Xylem MJK Oxix User manual
1GB Oxix Manual 1209 FW: 841013-009, 846001-002, 841513-009
Dissolved Oxygen Transmitter
Installation and User Manual
Dissolved Oxygen Transmitter
2GB Oxix Manual 1209 FW: 841013-009, 846001-002, 841513-009
Dissolved Oxygen Transmitter
CE CERTIFICATE OF CONFORMITY
This product complies with the requirements concerning electromagnetic compatibility (EMC)
stipulated in Council directive no. 89/336/EEC of 3rd may 1989, alteret at directive no. 92/31/
EEC, on the approximation of the laws of the member states relating to electromagnetic compat-
ibility.
CE approvals
We declare that the Oxix® transmitter complies with the values stipulated in EN-61010-1 and EN
61326-1.
Ex approval
The Oxix® transmitter is approved for mounting in explosive amospheres: Ex II G3.
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Table of Contents
1. Introduction 7
Operating Principles ....................................................10
Features ..............................................................11
2. Safety, Repair and Product Identification 13
Safety Instructions .....................................................13
Physical Mounting ......................................................13
Repair ................................................................13
Product Identification ...................................................13
3. Specifications and Order Numbers 15
Specifications ..........................................................15
Order Numbers .........................................................17
4. Sensor Installation 19
Physical Sensor Installation ..............................................20
Preparation ...........................................................20
Positioning the Sensor ..................................................20
5. Sensor Calibration 21
Zero-point Calibration Check .............................................21
2-point Calibration .....................................................21
6. Converter 23
Electrical Mounting .....................................................23
Power Supply .........................................................24
Display Connector .....................................................24
Changing the Power Supply Voltage 230/115 V AC . . . . . . . . . . . . . . . . . . . . . . . . . . . .25
Analogue Output ......................................................27
Digital Input ..........................................................28
Converter Terminals ....................................................29
Sensor and Mounting Kit / Connection Board Terminals . . . . . . . . . . . . . . . . . . . . . . . . .30
7. System Configuration Examples 31
Magflux® with Blind Lid and Oxix® with Display Unit ...........................32
Wiring Schematic #1 ...................................................33
SuSix® with Blind Lid, Magflux® with Blind Lid and a Remote Display . . . . . . . . . . . . .34
Wiring Schematic #2 ...................................................35
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8. Startup 37
Initial Checks before Power-up ............................................37
Initial Power-up ........................................................37
Initial Measurement. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .37
Language Selection ....................................................37
Display Read-out, one connected unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .38
Display Read-out, several connected units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .39
Display Keys ..........................................................39
9. Oxix® Menus 41
Converter Overview Menu ................................................41
Specify Main Screen ....................................................42
Datalogger ...........................................................44
Graph Display .........................................................46
Password .............................................................47
Sensor Name .........................................................49
Converter Setup ........................................................51
Averaging ............................................................52
Units ...............................................................52
mA Output ...........................................................53
Cleaning .............................................................54
High alarm ...........................................................56
Low alarm ...........................................................57
Sensor error ..........................................................58
Status ..............................................................59
Factory settings .......................................................60
Service Menu - Digest ..................................................61
Service Menu - Detailed .................................................62
Display Setup ..........................................................72
Language ............................................................73
Set clock ............................................................74
Modbus .............................................................75
Factory settings .......................................................77
Display SW version .....................................................77
10. Mechanical Dimensions 79
Sensor ..............................................................79
Converter and Display Unit ...............................................80
Immersion Fitting ......................................................81
11. Maintenance 83
Cleaning the sensor .....................................................83
Cleaning the converter display ............................................83
Functional Tests ........................................................83
Service Contract .......................................................83
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Appendix A. Pop-up and Error Messages 85
Appendix B. MJK-Field Link Software 89
Important Notes! ......................................................89
A. Connect a PC to the Oxix® ............................................89
B. Save Log Data .....................................................91
C. Upgrade Display Firmware ............................................91
D. Upgrade Converter Firmware ..........................................93
E. Install/Add Languages ................................................94
Appendix C. Front Panel Cut-out Drawing 95
Appendix D. Log Files 97
Appendix E. Input/Output Connections 101
Appendix F. Quick Guide - Oxix Calibration 102
Zero Point Calibration ..................................................103
Span Calibration ......................................................104
Salinity Correction Factor ...............................................105
Restore Factory Calibration .............................................106
Guide to Oxygen-free Solution for Checking Oxix D.O. Sensor Zero Point . . . . . . . . . .107
Main Menu Overview 108
Converter Setup Menu Overview 112
Service Menu Overview 120
Display Setup Menu Overview 126
Index Index-1
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1. Introduction
Thank you for choosing the MJK Oxix® Dissolved Oxygen Transmitter. We
have done our utmost to design and manufacture a quality transmitter that
satisfies your requirements:
• High performance optical sensor
• No calibration
• No spareparts needed in sensor's 10 year lifetime
• Air or water jet cleaning system is standard
• Measurements not affected by sunlight or dry environment
• Large, easy-to-read display with trend curve capability
• Multiple languages
• Built-in datalogger
• No moving parts, oxygen consumption or risk of poisoning
• Mounting accessories (optional)
The Oxix® transmitter is easy to install and put into service. However, read this
manual first to get familiar with the Oxix® transmitter and all its features.
The equipment must be handled and operated as instructed by the manufac-
turer, MJK Automation A/S to ensure stable operation and accurate measure-
ments.
You can always contact your local representative or the MJK hot lines for
advice and guidance:
Visit our web site at www.mjk.com to learn more about MJK Automation, our
other products and the people behind them.
Oxix® is a registered trademark of MJK Automation A/S, Denmark.
MJK Automation A/S is a Xylem Brand.
8GB Oxix Manual 1209 FW: 841013-009, 846001-002, 841513-009
Dissolved Oxygen Transmitter
About this Manual
This manual is divided into one table of contents, eleven chapters, five appen-
dices, four continuous menu overview flow charts and one index.
1. Introduction
Contains a presentation of the Oxix® Dissolved Oxygen Transmitter, the
structure of this manual, the operating principles and the top features.
2. Safety, Repair and Product Identification
Provide answers to issues regarding safety, mounting, repair,
restrictions and product identification.
3. Specifications and Order Numbers
The system specs and order numbers are listed for quick access.
4. Transmitter Installation
Contains installation guidelines for positioning of the transmitter in liquids,
distances to walls and other solid faces, and installation in tubes.
5. Sensor Calibration
The Oxix® sensor is factory calibrated and requires no re-calibration.
6. Converter
Describes the physical specifications and installation rules for the convert-
er such as power supply, in- and outputs, sensor/converter/
display configurations, etc.
7. System Configuration Examples
Illustrate how Oxix® Dissolved Oxygen Transmitter can be interconnected
with for example MJK MagFlux® flow meters in real-life scenarios.
8. Startup
Describes important checks and basic settings to get started including the
display and keyboard user interface.
9. Oxix® Menus
Contains a comprehensive description of the Oxix® menus, options and
utilities.
10. Mechanical Dimensions
Lists the Oxix® Dissolved Oxygen Transmitter dimensions.
11. Maintenance
Contains procedures for cleaning the sensor and the display.
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GB Oxix Manual 1209 FW: 841013-009, 846001-002, 841513-009
Appendix A. Pop-up Events / Error Messages
Lists possible pop-up messages, explains their meaning and offer
solutions to error conditions.
Appendix B. MJK-Field Link Software Upgrade
Describes in detail how to utilise the unique and intuitive MJK-Field Link
software program to upload new display and converter firmware
versions.
Appendix C. Front Panel Cut-out Drawing
A 1:1 scale drawing of the front panel outline and cut-out area for installa-
tion and mounting purposes.
Appendix D. Log Files
An example log file illustrates the format and explains the entries.
Appendix E. Digital Input/Output Connections
Illustrates how the digital in- and outputs can be interconnected.
* * * * *
Main Menu Overview
A continuous presentation of the top level menu structure.
Converter Setup Menu Overview
A continuous presentation of the converter setup menu structure.
Service Menu Overview
A continuous presentation of the service menu structure.
Display Setup Menu Overview
A continuous presentation of the display configuration menu structure.
10GB Oxix Manual 1209 FW: 841013-009, 846001-002, 841513-009
Dissolved Oxygen Transmitter
Operating Principles
The MJK Oxix® Dissolved Oxygen Transmitter is designed for measuring the
oxygen contents in open tanks exposed to sunlight, wells and closed contain-
ers.
The Oxix® sensor function is based on the fluorescence principle and does
not consume oxygen like membrane-type sensors. It is rugged and designed
to handle tough applications.
Light pulses with a wavelength of 475 nm are transmitted to a ruthenium
compound immobilized in a sol-gel matrix.
The ruthenium absorbs the light energy by changing the outer electron’s ener-
gy level. The unstable electron then collapses and returns back to its original
energy state and at the same time emits the surplus energy as a photon with
a wavelength of 600 nm. This process is also refered to as fluorescing.
When the intensity of the transmitted light pulses is tightly controlled, the
amount of fluorescing is predictable and repeatable.
If free oxygen molecules are present, the photon energy is absorbed by the
oxygen molecules without any light emission, and the amount of fluorescing is
consequently reduced (also refered to as fluorescence quenching).
It is therefore possible to determine the amount of dissolved oxygen by meas-
uring the amount of fluorescence quenching (light intensity).
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GB Oxix Manual 1209 FW: 841013-009, 846001-002, 841513-009
Features
Flexible Installation
MJK’s modular design allows up to 300 meters (950ft.) between the sensor
and the converter, and the Display Unit can be mounted up to 1000 m
(3000 ft.) from the signal converter with ordinary twisted wires.
ll
RS-
485
RS-
485
RS-
485
Max. 1000 m
1 pc. Oxix Converter
with display (206505) 3 pcs. Oxix without display (206508)
4 pcs. Oxix sensors (206510)
ll ll
300 m
Max.
One Display Unit can control up to four MagFlux® flow meters, SuSix® trans-
mitters and/or Oxix® transmitters for greater economy, space savings and an
improved overview of the multiple measurement values.
Simple to Operate
The Oxix® Display Unit has a mobile phone-like menu structure and can dis-
play text in several selectable languages.
PC Connection
Oxix® allows downloading setup configurations, uploading new instrument
software updates and display customization. The onboard data logger cap-
tures 20.000 readings which are displayed as an electronic graph and can be
retrieved as a CSV file on a PC. This connectivity is achieved with a common
USB port and the free MJK Field Link software.
12GB Oxix Manual 1209 FW: 841013-009, 846001-002, 841513-009
Dissolved Oxygen Transmitter
Flexible In- and Outputs
The Oxix® Transmitter has one 4-20 mA analogue output, two digital outputs
for alarms or control, and one digital input for resetting alarms, batches, etc.
User-definable Text
Up to five lines of text and readings can be configured by the user. The
graphic display is automatically adjusted to show the largest characters pos-
sible. Alarms can be displayed as pop-up alarms until they are reset.
Modbus® Communication
The Display Unit uses the Modbus® RTU communication protocol to con-
nect to the Oxix® Transmitter. The Transmitter can in turn connect to SCADA
systems with its Modbus® communication protocol.
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GB Oxix Manual 1209 FW: 841013-009, 846001-002, 841513-009
2. Safety, Repair and Product Identification
Safety Instructions
• Read this manual carefully.
• Pay attention to the environment on the installation site.
• Wear necessary protective equipment and follow all current safety regula-
tions.
• Oxix® can invoke a start signal for dangerous machinery. Always ensure
that connected machinery and other equipment are effectively put out
of service (that is to remove the main fuses and lock main and security
switches in off-position) before commencing configuration, fault finding,
servicing, maintenance work, etc.
• WARNING: There is a risk of lethal, electrical shock from the "Mains sup-
ply" terminals "N" and "L". Be careful not to touch these terminals when
the Oxix® front cover is removed.
• WARNING: Incorrect installation or use can lead to body injury and/or
material damage!
Physical Mounting
The Oxix® converter/display unit must not be mounted in explosion hazard-
ous areas!
Oxix® may only be installed and commissioned by authorized MJK personnel,
and all national and local regulations must be complied with.
Repair
Repair must only be made by authorized MJK personnel or by a service rep-
resentative approved by MJK.
Product Identification
A delivery will usually consist of an Oxix® sensor and an Oxix® converter with
or without a display unit.
Check that the item(s) delivered corresponds to the ordered item(s). The part
number is printed on an identification label stuck on the converter shipping
box and on a label on the converter itself.
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3. Specifications and Order Numbers
Specifications
Oxix® Transmitter
Accuracy +/- 0,1% of reading
Measuring input RS 485
Analog output One active 4 - 20 mA, galvanically isolated (max. load 800 W)
Digital outputs One voltage-free electromechanical relay (max. 50 V DC / 1 A)
One optically isolated MOSFET relay (max. 50 VAC / V DC / 120 mA)
Digital inputs One, max. 30 V DC, < 5 V DC = 0(low), > 10 V DC = 1(high),
pulse length > 100 ms
Communication MODBUS® RTU-mode, 9600 baud, 2-wire RS 485, slave-mode
Interface RS 485 for connection to Display Unit or PLC
Power supply 10 - 30 V DC, or 24 V AC, 50 / 60 Hz ± 10 % or
115 V AC, 50 / 60 Hz ± 10 % or
230 V AC, 50 / 60 Hz ± 10 %
Power consumption Max. 10 W
Cabinet material Polycarbonate, glass reinforced
Enclosure rating IP 67, NEMA 6
Temperature range - 20 … 60 °C
Weight 1,1 kg
CE approvals EN 61000-6-4:2001, EN 61000-6-2:2001
Display Unit
Enclosure rating Dust and waterproof IP 67, NEMA 6 (when mounted on converter)
Housing material Polycarbonate, glass reinforced
Protection lid Transparent polycarbonate
Display White backlit LCD-display (64 x 128 pixels) with softkeys
Indication Indication measurement, configuration and graph
Clock Real-time clock with built-in battery backup
Communication MODBUS® RTU-mode, 9600 baud, 2-wire RS 485, master-mode
Interface RS 485
Memory 2 Mb Flash memory, 160.000 entries with date, time and value
Interface USB 1,1 type mini B, Female
Temperature range - 20 … 60 °C
16GB Oxix Manual 1209 FW: 841013-009, 846001-002, 841513-009
Dissolved Oxygen Transmitter
Oxix® Sensor
Dissolved oxygen saturated 0 - 30.0 mg/l or ppm (parts per million)
0 - 120 %
Measurement principle Optical, near infra-red fluorescence (lin = 475 nm, Iout = 600 nm)
Sensor check Automatic self-diagnostics
Pressure 6 bar (100 psi)
Materials Boby and Head: PU, PVC, silicone, epoxy and stainless steel 316 SS
Optical lens: Sapphire
O-ring: Viton
Cable: PUR
Cleaning system
Built-in air or water jet
Water supply: 35-50 psi (2,3 - 3,4 Bar)
Air supply: 40-60 psi (2,7 - 4 Bar)
Cable 4 x 0,326 mm2, shielded, outer diameter Ø 5.0 mm (22 AWG)
Cable length 10 m (33 ft.), can be extended up to 600 mm
Response time t90 less than 1 second, t95 less than 60 second
Flow velocity No flow required
Power supply 12 V DC (10 -16 V DC), approx. 10 mA
Output RS 485, 9600 baud, 2-wire
Accuracy Better than 1% of actual reading (0,02 mg/l)
Resolution Better than 0,02 mg/l
Temperature range 0 - 60 ºC
Temperature compensation 0 - 50 ºC
Enclosure rating IP 68 to IEC 529 (10 m), NEMA 6
Dimensions 48.5 x 130 mm (diameter x length)
Mounting 1,5 inch NPT thread
0,25 inch NPT thread for jet spray cleaning tube
Weight 0,77 kg (1.7 lbs)
Approvals EN 61000-6-4:2001, EN 61000-6-2:2001
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GB Oxix Manual 1209 FW: 841013-009, 846001-002, 841513-009
Order Numbers
Oxix® Converters
206304 Oxix® Converter w/ display, 10 - 30 V DC
206305 Oxix® Converter w/ display, 230 / 115 V AC
206306 Oxix® Converter w/ display, 24 V AC
206307 Oxix® Converter without display, 10 - 30 V DC
206308 Oxix® Converter without display, 230 / 115 V AC
206309 Oxix® Converter without display, 24 V AC
Oxix® Sensor
206510 Oxix® Sensor
Accessories for Oxix® Sensors
155230 Oxix® Insertion adapter, 1½" NPT inner thread -> 2" RG outer thread
155236 Oxix® Immersion fitting
691120 Cable for Oxix® sensor (PUR)
155216 1½" NPT to 1¼" RG Adapter
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4. Sensor Installation
WARNING!
The Oxix® transmitter must not be powered until the transmitter is
correctly mounted and connected!
WARNING!
Connections to the Oxix® transmitter must not be disconnected while
the transmitter is powered.
Important!
To ensure safe and optimal functionality of the Oxix® transmitter,
the instructions below must be followed closely.
• The sensor must be mounted in a location where it is possible to perform
a representative dissolved oxygen sat. measurement.
• Fittings and mountings must be capable of carrying the sensor's weight
(0,77 kg / 1.7 lbs), and vibrations from for example pumps and other
equipment must be avoided.
• The system should be installed to facilitate access to the Oxix® transmitter
operator panel and sensor without risking personal injury during normal
operation, maintenance, cleaning of sensor, etc.
• The Oxix® transmitter must be connected to a mains outlet that complies
with national and local regulations.
• All cables must be installed, connected and mounted to minimize me-
chanical impact and electrical influence from other installations.
• The sensor cable’s maximum tensile load is adjusted to the sensor weight.
• The sensor is a electro-mechanical instrument. Be careful not to damage
the sensor lens. The accuracy will deteriorate if foreign material accumu-
lates on it, or it is subject to abrasive cleaning procedures. Only use a soft
cloth for cleaning. NEVER EVER a steel brush!
• All fuses are located on the Oxix® converter’s motherboard.
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Dissolved Oxygen Transmitter
Physical Sensor Installation
Preparation
Select a position that can produce a valid and representative measuring value
and provide sufficient space for physical cleaning of the sensor on a regular
basis.
Positioning the Sensor
The positioning of the sensor is very application dependant. There are, how-
ever, some "do"s and "don't"s that can be used as guidelines.
Do
• In aeration tanks or basins with significant fluctuation in depth the
sensor should be mounted on a foating device that keeps the sensor
submerged to a fixed depth from the surface.
• In tanks or basins with no or little fluctuation in depth the sensor may
be mounted in a fixed position approximately 1/4 below the surface.
• The optimal position at installations in flow-through aeration basins with
one measuring point is near the tank inlet.
• The optimal positions at installations in flow-through aeration basins
with two measuring points are near the tank inlet and the tank outlet.
Don't
• Do not position the sensor at or very close to the surface. Strong wind
aeration leads to increased dissolved oxygen concentration in the sur-
face layer which may not be representative.
• Do not use a fixed sensor position in aeration tanks/basins with signifi-
cant depth fluctuations. The dissolved oxygen saturation varies with
the depth.
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