Xylem MJK pHix Compact User manual

MANUAL
EN 4.10 pHix® Compact 1904
pHix® Compact
PH- AND REDOXTRANSMITTER

MANUAL
EN 4.10 pHix® Compact 1904
2
Your notes:

MANUAL
EN 4.10 pHix® Compact 1904
3
Table of contents
Declaration of conformity ................................................ 5
Introduction ..................................................................... 6
Measurements and standards used ........................................... 6
Safety instructions ................................................................... 6
Repair .................................................................................................. 7
Explosion hazardous areas ................................................................. 7
Construction ............................................................................ 7
Product identification ............................................................... 7
Mounting ......................................................................... 9
Electrode types ....................................................................... 9
Mounting the electrode ............................................................. 9
Gasket and O-ring ............................................................................. 10
Mechanical mounting ............................................................. 12
General .............................................................................................. 12
Open and closed systems ................................................................ 13
Mounting in open channels and reservoirs ........................................ 14
Mounting in closed systems .............................................................. 17
Mounting on pipe socket .................................................................... 18
Eletrical mounting .................................................................. 20
General .............................................................................................. 20
Signal cable ....................................................................................... 20
Cutting the signal cable ..................................................................... 21
Extending the signal cable ................................................................. 22
Connection examples ............................................................. 23
Local display ...................................................................................... 23
Connection to PLC/PLS .................................................................... 23
Buffer adjustment .......................................................... 24
General ................................................................................. 24
Buffer liquid ........................................................................... 25
Cleaning ............................................................................... 26
Buffer adjustment using the switch ring .................................... 26
Example of buffer adjustment in pH 4 and 7 ..................................... 28

MANUAL
EN 4.10 pHix® Compact 1904
4
Buffer adjustment using the tilt switch ....................................... 29
Maintenance .................................................................. 32
General ................................................................................. 32
Intervals .............................................................................................. 32
Redox electrodes ............................................................................... 32
Cleaning of the electrode ........................................................ 33
Electrode lifetime ................................................................... 33
Electrode spare parts ............................................................. 34
Electrode storage ................................................................... 35
Specifications ........................................................................ 36
Dimensions ........................................................................... 37
Appendencies ................................................................ 38
Error codes ........................................................................... 38
Standard transmitter configuration ........................................... 38
HART® commands ................................................................ 39

MANUAL
EN 4.10 pHix® Compact 1904
5
Declaration of conformity
Konformitetserklæring
Vi, MJK Automation A/S,
DK-3460 Birkerød, påtager os
det fulde ansvar for at
produktet
Declaration of Conformity
We, MJK Automation A/S,
DK-3460 Birkerød, declare
under our sole responsibility
that the product
Konformitätserklärung
Wir, MJK Automation A/S,
DK-3460 Birkerød, erklären in
alleiniger Verantwortung, dass
das Produkt
redox/ Temperatur transmitter
som denne erklæring angår, er
i overensstemmelse med
følgende standard(er) eller
andre normdokument(er).
EN61000-6-4 2007-02-19,
EN61000-6-2 2005-09-08
efter bestemmelserne i direktiv
89/336/EEC; 2004/108/EC,
1999/EC
to which this declaration relates
is in conformity with the
following standard(s) or other
normative document(s).
EN61000-6-4 2007-02-19,
EN61000-6-2 2005-09-08
following the provisions of
Directive
89/336/EEC; 2004/108/EC,
1999/EC
auf das sich diese Erklärung
bezieht mit der/den folgenden
Norme(en) oder normativen
Dokument(en) übereinstimmt.
EN61000-6-4 2007-02-19,
EN61000-6-2 2005-09-08
Gemäss den Bestimmungen
der Richtlinie
89/336/EEC; 2004/108/EC,
1999/EC
Declaration de conformite
Nous, MJK Automation A/S,
DK-3460 Birkerød, déclarons
sous notre seule responsabilité
que le produit
Dichiarazione di conformità
Noi, MJK Automation A/S,
DK-3460 Birkerød, dichiariamo
sotto la nostra esclusiva
responsabilità che
l’apparecchio
Declaración de Conformidad
Nosotros, MJK Automation A/S,
DK-3460 Birkerød, declaramos
bajo nuestra única
responsabilidad que el
producto
redox / Temperatur transmitter
auquel se réfère cette
déclaration est conforme á la
(aux) norme(s) ou autre(s)
document(s) normatif(s)
EN61000-6-4 2007-02-19,
EN61000-6-2 2005-09-08
conformément aux dispositions
de Directive
89/336/EEC; 2004/108/EC,
1999/EC
al quale questa dichiarazione si
riferisce, è conforme alla
seguente normativa(e)
standard o ad altri documenti
di normativa(e)
EN61000-6-4 2007-02-19,
EN61000-6-2 2005-09-08
conformemente alla
disposizioni della Direzione
89/336/EEC; 2004/108/EC,
1999/EC
al cual se refiere esta
declaración, está en
conformidad con la(s)
siguente(e) norma(s) u otros
documentos normativos
EN61000-6-4 2007-02-19,
EN61000-6-2 2005-09-08
según las disposiciones de la(s)
directiva(s)
89/336/EEC; 2004/108/EC,
1999/EC
28.08.2013
Jens Kruse

MANUAL
EN 4.10 pHix® Compact 1904
6
Introduction
Thank you for choosing a pHix® Compact pH / Redox transmitter.
We have done everything possible to make a pH / Redox transmitter that can
fulfill all your demands.
pHix® Compact is very simple to install and connect, as electrode, fitting and
transmitter is built together in the same NEMA 6X class enclosure. By doing
so, all error sources like e.g. bad cable connections and leaking fittings are
eliminated.
As pHix® Compact is equipped with an union flange in one end and male
thread in the other, the transmitter is very easily mounted in open tanks as
well as pipes without the usual use of fittings.
You can always contact your representative or the MJK Service Hotline for
advice and guidance. Also, take a look at www.mjk.com
pHix® Compact is registered trademark of MJK.
Measurements and standards used
This manual uses the metric measurement system, Celsius and European
industry standards where applicable.
Safety instructions
1. Read this manual carefully.
2. Be aware of the environment on the installation site. Wear necessary
protective equipment and follow all current safety regulations.
3. pHix® Compact can provide a start signal for dangerous machinery.
Always ensure that connected machinery and other equipment are
effectively being put out of service (i.e. removal of main fuses, lock main-
and/or security switches in off position) before commencing setting, fault
finding, service and maintenance work etc.

MANUAL
EN 4.10 pHix® Compact 1904
7
Repair
Repair must only made by MJK or by a service representative approved by
MJK.
Explosion hazardous areas
Note! pHix® Compact must not be installed in explosion hazardous areas!
Construction
pHix® Compact is a loop powered 4-20 mA 2-wire transmitter with power
supply and measuring signal transmitted over the same two wires.
pHix® Compact also has HART®communication capabilities via the mA wires
where both the primary measuring signal (pH or redox) and the secondary
measurement signal can be read. HART®communication gives the
possibility to configure nearly all parameters like measuring ranges, alarm
limits, electrode parameters and also commands for buffer adjustment.
HART®communication requires that pHix® Compact is connected to a
HART®communicator or a PLC with HART®interface.
pHix® Compact is delivered as standard for pH or redox measurement, but
can also be delivered for other types of measurement and non-standard
settings.
Product identification
Check that the item(s) delivered corresponds to the ordered item(s). The
item number is printed on a label that is sticked onto the packing. Shown in
the following, is the label for a delivery including a pHix® Compact
transmitter with pH electrode with zero point at pH 4,6:

MANUAL
EN 4.10 pHix® Compact 1904
8
1. Item number
2. Item description
3. Serial number
4. Electrode specification.
An identical marking is found on the pH transmitter cable:

MANUAL
EN 4.10 pHix® Compact 1904
9
Mounting
Electrode types
The electrode housing is marked with information about electrode type and
measuring range for the actual electrode:
pH electrode, item no. 160310, 1 - 14 pH, 10 - 80° C, 0 = 4.6 pH.
pH electrode, item no. 160311, 1 - 14 pH, 10 - 80° C, 0 = 7.0 pH.
Redox electrode, item no. 160312, 0 - 80° C.
Mounting the electrode
Upon delivery of pHix® Compact, the electrode is not mounted.
pHix® Compact is configured for the electrode type included in the delivery,
and therefore it must only be used together with the electrode with which it
was delivered.

MANUAL
EN 4.10 pHix® Compact 1904
10
Contact MJK if other electrode types should be used. Replacement of an
electrode to another of the same type does not require reconfiguration.
The electrode must not become dry. Therefore, do not remove the
protective cap before before commissioning of pHix® Compact.
Gasket and O-ring
It is very important that both gasket and O-ring and packing surfaces are
clean and smooth and without cracks and scratches to avoid penetration of
liquid in the center plug connection.
Check that gasket and O-ring are complete and clean and that they are placed
correctly.
Likewise, the connectors in both transmitter and electrode should be
absolutely clean and dry. Use a dry cloth if needed.
Check that the connectors are absolutely clean and dry.

MANUAL
EN 4.10 pHix® Compact 1904
11
1. Lubricate the O-ring in acid-free grease or Vaseline.
2. Check that the O-ring is placed correctly in the recess of the new
electrode.
3. Check that the hole for the electrode in the pHix® Compact is completely
dry – if necessary use a dry cloth.
4. Screw in the new electrode and tighten by hand. Note! Do not use tools!
5. Finally, pHix® Compact must be buffer adjusted prior to
commissioning.
24

MANUAL
EN 4.10 pHix® Compact 1904
12
Mechanical mounting
General
pHix® Compact is made from Ryton (PPS) and/or stainless steel (EN 1.4404 /
ASTM 316L), and because of this, it has a tremendous resistance against
chemicals.
pHix® Compact can, without any further preparation, be used for measuring
in solvents and strong alcalic or acid liquids.

MANUAL
EN 4.10 pHix® Compact 1904
13
Open and closed systems
pHix® Compact is designed for measuring in both open and closed systems.
Open systems are, for example, gutters, wells, and reservoirs. Closed
systems are, for example, pipe systems or tanks/vessels.
pHix® Compact has class IP 68 enclosure, and therefore withstands submersion
into open system to a max. pressure of 1 bar / 10 mWG

MANUAL
EN 4.10 pHix® Compact 1904
14
pHix® Compact conforms to pressure class PN 5, and can therefore be
mounted in closed systems with a working pressure of max. 5 bar.
Mounting in open channels and reservoirs
Due to the lifetime of the electrode and measurement accuracy, the
following should be complied with when mounting pHix® Compact.
1. pHix® Compact should be mounted on a location with a good liquid
circulation.
2. The electrode tip should be minimum 30 cm below the liquid surface.
3. The electrode tip must not touch the bottom.
4. The cable must not be suspended in a cable bracket.

MANUAL
EN 4.10 pHix® Compact 1904
15
Mounted on a pipe end
When measuring, pHix® Compact should be firmly fixed. Fixed mounting
can be made by means of a pipe with 5/4" inner thread (ISO 228-1), and
screwing pHix® Compact directly into the pipe.

MANUAL
EN 4.10 pHix® Compact 1904
16
pHix® Compact mounted directly on a immersion bracket (item no. 155205),
which is fastened with universal bracket (item no. 200205)
and wall bracket (item no. 200215).

MANUAL
EN 4.10 pHix® Compact 1904
17
Mounting in closed systems
The electrode is filled with a liquid which should cover the membrane
internally at all times. Therefore, pHix® Compact should not be mounted in
angles exceeding 75° from vertical.
Because of the liquid inside the electrode, pHix® Compact should always be
mounted in angles less than 75° from vertical.
pHix® Compact can be screwed into a pipe stub with 2" outer thread. This
can happen by means of an union (item no. 521409) placed over the
housing flange after removal of the switch ring.
Pull off the switch ring.
Put on the union.
Put on the switch ring if
needed.
The switch ring is only used for buffer adjustment (calibration), but it is also
possible to perform a buffer adjustment without using the switch ring.
24

MANUAL
EN 4.10 pHix® Compact 1904
18
Mounting on pipe socket
In order to ensure a tight seal and correct function of pHix® Compact, the
following should be complied with:
1. The pipe socket must be flushed and free of burrs, etc.
2. The pipe socket must have a length so that the tip of the electrode is
immersed min. 10 mm into the liquid.
3. Take care to have adequate room for mounting and removal of pHix®
Compact.
4. The working pressure of the system must not exceed 5 bar g.
5. The working temperature of the system must not exceed 80° C.
See also the following illustrations for correct adaptation to the pipe system.

MANUAL
EN 4.10 pHix® Compact 1904
19
Max working pressure = 5 bar g. Max working temperature = 80° C.
pHix® Compact is mounted correctly when the electrode tip is emerged
min. 10 mm under the pipes inner pipe wall.

MANUAL
EN 4.10 pHix® Compact 1904
20
Eletrical mounting
General
pHix® Compact must not be installed in explosion hazardous locations!
pHix® Compact should be connected to an active 4-20 mA input or supplied
from a separate 12-30 VDC voltage source.
Max power consumption is 50 mW.
pHix® Compact 4-20 mA output(s) is galvanically separated from the liquids
potential.
Signal cable
pHix® Compact comes with either 1 or 2 galvanically separated signal
outputs.
pHix® Compact with 1 x 4-20 mA output for pH or redox measurement.
Nr.
Designa-
tion
PUR cable >
2017 color
PUR cable >
2018 color
Signal
1)
12-30 (+) V DC
1 black
Red
pH- or redox
signal
2)
4-20 (-) mA
2 black
Black
Output 1
3)
Shield (not
signal
ground!)
Note! pHix® Compact is delivered with cables made of PVC or PUR. Check
the type of cable according to the specifications in the following before
connecting pHix® Compact.