Xylem MJK pHix Compact V3 NG User manual

Manual
EN 4.10 Version 2202
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pHix® Compact V3.
NG (NEXT GENERATION)

pHix® Compact V3. NG (next generation)
EN 4.10 Version 2202
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Your notes:
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pHix® Compact V3. NG (next generation)
EN 4.10 Version 2202
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Table of Contents
Declaration of conformity ..........................................................................................................6
Introduction.................................................................................................................................7
Measurements and standards used .....................................................................................7
Safety instructions...................................................................................................................7
Repair .................................................................................................................................. 7
Explosion hazardous areas............................................................................................... 7
Construction............................................................................................................................8
Product identification.............................................................................................................8
Mounting ...................................................................................................................................10
Electrode types .................................................................................................................... 10
Mounting the electrode...................................................................................................... 10
Gasket and O-ring ........................................................................................................... 11
Mechanical mounting.......................................................................................................... 12
Open and closed systems .............................................................................................. 12
Mounting in open channels and reservoirs..................................................................14
Mounting in closed systems...........................................................................................16
Mounting on pipe socket................................................................................................ 17
Eletrical mounting................................................................................................................ 19
Signal cable ...................................................................................................................... 19
Cutting the signal cable..................................................................................................20
Extending the signal cable ............................................................................................. 20
Connection examples ......................................................................................................... 20
Local display..................................................................................................................... 21
Connection to PLC_PLS ..................................................................................................21
Buffer adjustment .....................................................................................................................22
Buffer adjustment details.................................................................................................... 22
Buffer solutions .................................................................................................................... 23
Cleaning................................................................................................................................ 24
Buffer adjustment using the switch ring ........................................................................... 25
Example of buffer adjustment in pH 4 and 7 ............................................................... 25
Buffer adjustment using the tilt switch.............................................................................. 26
Buffer adjustment using pHix Configurator ..................................................................... 28
Maintenance..............................................................................................................................29
Intervals................................................................................................................................. 29
Redox electrodes................................................................................................................. 29
Cleaning of the electrode................................................................................................... 29
Electrode lifetime................................................................................................................. 30
Electrode spare parts .......................................................................................................... 30
Electrode storage ................................................................................................................ 31
Specifications ....................................................................................................................... 31
Dimensions........................................................................................................................... 33
pHix Configurator software .....................................................................................................34
Programming connection................................................................................................... 34
K-114 RS-485.................................................................................................................... 34
Others RS-485 .................................................................................................................. 34
General information ............................................................................................................ 35
File handling..................................................................................................................... 35
Open configuration.....................................................................................................37
Save configuration.......................................................................................................41
Connection ....................................................................................................................... 42
Read from the sensor ...................................................................................................... 43
Write to the sensor .......................................................................................................... 44

pHix® Compact V3. NG (next generation)
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Toggle ............................................................................................................................... 44
Device settings................................................................................................................. 45
Device function ............................................................................................................46
Device setup.................................................................................................................47
Sensor Interface ...........................................................................................................54
Check for updates ........................................................................................................... 56
Help ................................................................................................................................... 59
Main configuration .............................................................................................................. 59
Information ....................................................................................................................... 59
Output scaling.................................................................................................................. 61
pH scaling .....................................................................................................................61
Redox scaling ...............................................................................................................63
Temperature scaling ...................................................................................................66
Buffer adjustment, pHix Configurator........................................................................... 70
Temperature compensation.......................................................................................71
Buffer solution values..................................................................................................72
MJK buffer values ........................................................................................................73
Buffer supplier..............................................................................................................76
Communication ............................................................................................................... 77
Online data........................................................................................................................... 77
Information - online ......................................................................................................... 77
Output values................................................................................................................... 78
pH actual value.............................................................................................................78
mV actual value ............................................................................................................79
Temperature actual value...........................................................................................80
mA actual value............................................................................................................80
Output mode................................................................................................................83
Buffer values..................................................................................................................... 84
Status ................................................................................................................................. 85
Register list ........................................................................................................................... 86
General descriptions....................................................................................................... 86
Register list, detailed....................................................................................................... 87
Appendencies...........................................................................................................................88
Error codes ........................................................................................................................... 88
Standard transmitter configuration ................................................................................... 88
Modbus communication..................................................................................................... 89

pHix® Compact V3. NG (next generation)
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Contact
You can always contact your local representative or the MJK support for advice
and guidance:
Europe: Tel.: [phone], e-mail: [email protected]
Visit our web site www.mjk.com to learn more about MJK Automation, our
other products and the people behind them.

pHix® Compact V3. NG (next generation)
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Declaration of conformity /
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Declaration of conformity

pHix® Compact V3. NG (next generation)
EN 4.10 Version 2202
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Introduction /Measurements and standards used
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Introduction
Thank you for choosing our 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 / IP 68 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.
You can always contact your representative or the MJK Support for advice and
guidance. Also, take a look at www.mjk.com1
pHix® Compact is registered trademark of MJK.
Measurements and standards used
This manual uses both the US standard measurement system (inches), Fahrenheit and
North American industry standards and the metric measurement system, Celsius and
European industry standards and side by side.
Safety instructions
Read this manual carefully.
Be aware of the environment on the installation site. Wear necessary protective
equipment and follow all current safety regulations.
Always ensure that connected machinery and other equipment are effectively
being put out of service (i.e.by log out/tag out) before commencing setting, fault
finding, service and maintenance work etc.
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!

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Construction
pHix® Compact is a loop powered 4-20 mA 4-wire transmitter with power supply and
measuring signal transmitted over the same pair of wires.
pHix® Compact also has Modbus® communication capabilities via the seperate RS485
wires where both the primary measuring signal (pH or redox) and the secondary
measurement signal can be read. Modbus® communication also gives the possibility to
configure nearly all parameters like measuring ranges, electrode parameters and also
buffer settings for buffer adjustment.
Modbus® communication requires that pHix® Compact is connected to a RS485
Communication device or a PLC with RS485 interface. The pH loop must be applied with
10-28VDC supply.
pHix® Compact is delivered as standard for pH or redox (ORP) measurement and
temperature, but can also be delivered with non-standard cable length.
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:
Item number
Item description
Serial number

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4. Electrode specification.
An identical marking is found on the pH transmitter cable:

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Mounting /Electrode types
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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, 50-176° F /10-80° C, 0 = 4.6 pH. 
pH electrode, item no. 160311, 1 - 14 pH, 50-176° F /10-80° C, 0 = 7.0 pH. 
Redox electrode, item no. 160312, 176° F /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.

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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.

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Check that the connectors are absolutely clean and dry.
Lubricate the O-ring in acid-free grease or Vaseline.
Check that the O-ring is placed correctly in the recess of the new electrode.
Check that the hole for the electrode in the pHix® Compact is completely dry – if
necessary use a dry cloth.
Screw in the new electrode and tighten by hand. Note! Do not use tools!
5. Finally, pHix® Compact must be buffer adjusted(see page22) prior to commissioning.
Mechanical mounting
pHix® Compact is made from PPS Fortron and/or stainless steel (EN 1.4404 / AISL316L)
and because of this, it has a tremendous resistance against chemicals.pHix® Compact
can, when mounted on a pipe socket, be used for measuring in solvents and strong
alcalic or acid liquids
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 V3. NG (next generation)
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THE US ALL OTHERS
pHix® Compact has class IP 68 /NEMA 6X enclosure, and therefore withstands
submersion into open system to a max. pressure of14 psi or 30 ft WG /1 bar or 10
mWG.

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THE US ALL OTHERS
pHix® Compact conforms to pressure class PN 5, and can therefore be
mounted in closed systems with a working pressure ofmax. 72 psi /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.
pHix® Compact should be mounted on a location with a good liquid circulation.
The electrode tip should be minimum 30 cm below the liquid surface.
The electrode tip must not touch the bottom.
The cable must not be hung in a cable bracket.

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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.
THE US ALL OTHERS
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.

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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(see page22) without using the switch ring.
Mounting on pipe socket
In order to ensure a tight seal and correct function of pHix® Compact, the following
should be complied with:
The pipe socket must be flushed and free of burrs, etc.
The pipe socket must have a length so that the tip of the electrode is immersed
min. 10 mm into the liquid.
Take care to have adequate room for mounting and removal of pHix® Compact.
The working pressure of the system must not exceed72 psi /5 bar g .
The working temperature of the system must not exceed 176° F /80° C.

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See also the following illustrations for correct adaptation to the pipe system.
US ONLY ALL OTHERS
Max working pressure = 72 psi /5 bar g. Max working temperature = 176° F /80° C.
US ONLY ALL OTHERS
pHix® Compact is mounted correctly when the electrode tip is emerged min. ½" in /10
mmunder the pipes inner pipe wall.

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Mounting /Eletrical mounting
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Eletrical mounting
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
10-28 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 two galvanically separated mA signal outputs and Modbus
RS485.
Note! pHix® Compact is delivered with cable made of PUR.
pHix® Compact with 2 x 4-20 mA outputs, one for pH or redox measurement and one
for temperature measurement.

pHix® Compact V3. NG (next generation)
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Mounting /Connection examples
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Cutting the signal cable
The cable comes with stripped wire ends ready for mounting.
pHix® Compact uncut cable-end with two signal outputs. 
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.
Note! pHix® Compact is a passive transmitter. Considerations
should be taken regarding the voltage drop over the signal
cable.
The supply voltage on the site must not drop below 10 V DC at
maximum current (20 mA.)
In order not to compromise operational reliability, the cables
should be interconnected by means of a watertight connection
box (item no. 200590).
MJK connection box (item no. 200590).
Connection examples
In order to communicate by RS-485, the pH loop must be applied by 10-28VDC.