MJK PHiX User manual

SW 836502
EN pHix Compact Manual 1507
pH and Redox Transmitter
EN 4.10 PHIX Manual 1507
PHiX
pH- og Redoxtransmitter
MANUAL
EN 4.10 PHIX MANUAL

2
pH and Redox Transmitter
EN pHix Compact Manual 1507
MJK Automation ApS • Byageren 7 • DK-2850 Naerum • Tel: [phone] • Fax: [phone] • [email protected] • www.mjk.com
Konformitätserklärung
Wir, MJK Automation ApS,
DK-2850 Naerum, erklären in al-
leiniger Verantwortung, dass das
Produkt
auf das sich diese Erklärung
bezieht mit der/den folgenden
Nor me(en) oder normativen
Dokument(en) übereinstimmt.
Gemäss den Bestimmungen der
Richtlinie
Declaration of Conformity
We, MJK Automation ApS,
DK-2850 Naerum, declare under
our sole responsibility that the
product
to which this declaration relates
is in conformity with the following
standard(s) or other normative
document(s).
following the provisions of
Directive
Declaration de conformite
Nous, MJK Automation ApS,
DK-2850 Naerum, déclarons
sous notre seule responsabilité
que le produit
auquel se réfère cette déclara-
tion est conforme á la (aux)
norme(s) ou autre(s) document(s)
normatif(s)
conformément aux dispositions
de Directive
Dichiarazione di conformità
Noi, MJK Automation ApS,
DK-2850 Naerum, dichiariamo
sotto la nostra esclusiva respon-
sabilità che l’apparecchio
al quale questa dichiarazione si
riferisce, è conforme alla seg-
uente normativa(e) standard o ad
altri documenti di normativa(e)
conformemente alla disposizioni
della Direzione
Declaración de Conformidad
Nosotros, MJK Automation ApS,
DK-2850 Naerum, declaramos
bajo nuestra única responsabili-
dad que el producto
al cual se refiere esta de-
claración, está en conformidad
con la(s) siguente(e) norma(s) u
otros documentos normativos
según las disposiciones de la(s)
directiva(s)
Konformitetserklæring
Vi, MJK Automation ApS,
DK-2850 Nærum, påtager os
det fulde ansvar for at produktet
som denne erklæring angår, er
i overensstemmelse med føl-
gende standard(er) eller andre
normdokument(er).
efter bestemmelserne i
direktiv
Jens Kruse
28.08.2013
CE
CE
pHix® Compact pH / redox / temperature transmitter
pHix® Compact pH / redox / temperature transmitter
EN 61000-6-4 2007-02-19 • EN 61000-6-2 2005-09-08
EN 61000-6-4 2007-02-19 • EN 61000-6-2 2005-09-08
89/336/EEC, 2004/108/EC, 1999/EC
89/336/EEC, 2004/108/EC, 1999/EC

3SW 836502
pH and Redox Transmitter
Contents
Introduction ............................. 5
Safety instructions ..................... 5
Repair ........................................... 5
Explosion hazardous areas ........... 5
Construction ............................. 6
Product identification ................. 6
Mounting ..................................7
Electrode types ............................. 7
Mounting the electrode ............. 8
Gasket, O-ring and plug ................ 8
Mechanical mounting .............. 10
General ....................................... 10
Open and closed systems .......... 10
Mounting in open channels and
reservoirs .................................... 10
Mounting in closed systems ........ 11
Mounting on a pipe stub ............. 12
Electrical mounting .................. 13
General ....................................... 13
Signal cable ................................ 13
Cutting the signal cable ...................
Cutting the signal cable ............... 14
Extending the signal cable .......... 14
Connection examples .............. 15
Local display ............................... 15
Panel display .............................. 15
Connection to PLC/PLS .............. 15
Buffer adjustment .................. 16
General ................................... 16
Buffer liquid ............................. 16
Cleaning .................................. 17
Buffer adjustment using the
switch ring............................... 17
Example of buffer adjustment
in pH 4 and 7 .............................. 18
Buffer adjustment using the tilt
switch ..................................... 19
Maintenance ..........................21
General ................................... 21
Intervals ...................................... 21
Redox electrodes ........................ 21
Cleaning of elektrodes ............. 21
Electrode lifetime ..................... 21
Spares .................................... 22
Dimensions ............................. 22
Specifications .......................... 22
Dimensions ............................. 22
Appendices ............................ 23
Error codes ............................. 23
Standard transmitter
configuration ........................... 23
HART® commands: ................. 23
Accessories for mechanical
mounting ................................. 24
Accessories for electrical
mounting ................................. 25

4
pH and Redox Transmitter
EN pHix Compact Manual 1507

5
SW 836502
Introduction
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 uni-
on 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® is registered trademark of MJK.
MJK Automation is a Xylem Brand!
Safety instructions
1: Read this manual carefully.
2: Be aware of the environment on the in-
stallation 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.
Repair
1: Repair must only made by MJK or by a
service representative approved by MJK.
Explosion hazardous areas
pHix® Compact must not be installed in
explosion hazardous areas!

6
Introduction
EN pHix Compact Manual 1507
Construction
pHix® Compact is a 4-20 mA 2-wire trans-
mitter with power supply and measuring
signal transmitted over the same two wires.
pHix® Compact also has HART® communi-
cation capabilities via the mA wires where
both the primary measuring signal (pH or re-
dox) and the secondary measurement signal
can be read. HART® communication gives
the possibility to configure nearly all para-
meters like measuring ranges, alarm limits,
electrode parameters and also commands
for buffer adjustment.
HART® communication requires that pHix®
Compact is connected to a HART® commu-
nicator or a PLC with HART® interface.
pHix® Compact is delivered as standard for
pH or redox masurement, but can also be
delivered for other types of measurement
and non-standard settings.
An identical marking is found on the pH
transmitter cable:
Product identification
Check that the item(s) delivered corre-
sponds to the ordered item(s). The item
number is printed on a label that is sticked
onto the packing. Shown below is the label
for a delivery including a pHix® Compact
transmitter with pH electrode with zero point
at pH 4,6:
➀
➁
➂
➀
➃
➀ Item number.
➁ Item description.
➂ Serial no.
➃ Electrode specifi-
cation.

7
Mounting
SW 836502
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.

8
Mounting
EN pHix Compact Manual 1507
Mounting the electrode
Upon delivery of pHix Compact®, the elec-
trode 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 is was delivered.
pHix Compact® shoud be used only with
the electrode type included the delivery.
Contact MJK if other electrode types should
be used.
Replacement of the electrode to another of
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, O-ring and plug
It is very important that both gasket and
O-ring and packing surfaces is 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 ant that they are placed correctly.
Likewise, the connectors in both transmitter
and electrode should be absolutely clean
and dry. Eventually use a dry cloth.
Check that the connectors are
absolutely clean and dry.

9
Mounting
SW 836502
1: Smear 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.
Do not use tools!
5: Finally, pHix® Compact must be buffer
adjusted prior to commissioning.
See pg. 16.

10
Mounting
EN pHix Compact Manual 1507
Mounting in open channels and reservoirs
Due to the lifetime of the electrode and
measurement accuracy, the following should
possibly 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.
Suspended in the cable
If the liquid is flowing relatively slow and
therefore giving no risk of pHix® Compact
hitting the side of the channel/reservoir,
pHix® Compact may be suspended in the
cable by means of a cable bracket.
Mechanical mounting
General
pHix® Compact is made from Ryton (PPS)
and stainless steel (EN 1.4404 / ASTM
316L), and has because of this a tremende-
ous resistance against chemicals.
pHix® Compact can be used without any
further preparation for measuring in solvents
and strong basic or acid liquids.
Open and closed systems
pHix® Compact is designed for measuring in
both open and closed systems.
Open systems is e.g. gutters, wells, and
reservoirs. Closed systems is e.g. pipe
systems or tanks/vessels.
pHix® Compact is submerged directly into the
liquid and is suspended in the cable by means of a
cable bracket (item no. 560916).
pHix® Compact con-
forms to pressure
class PN 5, and can
therefore be mounted
in closed systems
with a working pres-
sure of max. 5 bar.
pHix® Compact
has class IP 68
enclosure, and
therefore withstands
submersion into open
system to a max.
pressure of
1 bar / 10 mWG.
Max.
10 m !
Max.
5 bar !

11
Mounting
SW 836502
Mounted on a pipe end
When measuring in e.g. open tanks, inlet
wells or gutters where strong currents can
occur, 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
screw pHix® Compact directly into the pipe.
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).
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.
pHix® Compact can be screwed into a
pipe stub with 2" outer thread by means of
an union (item no. 521409), that is placed
over the housing flange after removal of the
switch ring.
Because of the liquid inside the electrode,
pHix® Compact should always be mounted in
angles less than 75 ° from vertical.
The switch ring is only used for buffer ad-
justment (calibration), but it is also possible
to perform a buffer adjustment without using
the switch ring. See also pg. 16, "Buffer
adjustment".
Put on the
switch ring - if
needed.
Put on the
union.
Pull off the
switch ring.

12
Mounting
EN pHix Compact Manual 1507
Mounting on a pipe stub
In order to ensure a tight seal and correct
function of pHix® Compact, the following
should be complied with:
1: The pipe stub must be flush and free of
scales, burrs etc.
2: The pipe stub must have a length so
that the tip of the electrode is exposed
approximately 10 mm into the liquid.
3: Take care to have adequate room for
mounting and removal o f pHix® Com-
pact.
4: The working pressure of the system
must not exceed 5 bar g.
5: The working temperature of the s ystem
must not exceed 80 °C.
See also the following illustrations for correct
adaptation to the pipe system.
Approx. 10 mm
pHix® Compact is mounted correctly when the
electrode tip is exposed approximately 10 mm out
from the inner lining of the pipe.
Min. 25 mm
thread
2 " outer pipe
thread (ISO
228-1)
80 mm to
inner lining
Viton gasket
Min. 320 mm
free space for
mounting/re-
moval of pHix®
Compact.
Max. working pressure = 5 bar g.
Maks. working temperature = 80 °C.

13
Mounting
SW 836502
Electrical 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 be supplied from a
separate 12 - 30 VDC voltage source.
Max. power consumption is 50 mW.
pHix® Compact's 4-20 mA output(s) is gal-
vanically separated from the liquid.
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.
pHix® Compact with 2 x 4-20 mA outputs, 1 for
ph or redox measurement and 1 for temperature
measurement.
➀
➁
➂
➀
➁
➂
1 1
2 2
➀
➁
➂
➃
➄
1 1
2 2
PVC Cable PVC Cable PUR Cable
-> 2005 2006 -> 07 2007 ->
Nr.: Designation: Color: Color: Color: Signal:
1 Shield
2 + 12-30 V DC Red Red 1 Black pH- or redox signal
3 - 4-20 mA Black Black 2 Black Output 1
PVC Cable PVC Cable PUR Cable
-> 2005 2006 -> 07 2007 ->
Nr.: Designation: Color: Color: Color: Signal:
1 Shield
2 + 12-30 V DC Red Red 1 Black pH- or redox signal
3 - 4-20 mA Black Black 2 Black Output 1
4 + 12-30 V DC Yellow Orange Grey Temperature signal
5 - 4-20 mA Orange Brown Brown Output 2
Note:
PHix Compact is delivered with
cables made of PVC or PUR.
Check the type of cable according
to the specifications before con-
necting pHix Compact.

14
Mounting
EN pHix Compact Manual 1507
Extending the signal cable
There are no specific demands to the cable
that may be used for extending the existing
cable, except that it should be shielded and
that the voltage drop should not be too big.
pHix Compact® is a passive transmittter.
Considerations should be taken regar-
ding the voltage drop over
the signal cable.
The supply voltage on the site must not
drop below 12 V DC at maximum current
(20 mA.)
In order not to compromise operational re-
liability, the cables should be interconnected
by means of a watertight connection box
(item no. 200590).
MJK connection box (item no. 200590).
Cutting the signal cable
The cable comes with stripped wire ends
ready for mounting.
Shield
1 Black
2 Black
Shield
1 Black
2 Black Grey Brown
Uncutted cable end for pHix® Compact
with 1 respectively 2 signal outputs.
Besides the signal wires, the cable also con-
tains wires solely used for service purposes
and software upgrades.
These cables are exposed when the cable
is cut.
The cable for a pHix® Compact
with dual outputs is cut and the service wires are
exposed.
1 Black
2 Black
Shield
Brown
Grey
Yellow
Green
White
Service
wires:
The service wires must not be used !
Only the signal wires (1 black + 2 black /
grey + brown) and shield may be used!

15
Mounting
SW 836502
Connection examples
Local display
L
N
2 2
1
1
+_
MJK Power
Supply 515
MJK Digital
Indicator 531
Cable from
pHix® Compact
24 VDC supply
Connection to PLC/PLS
2
2
1
1
Panel display
MJK Digital
Indicator 533
L
N
4-20 mA signal with 24 V DC
supply from 533
Cable from
pHix® Compact
2 x voltage free
relay outputs
R1 R2
1
1
2 2
+_
1
1
2 2
PLC/PLS with
passive input
PLC/PLS with
active input
MJK Power
Supply 515
Cable from
pHix® Compact
Cable from
pHix® Compact
L N
+
-
+
-
12-30 VDC

16
Buffer Adjustment
EN pHix Compact Manual 1507
Buffer adjustment
General
In order to ensure a precise and stable pH
measurement, pHix® Compact must be buf-
fer adjusted with regular intervals.
Buffer adjustment is a calibration, which
is carried out in practice by dipping pHix®
Compact in solutions (buffers) with known
pH values. The calibration is made by using
these known pH values as a reference point.
pHix® Compact is buffer adjusted using 2
buffers with pH values of 4 and 7 (acidic
range) or pH values of 7 and 10 (alkalic
range). For measurements around pH 7
(neutral) both buffers can be used.
The sequence of different pH buffer soluti-
ons is not important. pHix® Compact auto-
matically detects which buffer is used for
ajusting the point of origin, and which buffer
is used for ajusting the slope (sensitivity).
The first reference point sets the correct
zero point for the measurement curve, and
the second reference point sets the correct
slope for the measurement curve.
pHix® Compact is as standard delivered to
use buffer values at the values 4, 7 and 10,
but other values can be chosen via HART®
communication.
Buffer liquid
Buffer liquid is delivered as ready-to-use
solutions with the pH values 4, 7 and 10.
During the buffer adjustment, pHix®
Compact is calibrated in accordance with
the pH values of the buffer solutions. It is
therefore important to use as accurate buf-
fer solutions as possible, i.e. a pH 7 buffer
solution really has a pH value of exactly 7.
MJK delivers buffer solutions for both
pH og redox calibration.
The pH value of the buffer liquid is depen-
dant of the temperature, and the stated pH
value is valid at 25 °C.
Buffer liquid has limited lifetime. Bufferliquid
for pH 4 and 7 has a life time of approx. 1
year, and buffer liquid for pH 10 is so-
mewhat shorter.
Note, that buffer liquid with pH 10 is very
unstable, and should therefore be disposed
of no more than 1 hour after it has been
poured from the bottle.
First buffer adjustment with pH 7 as reference.
Second buffer adjustment with pH 4 as reference.

17
Buffer Adjustment
SW 836502
Cleaning
Before initiation of a buffer adjustment, the
electrode should be rinsed in running water
and additionally in demineralized water be-
fore the electrode is lowered into the buffer
liquid - and again between every step in the
buffer adjustment process.
Use only fresh buffer solutions! Dispose of
any used buffer liquid.
Take care that transmitter, electrode and
buffer solution has the same temperature -
preferably approx. 25 °C.
Put eventually pHix® Compact in a bucket
of lukewarm water before commencing a
buffer adjustment.
Buffer adjustment using the switch ring
Remember to clean the electrode as descri-
bed in the previous section!
When the switch ring has been put on for at
least 10 minutes, it will only be possible to
buffer adjust pHix® Compact with the switch
ring.
The switch ring has 4 positions, and must
only be set to one of these positions in order
to obtain correct function:
Pos.: Function:
M Measurement.
The switch ring should always be in this
positioni during normal service (measuring)
This is indicated by the LED that is flashing
for approx. every 5 seconds.
4 Buffer adjustment in buffer with
pH value pH 4.
7 Buffer adjustment in buffer with
pH value pH 7.
10 Buffer adjustment in buffer with
pH value pH 10.
If the switch ring is set to one of the positi-
ons 4, 7 or 10, the LED will give out 3 short
flashes every 5 seconds.
If pHix® Compact is being put into a buffer
liquid with the same value as the switch
ring is set to, pHix® Compact will automa-
tically begin to scan for a buffer with the
same value. When the value is found, pHix®
Compact will automatically set the 0-point
or span to the correct value, and the LED
will indicate this with 2 short flashes every 5
seconds.
pHix® Compact is now ready either for mea-
surement or for another buffer adjustment at
another pH value.
pHix® Compact determines automatically
if zero point or span need to be adjusted
depending of the electrode's zero point and
the preceeding buffer values.
If pHix® Compact cannot find the pH value
for the selected buffer solution, it will go
into alarm condition, which is indicated with
continuous LED flashes every second.

18
Buffer Adjustment
EN pHix Compact Manual 1507
In service (measure-
ment).
1 flash every 5.
second.
Buffer adjustment in
pH 4 buffer.
Buffer adjustment in
pH 7 buffer.
Buffer adjustment in
pH 10 buffer.
Example of buffer adjustment in pH 4 and
7
1: With the switch ring in position 'M', flush
the electrode tip in demineralised water.
(The LED gives 1 short flash every 5.
sec.)
2: Turn the switch ring from position 'M' to
position '7', and dip the electrode tip into
the pH 7 buffer solution.
(The LED will now begin to give 3 short
flashes every 5 sec.)
When the buffer adjustment has finished
sucessfully, the LED will start to give 2
short flashes every 5. sec.
The zero point is now set.
3: Turn the switch ring from position '7' to
position '4', and dip the electrode tip into
the pH 4 buffer solution.
(The LED will now begin to give 3 short
flashes every 5 sec.)
When the buffer adjustment has finished
sucessfully, the LED will start to give 2
short flashes every 5. sec.
The span angle is now set.

19
Buffer Adjustment
SW 836502
Buffer adjustment using the tilt switch
Remember to clean the electrode as descri-
bed in the previous section!
Only the built-in tilt switch is active, when
the switch ring has been removed for more
than 10 minutes.
The tilt switch inside pHix® Compact detects
when the electrode tip is turned upwards.
When the electrode tip has been turned
upwards in more than 30 seconds, pHix®
Compact will go into buffer adjustment
mode.
Proceed as described:
Remove pHix® Compact from the process,
rinse the electrode, and turn the electrode
upside down.
The buffer adjustment mode is initiated after
approx. 30 seconds - this is indicated by the
LED with 3 short flashes every 5 seconds.
If pHix® Compact is dipped into a buffer
solution with a value of 4, 7 or 10 pH, pHix®
Compact automatically search for a buffer
with one of those values. When the correct
value is found, the zero point or span will
automatically be set to the right value. The
LED will give 1 short flash every 5 seconds
for indication of a succesful calibration.
pHix® Compact is now ready to be put into
service or for another buffer adjustment with
another pH value.
If a new buffer adjustment to another (or
same) pH value, pHix® Compact is simply
turned upside-down again with the elec-
trode tip pointing upwards in approximately
30 seconds until the LED gives 3 short
flashes every 5 seconds, whereafter above
procedure is repeated.
If pHix® Compact cannot find the correct
value for the selected buffer liquid, the trans-
mittter will go into fault condition indicated
by a flash every second.
The pHix® Compact software determines
automatically whether it is the zero point or
the span that need adjustment depending
on the zero point value of the electrode and
the preceeding buffer values.

20
Buffer Adjustment
EN pHix Compact Manual 1507