Burkert ELEMENT neutrino 8202 User manual

Operating Instructions (from serial number 3000)
Bedienungsanleitung (ab Serien-Nummer 3000)
Manuel utilisateur (à partir du numéro de série 3000)
Type 8202 ELEMENT neutrino
pH or redox meter
pH- oder Redoxpotential-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, 2010-2020
Operating Instructions 2009/04_EU-ML 00561658 / Original FR

3
1. THE OPERATING INSTRUCTIONS .......................................................5
1.1. Symbols used ......................................................................................5
1.2. Definition of the term device ........................................................5
1.3. Validity of the Operating Instructions .....................................6
2. INTENDED USE ..............................................................................................6
3. BASIC SAFETY INFORMATION ..............................................................6
4. GENERAL INFORMATION ..........................................................................8
4.1. Manufacturer's address and international contacts ........8
4.2. Warranty conditions ...........................................................................8
4.3. Information on the Internet ..........................................................8
5. DESCRIPTION ...................................................................................................8
5.1. Construction ..........................................................................................8
5.2. Type label ................................................................................................9
6. TECHNICAL DATA ........................................................................................ 10
6.1. Conditions of use .............................................................................10
6.2. Conformity to standards and directives .............................10
6.2.1. Conformity to the pressure equipment directive ....10
6.2.2. UL certification ..............................................................11
6.3. Materials ...............................................................................................12
6.4. Dimensions ........................................................................................ 13
6.5. Fluid data ............................................................................................ 13
6.6. Electrical data ...................................................................................15
6.7. pH probe, redox probe ................................................................ 15
7. ASSEMBLY ..................................................................................................... 16
7.1. Safety instructions .........................................................................16
7.2. Unscrewing the cover on the connection box ................16
7.3. Fitting the cover to the connection box ..............................17
7.4. Fitting the probe into the holder (without fluid) .............18
8. INSTALLATION ..............................................................................................18
8.1. Safety instructions .........................................................................18
8.2. Installation on the pipe ................................................................ 19
8.3. Fitting the electronic module to the holder ......................21
8.4. Electrical wiring ...............................................................................22
8.4.1. Electrical connections .................................................22
8.4.2. Wiring a device variant with cable gland ................23
8.4.3. Assembling and wiring the female connec-
tor, article number 917116 ........................................24
8.4.4. Wiring a device variant with M12 male con-
nector ..............................................................................25
Type 8202 ELEMENT neutrino
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4
Type 8202 ELEMENT neutrino
9. ADJUSTMENT AND START-UP ............................................................26
9.1. Safety instructions .........................................................................26
9.2. Description of the connection box ........................................27
9.3. Selecting the measurement mode: pH or redox ........... 27
9.4. Choosing the pH, redox potential or temperature
range associated with the 4...20 mA output ..................... 28
9.5. Calibrating the pH or redox probes ...................................... 29
9.5.1. 1-point calibration: zero adjustment .........................30
9.5.2. Calibration thresholds of the probe ...........................31
9.5.3. 2-point calibration (pH only): zero and slope
adjustments ....................................................................32
10. MAINTENANCE AND TROUBLESHOOTING .............................. 34
10.1. Safety instructions .........................................................................34
10.2. Cleaning the device ........................................................................34
10.3. Replacing the probe ...................................................................... 35
10.4. Replacing the seal in the probe holder .............................. 36
10.5. Replacing the cover seal on the connection box .......... 37
10.6. In case of problems, excluding calibration .......................39
11. SPARE PARTS AND ACCESSORIES .............................................40
12. PACKAGING, TRANSPORT .................................................................41
13. STORAGE .....................................................................................................41
14. DISPOSAL OF THE DEVICE ...............................................................41
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5
the Operating Instructions
Type 8202 ELEMENT neutrino
1. THE OPERATING
INSTRUCTIONS
The Operating Instructions describe the entire life cycle of the device.
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.
▶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.
▶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 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 work step that you must carry out.
1.2. Definition of the term device
The term device that is used within these Operating Instructions refers
to the pH-meter or redox-meter Type 8202 ELEMENT neutrino.
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6
Basic safety information
Type 8202 ELEMENT neutrino
1.3. Validity of the Operating
Instructions
The Operating Instructions are valid for the Type 8202 ELEMENT
neutrino devices with a series number equal or higher than 3000.
2. INTENDED USE
Use of the 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 one the fol-
lowing physical quantities, depending on the fitted probe:
- the pH in clean liquids or liquids containing solids, sulphides
or proteins,
- the oxidation reduction potential in clean liquids or liquids
containing solids, sulphides or proteins which may present
low conductivity.
▶Use the device in compliance with the characteristics and start-up
and use conditions specified in the contractual documents and in
the Operating Instructions.
▶Store, transport, install and operate the device properly.
▶Only operate a device in perfect working order.
▶Only use the device 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 device.
The operating company is responsible for the respect of the local
safety regulations including for the staff safety.
Risk of injury due to electrical voltage.
▶If the device is installed either in a wet environment or outdoors,
all the electrical voltages must be of max. 35 V DC.
▶
Before carrying out work on the system or the device, disconnect
the electrical power for all the conductors and isolate it.
▶All equipment connected to the device must be double insu-
lated with respect to the mains according to the standard UL/
EN 61010-1.
▶Observe all applicable accident protection and safety regula-
tions for electrical equipment.
Risk of injury due to pressure in the installation.
▶Before any intervention in the installation, stop the circulation of
fluid, cut off the pressure and drain the pipe.
▶Before any intervention in the installation, make sure there is no
pressure in the pipe.
▶Observe the dependency between the fluid temperature and the
fluid pressure.
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Basic safety information
Type 8202 ELEMENT neutrino
Risk of burns 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.
▶Before opening the pipe, make sure the pipe is completely
empty.
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.
Various dangerous situations
To avoid injury, observe the following instructions:
▶Do not use the device in explosive atmospheres.
▶Do not use the device in an environment that is incompatible
with the device materials.
▶Do not use fluid that is incompatible with the device materials.
Find the compatibility chart on our homepage: country.burkert.
com
▶Do not subject the device to mechanical stress.
▶Do not make any modifications to the device.
▶Prevent any unintentional power supply switch-on.
Various dangerous situations
To avoid injury take care:
▶Only qualified and skilled staff may carry out the installation and
maintenance work.
▶Ensure a defined or controlled restarting of the process after a
power supply interruption.
▶
Observe the general technical rules.
notiCe
Elements and components that are sensitive to electrostatic
discharges
The device contains electronic components that are sensitive to
electrostatic discharges. The components may be damaged if they
are touched by an electrostatically charged person or object. In the
worst case scenario, the components 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 that are described in the
EN 61340-5-1 norm.
▶Do not touch any of the live electrical components.
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General information
Type 8202 ELEMENT neutrino
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
The addresses of our international sales offices are available on the
internet at: country.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 the
Operating Instructions.
4.3. Information on the Internet
You can find the Operating Instructions and technical data sheets for
the Type 8202 ELEMENT neutrino at: country.burkert.com
5. DESCRIPTION
5.1. Construction
The device comprises:
• A module for converting physical parameters, comprising:
- A pH probe or redox probe that converts the pH or the redox
potential of the fluid into differences in potential (PD in mV).
The differences in potential are then transmitted to the PD
acquisition/conversion module;
- A Pt1000 temperature probe integrated in the probe holder which
converts the temperature of the fluid into resistance (in W).
• A PD acquisition / conversion module:
- PD acquisition measured in mV;
- Conversion of the measured PD into pH units with temperature
compensation (for a device with pH probe only)
- Acquisition of the resistance in W and conversion into °C.
The device operates on a 2-wire system and requires an operating
voltage of 12...36 V DC. Depending on the device variant, electrical
connection is made over one of the following means:
- a 5-pin M12 male connector
- a 5-pin terminal block over a cable gland.
The device can be fitted with a standard probe 120 mm long, meas-
uring the pH or the oxidation reduction potential. It is screwed into a
holder with the built-in Pt1000 temperature probe.
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9
Description
Type 8202 ELEMENT neutrino
• The pH probe is a glass membrane with variable selectivity
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 dif-
ference 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).
• When a Redox probe is immersed in a solution, an exchange of
electrons occurs between the oxidised form and the reduced form
of an electrolyte. The resulting voltage is the oxidation reduction
potential.
5.2. Type label
Supply: 12-36V ... ,Max1W Output: 1x 4-20mA
Cell:pH Plastrode 120mm 6bar 40°C
Fluid:16Bar 0 ... +50°C limit by cell IP65-67
S/N 3183
00xxxxxx
4
5
6
7
810
8202 pH/ORP-Transmitter neutrino
Made in France
15
16
V+ NC
0V
1 2
34 5
NC
W49MU
1 2 3
9
11
12
13
14
1. Operating voltage
2. Power consumption
3. Output type
4. Measuring range
5. IP-Code
6. Fluid temperature
7. Manufacturing code
8. Conformity marking
9. Certification
10. Warning: Before using the device, take into account the tech-
nical specifications described in these Operating Instructions
11. Article number
12. Serial number
13. Nominal pressure of the fluid
14. Constant of the measuring cell
15. Type of the device and measured quantity
16. Pin assignment of the electrical connection
Fig. 1: Type label (example)
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Technical data
Type 8202 ELEMENT neutrino
6. TECHNICAL DATA
6.1. Conditions of use
Ambient
temperature
–10...+60 °C, without pH probe or redox
probe
Air humidity < 85%, without condensation
Operating condition Continuous operation
Mobility of the
device
Fixed device
Use Indoor and outdoor.
▶Protect the device against electromagnetic
interference, ultraviolet rays and, when
installed outdoors, the effects of the climatic
conditions.
IP-Code
NEMA protection
type
1) not evaluated
by UL
• IEC / EN 60529: IP67 1) and IP65 1)
• NEMA 250: 4X and 6P
Mating female connector must be wired and
plugged, or cable gland must be wired and
tightened.
Cover of the connecting box must be fully
tightened and locked.
Degree of pollution Degree 2 according to UL/EN 61010-1
Installation category Category I according to UL/EN 61010-1
Maximum height
above sea level
2000 m
6.2. 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 or the EU
declaration of conformity (if applicable).
6.2.1. Conformity to the pressure
equipment directive
▶Make sure that the device materials are compatible with the fluid.
▶Make sure that the pipe DN is adapted for the device.
▶Observe the nominal pressure (PN) of the fluid for the device.
The nominal pressure (PN) of the fluid is given by the device
manufacturer.
The device conforms to Article 4, Paragraph 1 of the Pressure
Equipment Directive 2014/68/EU under the following conditions:
• Device used on a pipe (PS = maximum admissible pressure in
bar; DN = nominal dimension of the pipe, no unit)
Type of fluid Conditions
Fluid group 1, Article 4, Para-
graph 1.c.i DN ≤ 25
Fluid group 2, Article 4, Para-
graph 1.c.i
DN ≤ 32
or PSxDN ≤ 1000 bar
Fluid group 1, Article 4, Para-
graph 1.c.ii
DN ≤ 25
or PSxDN ≤ 2000 bar
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11
Technical data
Type 8202 ELEMENT neutrino
Type of fluid Conditions
Fluid group 2, Article 4, Para-
graph 1.c.ii
DN ≤ 200
or PS ≤ 10 bar
or PSxDN ≤ 5000 bar
• Device used on a vessel (PS = maximum admissible pressure in
bar; V = vessel volume in L)
Type of fluid Conditions
Fluid group 1, Article 4, Para-
graph 1.a.i
V >1 L and PSxV ≤ 25 bar.L
OR
PS ≤ 200 bar
Fluid group 2, Article 4, Para-
graph 1.a.i
V >1 L and PSxV ≤ 50 bar.L
OR
PS ≤ 1000 bar
Fluid group 1, Article 4, Para-
graph 1.a.ii
V >1 L and PSxV ≤ 200 bar.L
OR
PS ≤ 500 bar
Fluid group 2, Article 4, Para-
graph 1.a.ii
PS >10 bar and
PSxV ≤ 10000 bar.L
OR
PS ≤ 1000 bar
6.2.2. UL certification
Devices with variable key PU01 or PU02 are UL-certified devices
and comply also with the following standards:
• UL 61010-1
• CAN/CSA-C22.2 n°61010-1
Identification on the device Certification Variable key
UL-recognized PU01
Measuring
Equipment
EXXXXXX
®
UL-listed PU02
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Technical data
Type 8202 ELEMENT neutrino
6.3. Materials
Component Material
Box / seals stainless steel, PPS / EPDM
Cover / seal PPS / EPDM
M12 male connector /
seal
PA66 / EPDM
Cable gland / seal PA66 / EPDM
Nut PVC (or PVDF on request)
Probe holder / seal PVDF, stainless steel 1.4571 (316Ti) /
EPDM
pH probe or redox
probe
Refer to the related Operating Instructions
PPS
EPDM
PPS
PVC
or PVDF on
request
EPDM
PVDF
Stainless steel
316Ti
PA66/EPDM
PVDF
pH or redox
probe
Stainless steel
316L
S7/S8
Fig. 2: Materials used in the device
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13
Technical data
Type 8202 ELEMENT neutrino
• Device variant with a PVDF
nut
• –20...130 °C
The fluid temperature may be
restricted by the probe used and
the fitting used. Refer to the related
Operating Instructions.
The fluid temperature may be
restricted by the fluid pressure
Refer to Fig. 3 and Fig. 5.
pH measurement
• Measurement range
• Accuracy
• 0...14 pH
• ±0.05 pH
Redox potential
measurement
• Measurement range
• Accuracy
• –2000...+2000 mV
• ±3 mV
Temperature probe Pt1000 integrated in the probe
holder
Temperature measurement
• Measurement range
• Accuracy
• –40...+130 °C
• ±1 °C
Temperature compensation • Automatic (integrated Pt1000)
• Reference temperature = 25 °C
6.4. Dimensions
→Refer to the data sheet of the device, available at:
country.burkert.com
6.5. Fluid data
Fluid pressure
2) not evaluated by UL
PN16 2)
The fluid pressure may be restricted
by the probe used and the fitting
used. Refer to the related Operating
Instructions.
The fluid pressure may be restricted
by the material of the nut and the
fluid temperature. Refer to Fig. 3,
Fig. 4 and Fig. 5.
Fluid temperature
• Device variant with a PVC
nut
• 0...+50 °C
The fluid temperature may be
restricted by the probe used and
the fitting used. Refer to the related
Operating Instructions.
The fluid temperature may be
restricted by the fluid pressure
Refer to Fig. 3 and Fig. 4.
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Technical data
Type 8202 ELEMENT neutrino
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)
PVDF
PVC
PVDF
+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)
These measurements were taken at an ambient temperature of 60 °C.
Fig. 3: Device with a PVC nut or a PVDF nut, without probe:
Dependency between the fluid temperature and the fluid
pressure
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
Fig. 4: Device variant with a PVC nut, without probe, with an S022 in
metal, PVC or PP: Dependency between the fluid temperature
and the fluid pressure
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
Fig. 5: Device variant with a PVDF nut, without probe, with an
S022 in metal, PVC or PP: Dependency between the fluid
temperature and the fluid pressure
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Technical data
Type 8202 ELEMENT neutrino
6.6. Electrical data
Operating voltage • 12...36 V DC
• connection to main supply: per-
manent through external safety
extra-low voltage (SELV) and
through limited power source
(LPS)
• filtered and regulated
Power consumption ≤ 25 mA (12...36 V DC)
Power source (not
supplied)
• limited power source according to
UL/EN 60950-1 standard
• or limited energy circuit according
to UL/EN 61010-1, Paragraph 9.4
Protection against polarity
reversal
yes
Protection against spike
voltages
yes
Current output
• Accuracy
• Response time
(10 % - 90 %)
• Loop impedance max.
4...20 mA
• ±1 % (0.16 mA)
• 5 s
• 1100 W at 36 V DC, 610 W at
24 V DC, 100 W at 12 V DC
6.7. pH probe, redox probe
The specifications of Bürkert probes can be found in the
related Operating Instructions.
The device must be used with a pH or redox probe that satisfies the
following specifications:
• combined probe;
• length: 12 mm;
• with PG 13.5 head;
• with an S7/S8 connector;
• without temperature probe.
H
H
120 mm
12 mm max.
probe head
seal
PG 13.5
34 mm ≤ H ≤ 46 mm
S7/S8
Fig. 6: Specifications of the pH probe or redox probe
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Assembly
Type 8202 ELEMENT neutrino
7. ASSEMBLY
7.1. Safety instructions
Danger
Risk of injury due to electrical voltage.
▶If the device is installed either in a wet environment or outdoors,
all the electrical voltages must be of max. 35 V DC.
▶Before carrying out work on the system or the device, disconnect
the electrical power for all the conductors and isolate it.
▶All equipment connected to the device must be double insu-
lated with respect to the mains according to the standard UL/
EN 61010-1.
▶Observe all applicable accident protection and safety guidelines
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 set or controlled restarting of the process subse-
quent to any intervention on the device.
7.2. Unscrewing the cover on the
connection box
notiCe
The tightness of the device is not guaranteed when the cover
is removed.
▶Take any precautions necessary to prevent the projection of
liquid inside the box.
The connection box is fitted
with a locking system.
→Using a screwdriver with
a suitable head, unlock
the connection box by
turning the latch to the
unlock position.
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Assembly
Type 8202 ELEMENT neutrino
slots
polarising slots
→Position the polar-
ising slots on the
cover in the axis
of the slots on the
box: 3 positions are
possible.
→Tighten the cover on
the connection box.
→Using a screwdriver
with a suitable head,
turn the latch to the
lock position to lock
the cover.
Fig. 8: Fitting the cover on the connection box
→Unscrew the cover on
the connection box by
hand.
Fig. 7: Unscrewing the cover on the connection box
7.3. Fitting the cover to the
connection box
B
→Check that seal
"B" on the cover is
in good condition.
Replace it if nec-
essary (see chpt. 11
and chpt. 10.5).
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Installation
Type 8202 ELEMENT neutrino
7.4. Fitting the probe into the holder
(without fluid)
probe head
shim
seal ring
H
→Check that the probe
dimension H is between
34 and 46 mm. If necessary,
use a shim to adjust the
height.
→Removing the protective
plug from the probe.
A
→Check that the sealing ring
A is in good condition and
that it is correctly positioned
in the groove on the holder.
→Inserting the probe into the
holder from the top.
→Tighten the probe head
using a suitable wrench to a
torque of 2 Nm.
Fig. 9: Fitting the probe into the holder (without fluid)
8. INSTALLATION
8.1. Safety instructions
Danger
Risk of injury due to pressure in the installation
▶Stop the circulation of fluid and depressurize the pipes before
loosening the process connections.
Risk of injury due to electrical voltage.
▶If the device is installed either in a wet environment or outdoors,
all the electrical voltages must be of max. 35 V DC.
▶Before carrying out work on the system or the device, disconnect
the electrical power for all the conductors and isolate it.
▶All equipment connected to the device must be double insu-
lated with respect to the mains according to the standard UL/
EN 61010-1.
▶Observe all applicable accident protection and safety guidelines
for electrical equipment.
Risk of injury due to the nature of the fluid.
▶Respect the regulations on accident prevention and safety relat-
ing to the use of aggressive fluids.
Risk of injury due to high fluid temperatures.
▶Use safety gloves to handle the device.
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19
Installation
Type 8202 ELEMENT neutrino
notiCe
The device may be irremediably damaged if it is installed in
the pipe without the probe.
▶Always install the device in the pipe fitted with a probe.
If a pH/redox probe (with PG 13.5 head, 120 mm long
and without temperature probe) from a supplier other than
Bürkert is used, follow the relevant instructions on instal-
lation in the pipe.
If the pH or oxidation reduction potential is measured in
liquids containing solids that may leave deposits in the
bottom of the pipe, use installation position 1 (see Fig. 10).
The probe must always be immersed in the fluid to prevent
it drying out.
The device is inserted into a S022 fitting installed into the pipe.
→Choose an appropriate position in the pipe to install the fitting
(see Fig. 10).
Warning
Risk of injury due to non-conforming installation.
▶The electrical and fluid installation can only be carried out by
qualified and skilled staff with the appropriate tools.
▶Install appropriate safety devices (correctly rated fuse and/or
circuit-breaker).
▶Respect the assembly instructions for the fitting used.
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 set or controlled restarting of the process subse-
quent to any intervention on the device.
8.2. Installation on the pipe
Warning
Risk of injury if the dependency between the fluid pressure
and the fluid temperature is not respected.
▶Take account of the dependency curves between the fluid tem-
perature and fluid pressure. Refer to chpt. 6.5.
▶Comply with the Pressure Equipment Directive 2014/68/EU.
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20
Installation
Type 8202 ELEMENT neutrino
12
Fig. 10: Mounting positions of the fitting/device unit in the pipe.
→Install the fitting in the pipe at an angle of ±75° max. to the
vertical (see Fig. 11) in accordance with the instructions in the
Operating Instructions for the fitting used.
75° 75°
Fig. 11: Angle to the vertical
→Fitting the probe into the holder (see chap. 7.4).
→Installing the holder, with its probe, in the fitting (see Fig. 12).
B
→Check the presence and the condition
of seal B on the fitting. Replace the seal
if necessary.
→Insert the holder fitted with the probe
carefully into the fitting.
→Tighten the nut G 1 1/2" on the fitting
by hand.
→Pressurise the pipe to check the
tightness of the assembly.
Fig. 12: Installation of the probe holder in a fitting
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