV to +2000 mV
• Resolution • 1 mV
• Measurement deviation • ±3 mV
• Recommended min. divergence of the redox potential
("ORP") range associated to the 4-20 mA signa
• 50 mV (eg: range 1550 to 1600 mV associated to the
4-20 mA output current)
Temperature measurement
• Measurement range • -40 °C to +130 °C
• Resolution • 0.1 °C
• Measurement deviation • ±1 °C
• Recommended min. divergence of the temperature
range associated to the 4-20 mA signal
• 10 °C (eg: range 10 to 20 °C associated to the
4-20 mA output current)
Temperature probe Pt1000 integrated in the sensor holder
Temperature compensation Automatic (integrated Pt1000),
Reference temperature = 25°C
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Typ 8202 ELEMENT

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Technical data
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0 -20 0 +20 +40 +60 +80 +100 +120
T ( ° C)
P (bar)
A
PVDF
PVC
B
+140
232
217.6
203
188.6
174
159.6
145
130.6
116
101.6
87
72.5
58
43.5
29
14
0
P (psi)
PVDF
• A: application range of a 8202 with a PVDF nut
• B: application range of a 8202 with a PVC nut
The measures have been made at an ambient
temperature of 60 °C
P = Fluid pressure
T = Fluid temperature
Fig. 3 Fluid temperature / pressure dependency of the 8202 (without the probe) with a PVC or PVDF nut
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
00 +20 +40 +60 T (°C)
P (bar)
PVC + PP
-20
232
217.6
203
188.6
174
159.6
145
130.6
116
101.6
87
72.5
58
43.5
29
14
0
P (psi)
Metal
P = Fluid pressure
T = Fluid temperature
Fig. 4 Fluid temperature / pressure dependency of the 8202 (without the probe) with a PVC nut and a metal, PVC or PP
S022 adapter
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
0-20 0 +20 +40 +60 +80 +100 +140
PVC
PP
T (°C)
P (bar)
PVC + PP
+120
232
217.6
203
188.6
174
159.6
145
130.6
116
101.6
87
72.5
58
43.5
29
14
0
P (psi)
Metal
P = Fluid pressure
T = Fluid temperature
Fig. 5 Fluid temperature / pressure dependency of the 8202 (without the probe) with a PVDF nut and a metal, PVC or
PP S022 adapter
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17
Technical data
6.6 Electrical data
Power supply
• Version with 3 outputs • 14-36 V DC, filtered and regulated
• Version with 4 outputs • 12-36 V DC, filtered and regulated
Characteristics of the power source (not supplied)
of the UL versions
• limited energy source (in accordance to UL 61010-1,
paragraph 9.3)
• or Class 2 source (in accordance to standards
1310/1585 and 60950-1)
Current consumption
• Version with 3 outputs • 25 mA max. (at 14 V DC)
• Version with 4 outputs • 5 mA max. (at 12 V DC)
Current consumption, with loads on the transistors 1 A max.
Power consumption 40 W max.
Protection against polarity reversal yes
Protection against voltage spikes yes
Protection against short circuits yes, transistor outputs
Transistor output NPN (/sink) or PNP (/source) (depending on software
setting), open collector, 700 mA max., 0.5 A max. per
transistor if both transistor outputs are wired.
NPN output: 0.2-36 V DC
PNP output: supply voltage
Current output 4-20 mA, sink ("NPN sink") or source ("PNP source")
(depending on software setting)
• Response time (10 % - 90 %) • 150 ms (default value)
• Version with 1 current output • max. loop impedance: 1100 W at 36 V DC, 610 W at
24 V DC, 180 W at 14 V DC
• Version with 2 current outputs • max. loop impedance: 1100 W at 36 V DC, 610 W at
24 V DC, 100 W at 12 V DC
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Technical data
6.7 Data of connectors and cables
Number of fixed connectors Type of connectors
1 male M12 fixed connector 5-pin female M12 connector (not supplied).
For the M12 connector with order code 917116, use a shielded
cable:
• diameter: 3 to 6.5 mm
• wire cross section: max. 0.75 mm2
1 male M12 fixed connector and 1 female
M12 fixed connector
5-pin female M12 connector (not supplied) and 5-pin male M12
connector (not supplied).
For the M12 connector with order code 917116, use a shielded
cable:
• diameter: 3 to 6.5 mm
• wire cross section: max. 0.75 mm2
6.8 pH/Redox ("ORP") probe
The pH or redox ("ORP") probe must satisfies the following specifications:
• combined probe;
• length: 120 mm;
• with PG 13.5 head;
• with an S7/S8 fixed connector;
• without temperature probe.
The specifications of the probe can be found in the manual of the probe used.
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19
Assembly
7 ASSEMBLY
7.1 Safety instructions
DANGER
Risk of injury due to electrical voltage.
▶Shut down and isolate the electrical power source before carrying out work on the system.
▶Observe all applicable accident protection and safety regulations for electrical equipment.
WARNING
Risk of injury due to non-conforming assembly.
▶The device must only be assembled by qualified and skilled staff with the appropriate tools.
Risk of injury due to unintentional switch on of power supply or uncontrolled restarting of the
installation.
▶Take appropriate measures to avoid unintentional activation of the installation.
▶Guarantee a defined or controlled restarting of the process after any intervention on the device.
7.2 Removing the cover
NOTE
The tightness of the device is not guaranteed when the cover is removed.
▶Once the cover is removed, prevent ingress of liquid inside the housing.
The device may be damaged if a metal component comes into contact with the electronics.
▶Prevent contact of the electronics with a metal component.
2
1
→[1] Turn the cover counterclockwise with
an angle of about 15° to unlock it.
→[2] Remove the cover.
If the cover grips to the housing:
→Use an appropriate tool to unlock the
cover, taking care not to scratch the glass.
→Insert an apropriate tool into the groove of
the housing.
→Lever the cover up.
Fig. 6 Removing the cover
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Typ 8202 ELEMENT

20
Assembly
7.3 Mounting the cover
1
2
→Check that there is a seal on the housing and that it is not damaged. Replace
it if necessary.
→Grease the seal if necessary, using a component compatible with the seal
material.
→[1] Set the cover to ensure that the 4 grooves of the cover match with the 4
pins of the housing.
→[2] Turn the cover clockwise with an angle of about 15° to lock it.
Fig. 7 Closing the cover
7.4 Mounting the display module
20° →Remove the cover (see chap. 7.2).
→Set the display module at an angle of about 20° in relation to
the desired position.
a)
b)
c)
d)
→The module can be mounted in 4 different positions, at 90°
intervals.
→Fully push in the module and turn clockwise to lock it.
Fig. 8 Mounting the display module
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Typ 8202 ELEMENT