Endress+Hauser UniFit CPA 441 User manual

BA 026C/07/en/06.99
No. 51500738 UniFit H
CPA 441
Process Assembly for
pH/Redox Measurement
Operating Instructions
Hauser+Endress
Nothing beats know-how
Q
uality made by
Endress+Hauser
ISO 9001

Table of contents
1 General information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
1.1 Symbols used ............................................................. 2
1.2 Storage and transport ....................................................... 2
1.3 Unpacking ................................................................ 2
1.4 Packaging and disposal ..................................................... 2
1.5 Product structure ........................................................... 3
2 Safety............................................................... 4
2.1 Intended use .............................................................. 4
2.2 General safety notes ........................................................ 4
2.3 Installation, start-up, operation ................................................ 4
2.4 Safety features ............................................................. 5
2.5 Notes for installation in pressurised systems...................................... 5
3 Installation........................................................... 6
3.1 Measuring system .......................................................... 6
3.2 Dimensions ............................................................... 6
3.3 Mounting positions and mounting versions ....................................... 7
3.4 Installation or replacement of electrode and mounting of measuring cable .............. 8
3.5 Filling with electrolyte....................................................... 10
4 Maintenance........................................................ 12
4.1 Assembly cleaning......................................................... 12
4.2 Electrode cleaning ......................................................... 12
4.3 Calibration ............................................................... 13
4.4 O-ring replacement ........................................................ 14
5 Accessories and spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
6 Technicaldata....................................................... 16
7 Index............................................................... 17
PA441E00.CHP
UniFit H CPA 441 Table of contents
Endress+Hauser 1

1 General information
1.1 Symbols used
Warning:
This symbol alerts to hazards.
Failure to observe these warnings
may result in injury or damage to
equipment.
Note:
This symbol indicates important
items of information. Ignoring this
information may result in malfunction.
1.2 Storage and transport
The packaging material used to store or
transport the assembly must provide shock
protection. Optimal protection is provided by
the original packaging materials.
The ambient conditions also have to meet the
requirements (see Technical data).
1.3 Unpacking
Verify that the packaging and contents
are undamaged! Inform the post office or
freight carrier of any damage. Damaged
merchandise must be retained until the
matter has been settled.
Check that the delivery is complete and agrees
with the shipping documents and your order
(refer to nameplate for type and version).
The delivery comprises:
•Assembly UniFit H CPA 441
•Size 17 socket wrench
•Built-in adapter, as per your order already
mounted or separate
•Operating instructions BA 026C/07/en.
Keep the original packaging materials for
future storage or shipping of the assembly.
If you have any questions, consult your
supplier or the Endress+Hauser sales
agency in your area (see back cover of
these operating instructions for addresses).
1.4 Packaging and disposal
Package the assembly properly for reuse at
a later point in time. Optimal protection is
provided by the original packaging materials.
Observe local regulations for disposal.
General information UniFit H CPA 441
2Endress+Hauser

1.5 Product structure
O-ring / body / protection guard
11 EPDM / PVC / screw-in (only version A)
12 EPDM / PVDF / screw-in (only version A)
13 EPDM / 1.4571 (SS 316Ti) / screw-in
14 EPDM / 1.4571 (SS 316Ti) / plug-in
23 Viton / 1.4571 (SS 316Ti) / screw-in
24 Viton / 1.4571 (SS 316Ti) / plug-in
Mounting version
A Without adapter
F Adapter 1.4571 (SS 316Ti) / DN 25, G 1¼ / straight
G Adapter 1.4571 (SS 316Ti) / DN 25, G 1¼ / oblique
I Adapter 1.4571 (SS 316Ti) / dairy fitting DN 40
K Adapter 1.4571 (SS 316Ti) / Tri-Clamp 2"
L Adapter 1.4571 (SS 316Ti) / Varivent for DN 40 ... 125 (only version 14)
CPA 441- complete order code
pH/redox process assembly UniFit H CPA 441
PA441E01.CHP
UniFit H CPA 441 General information
Endress+Hauser 3

2 Safety
2.1 Intended use
The pH/redox process assembly UniFit H
CPA 441 is intended for applications where
the components in contact with medium must
be steam-sterilised. Typical areas of application
are fermenters, food industry, highly pasty
media and media with very low conductivity.
The assembly consists of a built-in part and
a vessel filled with liquid electrolyte. The cap
of the electrolyte vessel contains the thread
which will hold the electrode, a manometer
and a screw coupling for the compressed-air
connection. This quick-release coupling also
serves as opening for refilling the electrolyte.
It is not necessary to remove the assembly or
the electrode to refill. The pressure may be
applied by compressed air or a manual pump.
It is the operator’s responsibility to assure that
the following safety regulations are observed:
•Regulations for explosion protection
•Regulations for installation
•Operating conditions for the device and its
materials
•Local standards and regulations.
2.2 General safety notes
The assembly CPA 441 has been designed
for safe operation according to the state of the
art in engineering and according to current
regulations and European standards (see
Technical data).
However, if used improperly or other than for
the intended purpose, it may be dangerous,
e.g. due to incorrect installation or incorrect
operating conditions.
Warning:
•Operating this assembly in any
way other than described in these
instructions may compromise
the safety and function of the
measuring system.
•The notes and warnings in these
operating instructions must be
strictly adhered to.
2.3 Installation, start-up, operation
Warning:
•This device may only be installed,
connected electrically,
commissioned, operated and
serviced by properly trained
personnel authorised by the
system operator.
•The personnel must be familiar
with these operating instructions
and must adhere to the
instructions contained therein.
•When this assembly is used in an
explosive atmosphere, adherence
to the applicable regulations is
mandatory.
•Check that all connections have
been properly made before
powering up the system.
•Damaged assemblies that may be
dangerous must not be operated
and should be clearly identified as
being defective.
•Any troubleshooting of the
measuring system must be
performed exclusively by
authorised, trained personnel.
•If faults cannot be remedied, the
assembly must be removed from
service and secured to prevent
accidental start-up.
•Repairs not described in these
operating instructions may only
be performed directly at the
manufacturer’s works or by
the Endress+Hauser service
organisation.
Safety UniFit H CPA 441
4Endress+Hauser

2.4 Safety features
Safety devices
The assembly is protected against external
influences and damage by media-resistant
materials.
2.5 Notes for installation in pressurised systems
Warning:
•The maximum operating pressure
of the assembly must not be
exceeded.
•The system must be depressurised
before installation or removal of
the assembly.
•Couplings, cocks and lines must
be checked for leakage and
damage at regular intervals.
PA441E02.CHP
UniFit H CPA 441 Safety
Endress+Hauser 5

3 Installation
3.1 Measuring system
A complete measuring system comprises:
•the UniFit H CPA 441 assembly
•a combined pH/redox electrode,
length 225 mm
•a measuring cable CPK 1 or CPK 7
(terminated)
•a pH/redox measuring instrument
and optionally
•a junction box VBA and a measuring cable
(not terminated) for measuring cable
extension.
3.2 Dimensions
PA441SYS.CDR
Protection sleeve
Junction box VBA
UniFit H CPA 441 assembly
Measuring cable
Skintop gland Pg 16
PM connection
Electrode holder
Electrode
pH measuring instrument
MyPro CPM 431
Protection guard
Fig. 3.1 Example of a complete
measuring system
Rd 65 ×1/6“
Á
AD-MI.CDR
2
3
4
20
91
66
1
DN 40
∅25
Required mounting clearance approx. 550
approx. 405
66
20
91
50
∅80
1
2
4
5
6
7
8
9
10
11
∅25
Manometer
∅42
3
À
PA441-03.CDR
Fig. 3.2 À Mounting version:
Adapter DN 25
1 Splash protection cap
with cable entry
2 Protection sleeve
3 Connection for
compressed-air tube
ID 6 / OD 8
or ∅5 mm connection
forairpump,max.8bar
4 KCl refilling
5 Filling mark
6 Pressure vessel,
transparent
7 PM connection
8CouplingnutG1¼
Material:
1.4571 (SS 316Ti)
9 Built-in adapter,
straight or oblique
10 Electrode,
shaft length 225 mm
11 Protection guard
Á
Mounting version:
Dairy fitting DN 40
1 Taper fitting
2 Coupling nut F 40,
DIN 11851
3 Electrode
4 Protection guard
Â
Mounting version:
Varivent adapter
1 Clamp fitting
2 Electrode
Â
AD-VV.CDR
1
2
20
30
48.2
3
∅75
∅24
∅71
∅84
Installation UniFit H CPA 441
6Endress+Hauser

3.3 Mounting positions and mounting versions
The UniFit H CPA 441 assembly is installed
with the selected adapter.
Note:
•The permissible range of mounting
positions comprises inclinations of
the central axis of the assembly
that do not fall below 15°from the
horizontal (see Fig. 3.3). Ensure
that the electrode contacts the
medium to be measured. With
inclined mounting, the change in
the usable electrolyte volume must
be considered (see chapter 3.5).
•The assembly must always be
installed in such a way that the
manometer and the compressed-air
connection are located at the
highest point and do not contact
the electrolyte. Select an installation
site that will allow easy removal of
the quick-release coupling and will
facilitate pressure readings. Ensure
adequate mounting clearances for
removal, installation, cleaning and
maintenance.
Built-in adapter
The UniFit H CPA 441 assembly is introduced
into the adapter –which may be welded on
or glued on –and hand-tightened with the
coupling nut. During installation, ensure that
the O-ring is properly seated and clean.
The sealing surface of the built-in adapter
must be protected against mechanical
damage. To permit use in food applications,
an Endress+Hauser built-in adapter should
be used (see Fig. 3.4 and Fig. 3.5).
However, adapters from other manufacturers
are basically usable as well. When installing
the assembly in built-in adapters of less than
50 mm in length, the O-ring must be inserted
in the second O-ring seat located further up.
You should therefore avoid using pointed or
sharp tools to change the O-rings.
Permissible
range
15°
PA441-EB.CDR
Impermissible
range
Fig. 3.3 Permissible mounting
positions for CPA 441
G 1¼
AD-25GV.CDR
∅42
50
Fig. 3.4 Built-in adapter, straight
AD-25SP.CDR
G 1¼
49
∅42
59
15°
Fig. 3.5 Built-in adapter, oblique
PA441E03.CHP
UniFit H CPA 441 Installation
Endress+Hauser 7

Varivent adapter and dairy fitting
The versions of the UniFit H CPA 441 with
Varivent adapter or dairy pipe fitting meet
the requirements of the corresponding DIN
standards, which must also be fulfilled by
the counterparts. Observe the relevant
regulations for installation. As a general rule,
always ensure that the sealing elements are
properly seated, clean and intact.
Protection guard
•The UniFit H CPA 441 assembly can be
equipped with a protection guard (see
Fig. 3.2) if desired.
•All versions are screwed in.
•Stainless steel versions are optionally
plugged in.
•With the protection guard screwed in,
even the stainless steel versions are no
longer suitable for food applications.
3.4 Installation or replacement of electrode
and mounting of measuring cable
pH/redox electrodes with a Pg 13.5 threaded
plug-in head, a shaft length of 225 mm and a
shaft diameter of 12 mm can be fitted into the
assembly.
The sealing of the electrode is provided
•at the threaded plug-in head by an O-ring
and a clamping ring
•at the lower shaft end via the O-ring in the
hole of the assembly.
Warning:
•Always depressurise the assembly
before removing the electrode
(see chapter 3.5.2).
•Electrolyte present in the electrolyte
vessel must be emptied out first,
or it drains from the assembly
through the built-in part.
•With installed assembly, by all
means note the medium pressure!
Note:
•Make the electrode slidable before
screwing in. Wetting with water is
sufficient.
•During electrode installation,
ensure that both O-rings are
properly seated and clean.
•The rubber hoses above the
electrode holes must be removed
prior to installation. No air bubbles
must be visible in the lower part of
the electrode shaft. Shake the
electrode several times if required.
•Should the assembly remain dry
for an extended period after
electrode installation, then the
electrode tip must be kept moist,
e.g. in KCl solution (3 mol/l).
Installation UniFit H CPA 441
8Endress+Hauser

➀Pull off the splash protection cap
and unscrew the protection sleeve. ➁Screw the electrode into the electrode guide hand-tight and
then tighten it by a quarter turn
with a size 17 socket wrench.
➂Thread the measuring cable with
the electrode connector through
the protection sleeve.
➃Screw the electrode connector into
the threaded plug-in head on the
electrode.
➄Screw the protection sleeve back on. ➅Bend the measuring cable and
plug in the splash protection cap.
MOUNT01.CDR MOUNT02.CDR MOUNT03.CDR
MOUNT04.CDR MOUNT05.CDR MOUNT06.CDR
Fig. 3.6 Electrode installation and
mounting of measuring
cable
PA441E03.CHP
UniFit H CPA 441 Installation
Endress+Hauser 9

3.5 Filling with electrolyte
Filling the electrolyte vessel is only possible
with installed electrode. The coupling of the
compressed-air connection serves as the
filling hole.
Note:
•If the electrolyte vessel is
pressurised, then the pressure
will escape after the first half turn
of the refill connection.
•Ensure by all means that no
electrolyte penetrates the electrode
head or the cable plug.
•The compressed-air and
manometer connections must
not be flooded with electrolyte
(see Fig. 3.8).
➀Depressurise the assembly acc.
to chapter 3.5.2. Loosen the
blue coupling nut. Pull off the
compressed-air connection.
➁Unscrew the refill connection. ➂Fill in the liquid electrolyte.
Choose the filling level acc. to the
mounting position of the assembly.
EL_LEVEL.CDR
Electrolyte level must stay below
compressed-air and manometer
connections!
Fig. 3.8 Electrolyte filling level
FILL01.CDR
Fig. 3.7 Filling with electrolyte FILL02.CDR FILL03.CDR
Installation UniFit H CPA 441
10 Endress+Hauser

3.5.1 Pressurisation
There must always be a differential pressure
between the electrolyte vessel and the
medium to be measured in order to prevent a
penetration of the medium into the electrode.
There are two ways to pressurise the
electrolyte:
•via an existing compressed-air ductwork
system with screw coupling
•via a hand pump with hand pump adapter.
Both the sealing socket integrated into the
assembly cover and the quick-release
coupling are self-locking, i.e. the connections
can be interrupted without pressure loss. If
compressed air is not continuously supplied,
then an appropriate air cushion must be
present above the electrolyte to maintain the
pressure as the quantity of electrolyte
decreases.
3.5.2 Depressurisation
Replacement of the electrode, refilling
electrolyte and opening the assembly
require by all means to depressurise the
assembly before:
Differential pressure electrolyte / medium
The quantity of electrolyte flowing out of the
electrode depends on the differential
pressure between electrolyte vessel and
medium. To prevent a penetration of medium
into the electrode, the electrolyte pressure
must always exceed the medium pressure.
Fig. 3.10 shows the electrolyte flow for various
diaphragm types.
➀Release the compressed-air
coupling (if still connected). ➁Unscrew the refill connection by approx. half a turn. Any remaining
compressed air escapes with an
audible hiss.
➂Do not open the assembly before
the manometer reads 0 bar!
PA441-01.CDR
Ceramics Triple
ceramics
Fibre
diaphragm
0
10
20
30
40
50
60
Electrolyte flow [µl/h] at ∆0.1 bar
Fig. 3.10 Dependance of the
electrolyte flow on the
diaphragm type
DEPRESS1.CDR DEPRESS2.CDR
010
64
bar
28
DEPRESS3.CDR Fig. 3.9 Depressurisation
PA441E03.CHP
UniFit H CPA 441 Installation
Endress+Hauser 11

4 Maintenance
4.1 Assembly cleaning
The assembly must be removed at intervals
dependent on the medium. The sealing
O-rings must then be visually inspected and
replaced if necessary. Complete cleaning of
the side in contact with medium may be
required.
4.2 Electrode cleaning
Soiling may impair the function of the electrode
to such an extent that it ceases to work. For
example, coatings on the pH sensitive glass
membrane may cause poor response, low
sensitivity/slope and unstable measured
values. Therefore all parts of the electrode in
contact with medium must be cleaned regularly.
The frequency and intensity of cleaning
depend on the medium to be measured.
Note:
Do not use abrasive cleaning agents!
These may cause irreparable damage
to the glass membrane.
•Remove light soiling and coatings by
rinsing with a suitable cleaning solution
(see table below).
•Remove adhering coatings by a soft brush
and a suitable cleaning solution. Soak in
cleaning solution beforehand if necessary.
•Rinse the electrode with distilled water after
cleaning! Cleaning agent residue not removed
may impair the measurement.
•By all means recalibrate the measuring
system after cleaning!
Soiling, coating Cleaning agent
Grease and oil (Alkaline) agents containing surfactants or
water-soluble organic solvents (e.g. alcohol)
Limestone deposits, cyanide deposits, heavy
biological and metal hydroxide coatings
Hydrochloric acid (10%),
diluted to approx. 3% in the injector
Sulfide deposits Mixture of hydrochloric acid (3%) and
thiourea (saturated)
Protein coatings Mixture of hydrochloric acid (3%) and
pepsin (saturated)
Fibres, suspended substances Pressure water, possibly containing wetting
agents
Light biological coatings Pressure water
Maintenance UniFit H CPA 441
12 Endress+Hauser

4.3 Calibration
The pH/redox measuring system must be
calibrated regularly and carefully to maintain
accuracy.
The periods between the calibrations depend
on the operating conditions and the desired
accuracy. They must be determined individually
for each application. More frequent calibration,
e.g. once a week, is recommended at the
beginning to study the performance in service.
Clean the electrode before each calibration!
Warning:
In case of a symmetrical high-
impedance electrode connection,
establish by all means an electrical
connection between the buffer
solution and the PM connection.
Note:
•Do not leave the electrode in
distilled water.
•Do not allow the electrode to stand
dry. Keep the electrode tip moist,
e.g. in KCl solution (3 mol/l).
PARAM
MEAS CAL
DIAG
PARAM
MEAS CAL
DIAG
CAL.CDR
➀Clean and dry the
electrode and lower
parts of the assembly.
Check the electrode for
mechanical damage.
➁Immerse the electrode
in buffer 1 (e.g. pH 7). ➂Perform the calibration on the measuring
instrument.
➃Rinse the electrode with
distilled water.
➄Immerse the electrode
in buffer 2 (e.g. pH 4). ➅Perform the calibration on the measuring
instrument.
➆Rinse the electrode with
distilled water.
Fig. 4.1 Calibration
PA441E04.CHP
UniFit H CPA 441 Maintenance
Endress+Hauser 13

4.4 O-ring replacement
All O-rings in the assembly (see Fig. 4.2)
should be examined for damage from time
to time. The standard material for O-rings in
contact with medium is EPDM.
Note:
•Should an O-ring replacement
become necessary, then avoid
any damage to the new O-rings
and to the O-ring seat. Ensure that
a special O-ring material is used if
required by the medium.
•To grease polycarbonate parts
(e.g. couplings), only use lubricants
approved for this plastic material.
Otherwise there is a risk of stress
cracks on the polycarbonate
parts. Observe by all means the
instructions of the lubricant
manufacturer.
Example of a suitable lubricant:
ISOFLEX Topas AK 50
(art. no. 004151)
Manufacturer:
Klüber Lubrication KG, Munich
•Any other interventions in and
modifications of the assembly
are impermissible and will void
the warranty.
O-rings
O_RINGS.CDR
Fig. 4.2 O-rings in the CPA 441
Maintenance UniFit H CPA 441
14 Endress+Hauser

5 Accessories and spare parts
The following spare parts may be ordered
separately:
Combined pH electrodes
Electrode type Temperature pH
range
CPS 41-1 AB4 GSA –15 ... 80 °C 1 ... 12
CPS 41-2 AB4 TSA
with Pt 100 –15 ... 80 °C 1 ... 12
CPS 41-1 DB4 GSA 0...80°C 1 ... 12
CPS 41-2 DB4 TSA
with Pt 100 0...80°C 1 ... 12
Combined redox electrode
CPS 42-0 PB4 GSA
with platinum ring −15 ... 130 °C 0 ... 14
Built-in adapter
Material, version Order no.
PVDF, straight 50005194
PVDF, oblique 50029768
PVC, straight 50005193
PVC, oblique 50047270
1.4571 (SS 316Ti), straight 50005192
1.4571 (SS 316Ti), oblique 50028446
Protection guard
PVC, screw-in 50029764
1.4571 (SS 316Ti), plug-in 50028445
1.4571 (SS 316Ti), screw-in 50038929
O-ring set
EPDM 50029766
Viton 50043956
Dummy plug
1.4571 (SS 316Ti), DN 25 50028491
Measuring cable CPK 1 for combined
pH/redox electrodes
Cable length Order code
5 m CPK 1-050A
10 m CPK 1-100A
15 m CPK 1-150A
20 m CPK 1-200A
25 m CPK 1-250A
30 m CPK 1-300A
40 m CPK 1-400A
Measuring cable CPK 7 for combined
pH/redox electrodes with Pt 100
5 m CPK 7-05A
10 m CPK 7-10A
15 m CPK 7-15A
20 m CPK 7-20A
25 m CPK 7-25A
Junction box VBA
Features Order no.
For extension of measuring
cable connection between
assembly and measuring
instrument;
ingress protection IP 65
50005276
KCl-electrolyte solutions CPY 4 for
Ceraliquid electrodes
Concentration,
temp. range Volume Order code
3.0 mol,
–10 ... 100 °C
100 ml CPY 4-1
1000 ml CPY 4-2
1.5 mol,
–30 ... 100 °C
100 ml CPY 4-3
1000 ml CPY 4-4
PA441E05.CHP
UniFit H CPA 441 Accessories and spare parts
Endress+Hauser 15

6 Technical data
Note:
The operating limits of the entire
system are determined by the
operating limits of the individual
components used (assembly,
sensors, cables, accessories, etc.).
General data Manufacturer Endress+Hauser
Product designation UniFit H CPA 441
Materials in contact with medium Electrode holder stainless steel 1.4571 (SS 316Ti)
O-rings EPDM, Viton
Materials not in contact with medium O-rings silicone, EPDM
Electrolyte vessel PC (polycarbonate)
Electrolyte vessel cap PC (polycarbonate)
Coupling nut (built-in adapter version) stainless steel 1.4571 (SS 316Ti)
Mounting versions Without adapter PVC / PVDF / stainless steel 1.4571
(SS 316Ti)
Built-in adapter, straight or oblique stainless steel 1.4571 (SS 316Ti)
Dairy fitting stainless steel 1.4571 (SS 316Ti)
Tri-Clamp 2" stainless steel 1.4571 (SS 316Ti)
Operating pressure and temperature PVC version 8 bar at 20 °C, 0 bar at 50 °C
PVDF version 8 bar at 20 °C, 0 bar at 115 °C
Stainless steel version 8 bar at 90 °C, 0 bar at 130 °C
Electrolyte vessel 80 °C
Measures and weight Total volume 220 ml
Payload volume 150 ml
Electrode installation via Pg 13.5 thread
Shaft length 225 mm
Shaft diameter 12 mm
Weight approx. 2 kg
Supplementary documentation Technical Information
Ceraliquid CPS 41/42/43
order no. 50059346
Subject to modifications.
Pressure
[bar]
Temperature [°C]
3
140
0
PA441-PT.CDR
7
0
1
6
4
2
5
8
Max. permissible
vessel temperature
12010020 80
60
40
PVC
PVDF Stainless steel
Fig. 6.1 Pressure-temperature
diagram
Technical data UniFit H CPA 441
16 Endress+Hauser

7 Index
A
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . 15
Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Assembly cleaning . . . . . . . . . . . . . . . . . . . 12
B
Buffer solution . . . . . . . . . . . . . . . . . . . . . . . 13
Built-in adapter. . . . . . . . . . . . . . . . . . . . . 7, 15
C
Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Cleaning solution . . . . . . . . . . . . . . . . . . . . . 12
Coatings............................ 12
Combined pH electrodes . . . . . . . . . . . . . . 15
Combined redox electrode . . . . . . . . . . . . . 15
CPY4.............................. 15
D
Dairy fitting . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Damage............................. 2
Delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Depressurisation . . . . . . . . . . . . . . . . . . . . . 11
Differential pressure. . . . . . . . . . . . . . . . . . . 11
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Dummy plug. . . . . . . . . . . . . . . . . . . . . . . . . 15
E
Electrodecleaning.................... 12
Electrode connection,
symmetrical high-impedance . . . . . . . . . . 13
Electrode installation . . . . . . . . . . . . . . . . . . . 8
Electrode replacement . . . . . . . . . . . . . . . . . 8
Electrolyte filling level. . . . . . . . . . . . . . . . . . 10
Electrolyte solutions . . . . . . . . . . . . . . . . . . . 15
F
Fillinglevel.......................... 10
Filling with electrolyte. . . . . . . . . . . . . . . . . . 10
G
General information . . . . . . . . . . . . . . . . . . 2-3
H
Hazards............................. 2
I
Installation ........................ 6-11
Intendeduse ......................... 4
J
Junctionbox......................... 15
L
Lubricants . . . . . . . . . . . . . . . . . . . . . . . . . . 14
M
Maintenance . . . . . . . . . . . . . . . . . . . . . . 12-14
Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Measuring cable . . . . . . . . . . . . . . . . . . . 6, 15
Measuring system . . . . . . . . . . . . . . . . . . . . . 6
Mounting clearance . . . . . . . . . . . . . . . . . . . 6
Mounting of measuring cable . . . . . . . . . . . . 8
Mounting positions . . . . . . . . . . . . . . . . . . . . 7
Mounting versions . . . . . . . . . . . . . . . . . . . 3, 7
O
O-ring material . . . . . . . . . . . . . . . . . . . . . . . 3
O-ring replacement. . . . . . . . . . . . . . . . . . . 14
O-ring set. . . . . . . . . . . . . . . . . . . . . . . . . . . 15
P
Packaging . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
PMconnection ...................... 13
Pressurisation . . . . . . . . . . . . . . . . . . . . . . . 11
Product structure. . . . . . . . . . . . . . . . . . . . . . 3
Protection guard . . . . . . . . . . . . . . . . . 3, 8, 15
Protection sleeve. . . . . . . . . . . . . . . . . . . . . . 9
Q
Questions . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
R
Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Regulations for installation . . . . . . . . . . . . . . 4
S
Safety. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-5
Socket wrench. . . . . . . . . . . . . . . . . . . . . . 2, 9
Soiling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . 15
Storage ............................. 2
Symbols............................. 2
Symmetrical high-impedance
electrode connection . . . . . . . . . . . . . . . . 13
T
Technicaldata....................... 16
Threaded plug-in head . . . . . . . . . . . . . . . . . 8
Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
U
Unpacking. . . . . . . . . . . . . . . . . . . . . . . . . . . 2
V
Varivent adapter . . . . . . . . . . . . . . . . . . . . . . 8
PA441E07.CHP
UniFit H CPA 441 Index
Endress+Hauser 17

Europe
Austria
❑Endress+Hauser Ges.m.b.H.
Wien
Tel. [phone], Fax [phone]
Belarus
Belorgsintez
Minsk
Tel. [phone], Fax [phone]
Belgium / Luxembourg
❑Endress+Hauser S.A./N.V.
Brussels
Tel. [phone], Fax [phone]
Bulgaria
INTERTECH-AUTOMATION
Sofia
Tel. [phone], Fax [phone]
Croatia
❑Endress+Hauser GmbH+Co.
Zagreb
Tel. [phone], Fax [phone]
Cyprus
I+G Electrical Services Co. Ltd.
Nicosia
Tel. [phone], Fax [phone]
Czech Republic
❑Endress+Hauser GmbH+Co.
Praha
Tel. [phone], Fax [phone]
Denmark
❑Endress+Hauser A/S
Søborg
Tel. [phone], Fax [phone]
Estonia
Elvi-Aqua
Ta r tu
Tel. [phone], Fax [phone]
Finland
❑Endress+Hauser Oy
Espoo
Tel. [phone], Fax [phone]
France
❑Endress+Hauser
Huningue
Tel. [phone], Fax [phone]
Germany
❑Endress+Hauser Meßtechnik GmbH+Co.
Weil am Rhein
Tel. [phone], Fax [phone]
Great Britain
❑Endress+Hauser Ltd.
Manchester
Tel. [phone], Fax [phone]
Greece
I & G Building Services Automation S.A.
Athens
Tel. [phone], Fax [phone]
Hungary
Mile Ipari-Elektro
Budapest
Tel. [phone], Fax [phone]
Iceland
Vatnshreinsun HF
Reykjavik
Tel. [phone], Fax [phone]
Ireland
Flomeaco Company Ltd.
Kildare
Tel. [phone], Fax [phone]
Italy
❑Endress+Hauser Italia S.p.A.
Cernusco s/N Milano
Tel. [phone], Fax [phone]
Latvia
Raita Ltd.
Riga
Tel. [phone], Fax [phone]
Lithuania
Agava Ltd.
Kaunas
Tel. [phone], Fax [phone]
Netherlands
❑Endress+Hauser B.V.
Naarden
Tel. [phone], Fax [phone]
Norway
❑Endress+Hauser A/S
Tranby
Tel. [phone], Fax [phone]
Poland
❑Endress+Hauser Polska Sp. z o.o.
Warszawy
Tel. [phone], Fax [phone]
Portugal
Tecnisis - Tecnica de Sistemas Industriais
Linda-a-Velha
Tel.[phone], Fax[phone]
Romania
Romconseng SRL
Bucharest
Tel.[phone], Fax[phone]
Russia
❑Endress+Hauser Moscow Office
Moscow
Tel., Fax: see Endress+Hauser GmbH+Co.
Instruments International
Slovak Republic
Transcom Technik s.r.o.
Bratislava
Tel. [phone], Fax [phone]
Slovenia
❑Endress+Hauser D.O.O.
Ljubljana
Tel. [phone], Fax [phone]
Spain
❑Endress+Hauser S.A.
Barcelona
Tel.[phone], Fax[phone]
Sweden
❑Endress+Hauser AB
Sollentuna
Tel.[phone], Fax[phone]
Switzerland
❑Endress+Hauser AG
Reinach/BL 1
Tel. [phone], Fax [phone]
Turk ey
Intek Endüstriyel Ölcüve Kontrol Sistemleri
Istanbul
Tel. [phone], Fax [phone]
Ukraine
Industria Ukraïna
Kiev
Tel.[phone], Fax[phone]
Yugoslavia
Meris d.o.o.
Beograd
Tel. [phone], Fax [phone]
Africa
Egypt
Anasia
Heliopolis/Cairo
Tel.[phone], Fax[phone]
Morocco
Oussama S.A.
Casablanca
Tel. [phone], Fax [phone]
Nigeria
J F Technical Invest. Nig. Ltd.
Lagos
Tel. [phone], Fax [phone]
South Africa
❑Endress+Hauser Pty. Ltd.
Sandton
Tel. [phone], Fax [phone]
Tunisia
Controle, Maintenance et Regulation
Tunis
Tel. [phone], Fax [phone]
America
Argentina
❑Endress+Hauser Argentina S.A.
Buenos Aires
Tel. [phone],
Fax [phone]
Bolivia
Tritec S.R.L.
Cochabamba
Tel. [phone], Fax [phone]
Brazil
❑Samson Endress+Hauser Ltda.
Sao Paulo
Tel. [phone], Fax [phone]
Canada
❑Endress+Hauser Ltd.
Burlington, Ontario
Tel. [phone], Fax [phone]
Chile
DIN Instrumentos Ltda.
Santiago
Tel. [phone], Fax [phone]
Colombia
Colsein Ltd.
Bogota D.C.
Tel. [phone], Fax [phone]
Costa Rica
EURO-TEC S.A.
San Jose
Tel. [phone], Fax [phone]
Ecuador
Insetec Cia. Ltda.
Quito
Tel. [phone], Fax [phone]
Guatemala
ACISA Automatizacion Y Control Industrial S.A.
Ciudad de Guatemala, C.A.
Tel. [phone], Fax [phone]
Mexico
❑Endress+Hauser I.I.
Mexico City
Tel. [phone], Fax [phone]
Paraguay
Incoel S.R.L.
Asuncion
Tel.[phone],Fax [phone]
Uruguay
Circular S.A.
Montevideo
Tel. [phone], Fax [phone]
USA
❑Endress+Hauser Inc.
Greenwood, Indiana
Tel. [phone], Fax [phone]
Venezuela
H. Z. Instrumentos C.A.
Caracas
Tel. [phone], Fax [phone]
Asia
China
❑Endress+Hauser Shanghai
Instrumentation Co. Ltd.
Shanghai
Tel.[phone],Fax [phone]
❑Endress+Hauser Beijing Office
Beijing
Tel. [phone], Fax: [phone]
Hong Kong
❑Endress+Hauser (H.K.) Ltd.
Hong Kong
Tel. [phone], Fax [phone]
India
❑Endress+Hauser India Branch Office
Mumbai
Tel. [phone], Fax [phone]
Indonesia
PT Grama Bazita
Jakarta
Tel. [phone], Fax [phone]
Japan
❑Sakura Endress Co., Ltd.
Tokyo
Tel. [phone], Fax [phone]
Malaysia
❑Endress+Hauser (M) Sdn. Bhd.
Petaling Jaya, Selangor Darul Ehsan
Tel. [phone], Fax [phone]
Pakistan
Speedy Automation
Karachi
Tel. [phone], Fax [phone]
Papua New Guinea
SBS Electrical Pty Limited
Port Moresby
Tel. [phone], Fax [phone]
Philippines
Brenton Industries Inc.
Makati Metro Manila
Tel. [phone], Fax [phone]
Singapore
❑Endress+Hauser (S.E.A.) Pte., Ltd.
Singapore
Tel. [phone], Fax [phone]
South Korea
❑Endress+Hauser (Korea) Co., Ltd.
Seoul
Tel. [phone], Fax [phone]
Taiwan
Kingjarl Corporation
Taipei R.O.C.
Tel. [phone], Fax [phone]
Thailand
❑Endress+Hauser Ltd.
Bangkok
Tel. [phone], Fax [phone]
Vietnam
Tan Viet Bao Co. Ltd.
Ho Chi Minh City
Tel. [phone], Fax [phone]
Iran
Telephone Technical Services Co. Ltd.
Tehran
Tel. [phone], Fax[phone]
Israel
Instrumetrics Industrial Control Ltd.
Tel-Aviv
Tel. [phone], Fax [phone]
Jordan
A.P. Parpas Engineering S.A.
Amman
Tel. [phone], Fax [phone]
Kingdom of Saudi Arabia
Anasia
Jeddah
Tel. [phone], Fax [phone]
Kuwait
Kuwait Maritime & Mercantile Co. K.S.C.
Safat
Tel. [phone], Fax [phone]
Lebanon
Nabil Ibrahim
Jbeil
Tel. [phone], Fax [phone]
Sultanate of Oman
Mustafa & Jawad Science & Industry Co.
L.L.C.
Ruwi
Tel. 60 20 09, Fax 60 70 66
United Arab Emirates
Descon Trading EST.
Dubai
Tel. [phone], Fax [phone]
Yemen
Yemen Company for Ghee and Soap Industry
Tai z
Tel. [phone], Fax [phone]
Australia + New Zealand
Australia
GEC Alsthom LTD.
Sydney
Tel. [phone], Fax [phone]
New Zealand
EMC Industrial Instrumentation
Auckland
Tel. [phone], Fax [phone]
All other countries
❑Endress+Hauser GmbH+Co.
Instruments International
D-Weil am Rhein
Germany
Tel. [phone], Fax [phone]
BA 026C/07/en/06.99
Printed in Germany / CV5
❑Members of the Endress+Hauser group
Hauser+Endress
Nothing beats know-how
51500738