Burkert 8221 User manual

Operating Instructions
Bedienungsanleitung
Manuel d‘utilisation
Type 8221
Conductivity sensor
Leitfähigkeitssensor
Sonde de conductivité

We reserve the right to make technical changes without notice.
Technische Änderungen vorbehalten.
Sous réserve de modifications techniques.
© Bürkert SAS, 2013 - 2019
Operating Instructions 1901/02_EU-ML_00565354_Original_FR

Type 8221
1. ABOUT THE OPERATING INSTRUCTIONS .......................................4
1.1. Symbols used .............................................................................. 4
1.2. Definition of the word product ................................................. 4
2. INTENDED USE ................................................................................................5
3. BASIC SAFETY INFORMATION ...............................................................5
4. GENERAL INFORMATION ...........................................................................6
4.1. International contacts.................................................................6
4.2. Warranty conditions ................................................................... 6
4.3. Information on the internet ........................................................6
5. RATING PLATE ..................................................................................................7
6. TECHNICAL DATA ...........................................................................................7
6.1. Conformity to standards and directives................................. 7
6.2. Conformity to the pressure equipment directive ................. 7
6.3. Materials ........................................................................................9
6.4. General technical data ............................................................10
6.5. Dimensions .................................................................................16
7. INSTALLATION ...............................................................................................16
7.1. Safety instructions ....................................................................16
7.2. Product with 2 electrodes and a clamp connection .........17
7.3. Product with a G1¼'' connection .........................................20
7.4. Product with a G1'', a G¾'' or a NPT¾'' connection .......21
7.5. Product with 4 electrodes and a clamp connection .........22
7.6. Product with a 2'' (DN50/40) connection ...........................24
7.7. Product with a PG13.5 connection ......................................24
7.8. Product with a PG13.5 connection onto a direct
welding holder ...........................................................................24
7.9. Product with a PG13.5 connection onto a G1¼''
threaded hygienic holder ........................................................25
7.10. Product with a PG13.5 connection onto a
hygienic holder with clamp connection ..........................26
8. WIRING ...............................................................................................................26
8.1. Product with 4 electrodes and a cable, process
connection 1½'' clamp or G1¼'' ...........................................26
8.2. Product with 4 electrodes and a VarioPin con-
nector, process connection 1½'' clamp, 2'' clamp
or 2'' (DN50/40)........................................................................27
8.3. Product with 4 electrodes, with PG13.5 connection .......28
8.4. Product with 2 electrodes and a cable................................28
8.5. Product with 2 electrodes and a 5-pin M12 male
connector....................................................................................29
9. CALIBRATION ................................................................................................. 29
9.1. Calibration while the product is disassembled from
process .......................................................................................29
9.2. Calibration in the process .......................................................30
10. MAINTENANCE AND TROUBLESHOOTING ................................ 30
10.1. Safety instructions ...................................................................30
10.2. Maintenance of the product ..................................................31
11. SPARE PARTS AND ACCESSORIES ...............................................31
12. PACKAGING, TRANSPORT ...................................................................32
13. STORAGE .......................................................................................................32
14. DISPOSAL OF THE PRODUCT ........................................................... 32
Table of contents
3
English

1. ABOUT THE OPERATING
INSTRUCTIONS
The Operating Instructions describe the entire life cycle of the
product. Please keep the Operating Instructions in a safe place,
accessible to all users and any new owners.
The Operating Instructions contain important safety
information.
Failure to comply with these instructions can lead to hazardous
situations. Pay attention in particular to the chapters "3. Basic
safety information" and "2. Intended use".
▶Whatever the version of the product, the Operating Instructions
must be read and understood.
1.1. Symbols used
danger
Warns against an imminent danger.
▶Failure to observe this warning results 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.
CaUTiOn
Warns against a possible risk.
▶Failure to observe this warning can result in substantial or minor
injuries.
nOTiCe
Warns against material damage.
Indicates additional information, advice or important
recommendations.
Refers to information contained in these Operating Instruc-
tions 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.
1.2. Definition of the word product
The word "product" used in these Operating Instructions always
refers to the conductivity sensor Type 8221.
4
About the Operating Instructions
Type 8221
English

2. INTENDED USE
Use of the product that does not comply with the instructions
could present risks to people, nearby installations and the
environment.
The product is intended to measure the electrolytic conductivity of
a solution.
▶Use the product only in combination with foreign devices or
foreign components recommended or approved by Bürkert.
▶Use the product in compliance with the characteristics and
commissioning and use conditions specified in the contractual
documents and in the Operating Instructions.
▶Never use the product for security applications.
▶Store, transport, install and operate the product properly.
▶Only operate a product in perfect working order.
▶Only use the product as intended.
3. BASIC SAFETY INFORMATION
This safety information does not take into account any contingencies
or occurrences that may arise during installation, use and mainte-
nance of the product.
The operating company is responsible for the respect of the local
safety regulations including for the staff safety.
Risk of injury due to high pressure in the installation.
▶Before any intervention on the installation, stop the circulation of
fluid, cut off the pressure and drain the pipe.
▶Observe the dependency between the fluid temperature and the
fluid pressure. See Fig. 2 chap. 6.4.
Risk of burn injury due to electrical voltage.
▶Observe all applicable accident protection and safety regula-
tions for electrical equipment.
Risk of burn injury due to high fluid temperatures.
▶Do not touch with bare hands the parts of the product that are
in contact with the fluid.
▶Before opening the pipe, stop the circulation of fluid and drain
the pipe.
Risk of injury due to the nature of the fluid.
▶Respect the prevailing regulations on accident prevention and
safety relating to the use of dangerous fluids.
5
Intended use
Type 8221
English

Various dangerous situations.
To avoid injury:
▶Do not use the product in explosive atmospheres.
▶Do not use the product in an environment incompatible with the
materials it is made of.
▶Do not use fluid that is incompatible with the materials the
product is made of.
▶Do not subject the product to mechanical stress.
▶Do not make any modifications to the product.
▶Prevent any unintentional power supply switch-on.
▶Only qualified and skilled staff can carry out the installation and
maintenance work.
▶Guarantee a defined or controlled restarting of the process,
after a power supply interruption.
▶Observe the general technical rules.
nOTiCe
The product may be damaged by the measured fluid.
▶Systematically check the chemical compatibility of the com-
ponent materials of the product and the fluids likely to come
into contact with the materials (for example: alcohols, strong
or concentrated acids, aldehydes, alkaline compounds, esters,
aliphatic compounds, ketones, halogenated aromatics or hydro-
carbons, oxidants and chlorinated agents).
4. GENERAL INFORMATION
4.1. International contacts
The addresses of our international sales offices are available on the
last page of these Operating Instructions.
They are also available on the internet at: www.burkert.com
4.2. Warranty conditions
The condition governing the legal warranty is the conforming use of
the product in observance of the operating conditions specified in
these Operating Instructions.
4.3. Information on the internet
You can find the Operating Instructions and technical data sheets
related to the Type 8221 at: www.burkert.com
6
General information
Type 8221
English

5. RATING PLATE
COND 8221 PEEK SST CLAMP
ID-Nr: 00564064
REF 243641 T: -20...135°C
LOT 1234567 p: 0...6 bar
SN 1001 2018-12-04 0,1...500000 uS/cm
12
4
3
78
5
6
9
10
11
1. Measured quantity and type of the product
2. Materials
3. Type of connection
4. Fluid temperature range
5. Fluid pressure range
6. Fluid conductivity measurement range (µS/cm)
7. Manufacturing code
8. Serial number
9. Lot number
10. Internal code
11. Article number
Fig. 1: Rating plate of a product with 4 electrodes (example)
6. TECHNICAL DATA
The rating plate of the product gives important technical data.
▶Always respect the data given on the rating plate.
6.1. Conformity to standards and
directives
The applied standards, which verify conformity with the EU direc-
tives, can be found on the EU-type examination certificate and/or the
EU declaration of conformity (if applicable).
6.2. Conformity to the pressure
equipment directive
→Make sure the product materials are compatible with the fluid.
→Make sure the pipe DN and the PN are adapted for the product.
The product conforms to Article 4, Paragraph 1 of the Pressure
Equipment Directive 2014/68/EU under the following conditions:
7
Rating plate
Type 8221
English

• Product used on a piping (PS = maximum admissible pressure;
DN = nominal diameter of the pipe)
Type of fluid Conditions
Fluid group 1, Article 4, Paragraph 1.c.i DN≤25
Fluid group 2, Article 4, Paragraph 1.c.i DN≤32
or PSxDN≤1000
Fluid group 1, Article 4, Paragraph 1.c.ii DN≤25
or PSxDN≤2000
Fluid group 2, Article 4, Paragraph 1.c.ii
DN≤200
or PS≤10
or PSxDN≤5000
• Product used on a vessel (PS = maximum admissible pressure)
Type of fluid Conditions
Fluid group 1, Article 4, Paragraph 1.a.i PS ≤ 200 bar
Fluid group 2, Article 4, Paragraph 1.a.i PS ≤ 1000 bar
Fluid group 1, Article 4, Paragraph 1.a.ii PS ≤ 500 bar
Fluid group 2, Article 4, Paragraph 1.a.ii PS ≤ 1000 bar
8
Technical data
Type 8221
English

6.3. Materials
Process
connection
Electrical
connection
Number of
electrodes
Materials Surface finish
Electrodes Frame Seal
1½'' clamp 5-pin M12 male
connector 2Stainless steel 316L Stainless steel 316L
PEEK with FDA approval
(CFR 177.2415)
EPDM with
FDA approval
(CFR 177.2600)
0.4 µm,
electro-polished
G1'' 5-pin M12 male
connector 2Stainless steel 316L
G¾''
NPT¾''
1½'' clamp Cable 2 Stainless steel Stainless steel
PTFE EPDM
1½'' clamp,
short and long
VarioPin male
connector 4
Stainless steel
1.4435/316L
Stainless steel
1.4435/316L
PEEK with FDA approval
EPDM with FDA
approval
1½'' clamp,
short and long Cable 4Stainless steel
1.4435/316L
PEEK with FDA approval
(CFR 177.2415)
G1¼'' 4
2'' clamp
VarioPin male
connector
4
2'' (DN50/40)* 4
PG13.5 4 PEEK with FDA approval
(CFR 177.2415)
* Adapted for GEA Tuchenhagen VARINLINE process connections
9
Technical data
Type 8221
English

6.4. General technical data
→Obey the dependency between the liquid temperature and liquid
pressure, given in Fig. 2.
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 +140
20
19
18
17
Liquid pressure [bar]
Liquid temperature [°C]
Operating range for conductivity sensors with 4 elec-
trodes and connection: 2'' clamp, 2'' (DN50/40) adapted
for GEA Tuchenhagen VARINLINE process connections,
PG13.5
Operating range for conductivity sensors with 2 elec-
trodes, with 5-pin M12 male connector and process con-
nection: 1½'' clamp, G1", G¾" and NPT¾"
Operating range for conductivity sensors with 2 elec-
trodes and connection 1½'' clamp with M12 connector
Operating range for conductivity sensors with 2 elec-
trodes and connection 1½'' clamp with cable
Operating range for conductivity sensors with 4 elec-
trodes and connection: G1¼'', 1½'' clamp (short and long
insertion depth)
Fig. 2: Liquid temperature / liquid pressure dependency diagram
10
Technical data
Type 8221
English

• 2 electrodes
• 1½'' clamp connection
• 5-pin M12 male connector
Article number 568818 569643
Measurement range 0.05...20 µS.cm–1 1...200 µS.cm–1
Linearity 1) (relative) ±0.5...5 %
Cell constant 2) 0.01 cm–1 0.1 cm–1
Fluid temperature –20...+150 °C
Fluid pressure PN16 at –20...+120 °C
PN10 at +120...+150 °C
Temperature sensor Pt1000
Electrical connection 5-pin M12 male connector
1) Uncertainty of ±5 % arises when using only one single cell constant for
the full range. ±0.5 % measurement deviation can be achieved when
calibration is performed in a conductivity range close to that of the used
solution.
2) Nominal cell constant.
Every product is measured according to a Bürkert standard procedure
and the individual cell constant measured is reported in the calibration
report, delivered with the product. The cell constant can be influenced by
the assembly situation.
• 2 electrodes
• G1'' connection
• 5-pin M12 male connector
Article number 569644 569645
Measurement range 0.05...20 µS.cm–1 1...200 µS.cm–1
Linearity 1) (relative) ±0.5...5 %
Cell constant 2) 0.01 cm–1 0.1 cm–1
Fluid temperature –20...+150 °C
Fluid pressure PN16 at –20...+120 °C
PN10 at +120...+150 °C
Temperature sensor Pt1000
Electrical connection 5-pin M12 male connector
1) Uncertainty of ±5 % arises when using only one single cell constant for
the full range. ±0.5 % measurement deviation can be achieved when
calibration is performed in a conductivity range close to that of the used
solution.
2) Nominal cell constant.
Every product is measured according to a Bürkert standard procedure
and the individual cell constant measured is reported in the calibration
report, delivered with the product. The cell constant can be influenced by
the assembly situation.
11
Technical data
Type 8221
English

• 2 electrodes
• G ¾'' connection
• 5-pin M12 male connector
Article number 570452 570453
Measurement range 0.05...20 µS.cm–1 1...200 µS.cm–1
Linearity 1) (relative) ±0.5...5 %
Cell constant 2) 0.01 cm–1 0.1 cm–1
Fluid temperature –20...+150 °C
Fluid pressure PN16 at –20...+120 °C
PN10 at +120...+150 °C
Temperature sensor Pt1000
Electrical connection 5-pin M12 male connector
1) Uncertainty of ±5 % arises when using only one single cell constant for
the full range. ±0.5 % measurement deviation can be achieved when
calibration is performed in a conductivity range close to that of the used
solution.
2) Nominal cell constant.
Every product is measured according to a Bürkert standard procedure
and the individual cell constant measured is reported in the calibration
report, delivered with the product. The cell constant can be influenced by
the assembly situation.
• 2 electrodes
• NPT ¾'' connection
• 5-pin M12 male connector
Article number 570454 570455
Measurement range 0.05...20 µS.cm–1 1...200 µS.cm–1
Linearity 1) (relative) ±0.5...5 %
Cell constant 2) 0.01 cm–1 0.1 cm–1
Fluid temperature –20...+150 °C
Fluid pressure PN16 at –20...+120 °C
PN10 at +120...+150 °C
Temperature sensor Pt1000
Electrical connection 5-pin M12 male connector
1) Uncertainty of ±5 % arises when using only one single cell constant for
the full range. ±0.5 % measurement deviation can be achieved when
calibration is performed in a conductivity range close to that of the used
solution.
2) Nominal cell constant.
Every product is measured according to a Bürkert standard procedure
and the individual cell constant measured is reported in the calibration
report, delivered with the product. The cell constant can be influenced by
the assembly situation.
12
Technical data
Type 8221
English

• 2 electrodes
• 1½'' clamp connection
• Cable
Article
number 564898 562261 564899
Measurement
range 0.05...20 µS. cm–1 1...200 µS. cm–1 5...5000 µS.cm–1
Linearity 1)
(relative) ±0.5...5 %
Cell
constant 2) 0.01 cm–1 0.1 cm–1 1 cm–1
Fluid
temperature max. +120 °C
Fluid
pressure max. 7 bar (100 psi)
Temperature
sensor Pt1000
Electrical
connection Cable, length 3 m, instrument side with open wire.
1) Uncertainty of ±5 % arises when using only one single cell constant for the
full range. ±0.5 % measurement deviation can be achieved when calibration
is performed in a conductivity range close to that of the used solution.
2) Nominal cell constant.
Every product is measured according to a Bürkert standard procedure
and the individual cell constant measured is reported in the calibration
report, delivered with the product. The cell constant can be influenced by
the assembly situation.
• 4 electrodes
• 1½'' clamp connection, short or
long insertion depth
• VarioPin male connector
Article number 562420 (short), 564064 (long)
Measurement range 0.1...500000 µS.cm–1
Linearity 1) (relative) ±0.5...5 %
Cell constant 2) 0.147 cm–1
Fluid temperature –20...+135 °C
Fluid pressure max. 6 bar (87 psi)
Temperature sensor Pt1000
Electrical connection VarioPin (VP 6.0) male connector
1) Uncertainty of ±5 % arises when using only one single cell constant for
the full range. ±0.5 % measurement deviation can be achieved when
calibration is performed in a conductivity range close to that of the used
solution.
2) Nominal cell constant.
Every product is measured according to a Bürkert standard procedure
and the individual cell constant measured is reported in the calibration
report, delivered with the product. The cell constant can be influenced by
the assembly situation.
13
Technical data
Type 8221
English

• 4 electrodes
• 1½'' clamp connection, short or
long insertion depth
• Cable
Article number 557719 (short), 558884 (long)
Measurement range 0.1...500000 µS.cm–1
Linearity 1) (relative) ±0.5...5 %
Cell constant 2) 0.147 cm–1
Fluid temperature –20...+135 °C
Fluid pressure max. 6 bar (87 psi)
Temperature sensor Pt1000
Electrical connection High temperature cable, length 5 m,
instrument side with open wire.
1) Uncertainty of ±5 % arises when using only one single cell constant for
the full range. ±0.5 % measurement deviation can be achieved when
calibration is performed in a conductivity range close to that of the used
solution.
2) Nominal cell constant.
Every product is measured according to a Bürkert standard procedure
and the individual cell constant measured is reported in the calibration
report, delivered with the product. The cell constant can be influenced by
the assembly situation.
• 4 electrodes
• G1¼'' connection
• Cable
Article number 562240
Measurement range 0.1...500000 µS.cm–1
Linearity 1) (relative) ±0.5...5 %
Cell constant 2) 0.147 cm–1
Fluid temperature –20...+135 °C
Fluid pressure max. 6 bar (87 psi)
Temperature sensor Pt1000
Electrical connection High temperature cable, length 5 m,
instrument side with open wire.
1) Uncertainty of ±5 % arises when using only one single cell constant for
the full range. ±0.5 % measurement deviation can be achieved when
calibration is performed in a conductivity range close to that of the used
solution.
2) Nominal cell constant.
Every product is measured according to a Bürkert standard procedure
and the individual cell constant measured is reported in the calibration
report, delivered with the product. The cell constant can be influenced by
the assembly situation.
14
Technical data
Type 8221
English

• 4 electrodes
• 2'' clamp connection
• VarioPin male connector
Article number 559120
Measurement range 0.1...500000 µS.cm–1
Linearity 1) (relative) ±0.5...5 %
Cell constant 2) 0.360 cm–1
Fluid temperature –20...+150 °C
Fluid pressure max. 20 bar (290 psi) at –20...+135 °C
max. 10 bar (145 psi) at +150 °C
Temperature sensor Pt1000
Electrical connection VarioPin (VP 6.0) male connector
1) Uncertainty of ±5 % arises when using only one single cell constant for
the full range. ±0.5 % measurement deviation can be achieved when
calibration is performed in a conductivity range close to that of the used
solution.
2) Nominal cell constant.
Every product is measured according to a Bürkert standard procedure
and the individual cell constant measured is reported in the calibration
report, delivered with the product. The cell constant can be influenced by
the assembly situation.
• 4 electrodes
• 2'' (DN50/40) connection, adapted
for GEA Tuchenhagen VARINLINE
process connections
• VarioPin male connector
Article number 563269
Measurement range 0.1...500000 µS.cm–1
Linearity 1) (relative) ±0.5...5 %
Cell constant 2) 0.360 cm–1
Fluid temperature –20...+150 °C
Fluid pressure max. 20 bar (290 psi) at –20...+135 °C
max. 10 bar (145 psi) at +150 °C
Temperature sensor Pt1000
Electrical connection VarioPin (VP 6.0) male connector
1) Uncertainty of ±5 % arises when using only one single cell constant for
the full range. ±0.5 % measurement deviation can be achieved when
calibration is performed in a conductivity range close to that of the used
solution.
2) Nominal cell constant.
Every product is measured according to a Bürkert standard procedure
and the individual cell constant measured is reported in the calibration
report, delivered with the product. The cell constant can be influenced by
the assembly situation.
15
Technical data
Type 8221
English

• 4 electrodes
• PG13.5 connection
• VarioPin male connector
Article number 563186
Measurement range 0.1...500000 µS.cm–1
Linearity 1) (relative) ±0.5...5 %
Cell constant 2) 0.360 cm–1
Fluid temperature –20...+150 °C. max
Fluid pressure max. 20 bar (290 psi) at –20...+135 °C
max. 10 bar (145 psi) at +150 °C
Temperature sensor Pt1000
Electrical connection VarioPin (VP 6.0) male connector
1) Uncertainty of ±5 % arises when using only one single cell constant for the
full range. ±0.5 % measurement deviation can be achieved when calibration
is performed in a conductivity range close to that of the used solution.
2) Nominal cell constant.
Every product is measured according to a Bürkert standard procedure
and the individual cell constant measured is reported in the calibration
report, delivered with the product. The cell constant can be influenced by
the assembly situation.
6.5. Dimensions
→Please refer to the technical data sheets related to the product
at: www.burkert.com
7. INSTALLATION
7.1. Safety instructions
danger
Risk of injury due to high pressure in the installation.
▶Before any intervention on the installation, stop the circulation of
fluid, cut off the pressure and drain the pipe.
▶Observe the dependency between the fluid temperature and the
fluid pressure. See Fig. 2 chap. 6.4.
Risk of burn injury due to electrical voltage.
▶Observe all applicable accident protection and safety regula-
tions for electrical equipment.
Risk of burn injury due to high fluid temperatures.
▶Do not touch with bare hands the parts of the product that are
in contact with the fluid.
▶Before opening the pipe, stop the circulation of fluid and drain
the pipe.
Risk of injury due to the nature of the fluid.
▶Respect the prevailing regulations on accident prevention and
safety relating to the use of dangerous fluids.
16
Installation
Type 8221
English

Warning
Risk of injury due to nonconforming installation.
▶The electrical and fluid installation can only be carried out by
qualified and skilled staff with the appropriate tools.
▶Respect the assembly instructions for the fitting and/or the
holder used.
Risk of injury due to unintentional switch on of power supply
or uncontrolled restarting of the installation.
▶Avoid unintentional activation of the installation.
▶Guarantee a set or controlled restarting of the process subse-
quent to any intervention.
7.2. Product with 2 electrodes and a
clamp connection
Install the product in the following ways: onto a pipe (chap. 7.2.1) or
on a vessel (chap. 7.2.2).
7.2.1. Installation onto the pipe
→Choose an appropriate tee-fitting for the installation of the
product.
→Make sure the seals are in good condition.
→Place seals adapted to the process (temperature, fluid type) in the
grooves of the Clamp fitting.
→Mount the tee-fitting in the pipe. Obey the mounting instructions
given with the fitting.
→Make sure the electrodes will always be completely immersed in
the liquid.
→Make sure no air bubbles will disturb the measurements.
→Choose an appropriate clamp collar.
→For the article number 564898 carry out the mounting procedure
on Fig. 3.
→For the article number 564899 or 562261 carry out the mounting
procedure on Fig. 4.
→For the article number 568818 or 569643 carry out the mounting
procedure on Fig. 3 or on Fig. 4.
17
Installation
Type 8221
English

1
(not delivered)
2
3
4
(not delivered)
5
(not delivered)
Flow direction (indicated by the arrows on the product)
→Put the seal 4 onto the hygienic tee-fitting 5.
→Put the product 2 onto the seal 4.
→Align the hole 3 of the product with the flow direction. The
arrows on the product indicate how to place the product.
→Fix the clamp of the product 2 and the clamp of the tee-fitting
with the clamp collar 1.
Fig. 4: Installation of a 8221 with 2 electrodes and with article
number 564899, 562261, 568818 or 569643 onto a pipe
1
(not delivered)
2
3
4
(not delivered)
5
6
(not delivered)
Flow direction (indicated by the arrows on the product)
→Put the seal 4 onto the hygienic tee-fitting 6.
→Put the product 2 onto the seal 4.
→Align the hole 3 of the product with the outlet 5 of the tee-
fitting. The arrows on the product indicate how to place the
product.
→Fix the clamp of the product 2 and the clamp of the tee-fitting
with the clamp collar 1.
Fig. 3: Installation of a 8221 with 2 electrodes and with article
number 564898, 568818 or 569643 onto a pipe
18
Installation
Type 8221
English

7.2.2. Installation on a vessel
→Choose an appropriate fitting for the installation of the product
on the vessel.
→Make sure the seals are in good condition.
→Place seals adapted to the process (temperature, fluid type) in the
grooves of the Clamp fitting.
→Mount the fitting into the vessel. Obey the mounting instructions
given with the fitting.
→Make sure the electrodes will always be completely immersed in
the liquid.
→Make sure no air bubbles will disturb the measurements.
→Choose an appropriate clamp collar.
1
(not delivered)
2
3
4
(not delivered)
→Put the seal 3 onto the fitting 4.
→Put the product 2 onto the seal 3.
→Fix the clamp of the product 2 and the clamp of the fitting 4 with
the clamp collar 1.
Fig. 5: Installation of a 8221 with 2 electrodes on a vessel
19
Installation
Type 8221
English

7.3. Product with a G1¼'' connection
Install the product in the following ways: onto a pipe (chap. 7.3.1) or
on a vessel (chap. 7.3.2).
7.3.1. Installation onto the pipe
→Mount a 1¼'' weld-in socket, with article number 737241 on the
pipe. Obey the instructions given with the weld-in socket.
1
3
2
(not delivered)
→Insert the product 1 in the socket 2.
→Screw the nut 3 on the socket 2.
Fig. 6: Installation of a 8221 with a G1¼'' connection onto a pipe
7.3.2. Installation on a vessel
→Mount a 1¼'' weld-in socket, with article number 737241 on the
vessel. Obey the instructions given with the weld-in socket.
1
3
2
(not delivered)
→Insert the product 1 in the socket 2.
→Screw the nut 3 on the socket 2.
Fig. 7: Installation of a 8221 with a G1¼'' connection on a vessel
20
Installation
Type 8221
English