Xylem Oxix Dissolved User Manual

Dissolved Oxygen Transmitter

Dissolved Oxygen Transmitter

Installation and User Manual

1GB Oxix Manual 080915

FW: 841013-009, 846001-002, 841513-009

2GB Oxix Manual 080915

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 compat­ibility.

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

About this Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8

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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Dissolved Oxygen Transmitter

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

B. Save Log Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

C. Upgrade Display Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .91

D. Upgrade Converter Firmware . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .93

E. Install/Add Languages ................................................94

®

............................................89

Appendix C. Front Panel Cut-out Drawing 95

Appendix D. Log Files 97

Appendix E. Input/Output Connections 101

Main Menu Overview 102

Converter Setup Menu Overview 106

Service Menu Overview 114

Display Setup Menu Overview 120

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
ever, 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 manufac­turer, MJK Automation A/S to ensure stable operation and accurate measure­ments.

You can always contact your local representative or the MJK hot lines for
advice and guidance:

®

transmitter is easy to install, calibrate and put into service. How-

Europe• Tel.: [phone] E-mail: [e-mail]

Denmark• Tel.: [phone] E-mail: [e-mail]

Norway• Tel.: [phone] E-mail: [e-mail]

Sweden• Tel.: [phone] E-mail: [e-mail]

Holland• Tel.: [phone] E-mail: [e-mail]

USA• Tel.: [phone] E-mail: [e-mail]

Australia• Tel.: [phone] E-mail: [e-mail]

Visit our web sites at www.oxix.dk and 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.

8GB Oxix Manual 080915

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Dissolved Oxygen Transmitter

About this Manual

This manual is divided into one table of contents, eleven chapters, five appen­dices, four continuous menu overview flow charts and one index.

1. Introduction

Contains a presentation of the Oxix

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

utilities.

10. Mechanical Dimensions

Lists the Oxix

®

Dissolved Oxygen Transmitter dimensions.

11. Maintenance

Contains procedures for cleaning the sensor and the display.

®

Dissolved Oxygen Transmitter, the

®

menus, options and

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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.

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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 contain­ers.

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 ener­gy 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 meas­uring the amount of fluorescence quenching (light intensity).

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ll

RS­485

RS­485

RS­485

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.

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.

One Display Unit can control up to four MagFlux® flow meters, SuSix® trans­mitters 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 dis­play text in several selectable languages.

PC Connection

®

Oxix

allows downloading setup configurations, uploading new instrument
software updates and display customization. The onboard data logger cap­tures 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.

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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 pos­sible. Alarms can be displayed as pop-up alarms until they are reset.

Modbus® Communication

The Display Unit uses the Modbus® RTU communication protocol to con­nect to the Oxix® Transmitter. The Transmitter can in turn connect to SCADA
systems with its Modbus® communication protocol.

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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

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 hazard­ous areas!

Oxix® may only be installed and commissioned by authorized MJK personnel,
and all national and local regulations must be complied with.

®

front cover is removed.

Repair

Repair must only be made by authorized MJK personnel or by a service rep­resentative 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

Digital inputs

Communication MODBUS

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

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

One voltage-free electromechanical relay (max. 50 V DC / 1 A)
One optically isolated MOSFET relay (max. 50 VAC / V DC / 120 mA)

One, max. 30 V DC, < 5 V DC = 0(low), > 10 V DC = 1(high),
pulse length > 100 ms

®

RTU-mode, 9600 baud, 2-wire RS 485, slave-mode

115 V AC, 50 / 60 Hz ± 10 % or
230 V AC, 50 / 60 Hz ± 10 %

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

Interface RS 485

Memory 256 Kb Flash memory, 20.000 entries with date, time and value

Interface USB 1,1 type mini B, Female

Temperature range - 20 … 60 °C

®

RTU-mode, 9600 baud, 2-wire RS 485, master-mode

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Dissolved Oxygen Transmitter

Oxix® Sensor

Dissolved oxygen saturated

Measurement principle Optical, near infra-red fluorescence (l

Sensor check Automatic self-diagnostics

Pressure 6 bar (100 psi)

Materials Boby and Head: PU, PVC, silicone, epoxy and stainless steel 316 SS

Cleaning system Built-in air or water jet

Cable 4 x 0,326 mm

Cable length 10 m (33 ft.), can be extended up to 600 mm

Response time t

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 50 x 130 mm (diameter x length)

Mounting

Weight 0,77 kg (1.7 lbs)

0 - 30.0 mg/l or ppm (parts per million)
0 - 120 %

= 475 nm, I

in

Optical lens: Sapphire
O-ring: Viton
Cable: PUR

2

, shielded, outer diameter Ø 5.0 mm (22 AWG)

less than 1 second, t95 less than 60 second

90

1,5 inch NPT thread
0,25 inch NPT thread for jet spray cleaning tube

= 600 nm)

out

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Order Numbers

Oxix® Converters

®

206304 Oxix

206305 Oxix

206306 Oxix

206307 Oxix

206308 Oxix

206309 Oxix

Oxix® Sensor

206510 Oxix

Converter w/ display, 10 - 30 V DC

®

Converter w/ display, 230 / 115 V AC

®

Converter w/ display, 24 V AC

®

Converter without display, 10 - 30 V DC

®

Converter without display, 230 / 115 V AC

®

Converter without display, 24 V AC

®

Sensor

Accessories for Oxix

155230 Oxix

155236 Oxix

®

Sensors

®

Insertion adapter, 1½" NPT inner thread -> 2" RG outer thread

®

Immersion fitting

691120 Cable for Oxix

- 1½" NPT to 1¼" RG Adapter

®

sensor (PUR)

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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•
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 accumu­lates 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.

®

transmitter

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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, how­ever, 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 sur­face 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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5. Sensor Calibration

The Oxix® sensor is factory calibrated. No further calibration is required.

Zero-point Calibration Check

A zero-point calibration check may be carried out as described below.

Required materials

1 bucket•

1 measuring cup•

1 tablespoon•

Sodium sulfite (Na•

Procedure

1. Dissolve 3 tablespoons of sodium sulfite ( Na
container) containing 4 liters of clean tap water (1 US gallon, 0.9 UK
gallon).

2. Stir for about 1 minute.

3. Lower the sensor into the solution and let it rest at least half an hour.

4. Make sure that the sensor's measuring element is facing down, and no air
bubbles stick to the lense.

5. Check that the the Oxix

)

2SO3

®

readout is zero.

) in a bucket (or open

2SO3

2-point Calibration

2-point calibration is normally not required and is not recommended.

For very special applications it is possible to perform a 2-point calibration of
the Oxix
tive for further details.

®

transmitter. If required, contact an MJK sales or service representa-

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Mains
supply

-mA- -D02--D01--DI--Display-

+ +A B C2 N02C NO N01 PE N L

- -

C1

+DCGND A B

Red

Black

White

Green

Shield

521275

Line

2 wire

shielded cable.

4 wire

shielded cable.

display unit

display unit

Display unitConverter #4Converter #1

Max. four MJK converters with Modbus
can be connected to one display unit:

521274

2,5

Main supply

Supply Fuse

10-30 V DC 1 A T

24 V AC 500 mA T

115 V AC 125 mA T

230 V AC 63 mA T

Sensor supply

Fuse 200 mA T

6. Converter

Electrical Mounting

Warning!

The Oxix® converter/display unit must not be mounted in
explosion hazardous areas!

Loosen the four screws (positions indicated by arrows) and remove the dis­play unit to gain access to the terminals.

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Dissolved Oxygen Transmitter

Power Supply

The flow converter must be supplied from a properly fused mains outlet, a 24
volt AC outlet, or a 10 - 30 V DC power supply/battery.

Power Supply 230 V AC, 115 V AC or 24 V AC

Terminal Designation

PE Protective ground

N 230 / 115 / 24 V AC neutral

L 230 / 115 / 24 V AC live

Power Supply 10 - 30 V DC

Terminal Designation

PE Protective ground

— DC neutral

+ DC live

The internal fuse ratings are:

Internal Fuse Ratings

Voltage Rating Order no. Dimension

230 V AC 0.063 mA T 550030 5 x 20 mm

115 V AC 0.125 mA T 550035 5 x 20 mm

24 V AC 0.5 mAT 550049 5 x 20 mm

10 - 30 V DC 1.0 AT 550051 5 x 20 mm

The technical specifications for a 10 - 30 V DC power supply/battery are:

Technical Specifications for 10 - 30 V DC Power Supply

Power consumption without display < 5 W

Power consumption with display < 8 W

Peak start current @12 V DC,1 second Approx. 1,5 A

Peak start current @24 V DC,1 second Approx. 1 A

Display Connector

The display wires (and the remote display extension cable) are colour coded
as follows:

Display Connector

Wire colour Designation

Red + supply

White RS-485 A

Grey RS-485 B

Black - supply

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Changing the Power Supply Voltage 230/115 V AC

To change the input mains voltage from 230 V AC to 115 V AC (or vice versa)
proceed as follows:

1. Loosen the four screws on the front and lift out the display (see also page

23).

2. Note down the color and position of the wires in the terminal blocks, and
then loosen the terminal screws.

3. Unscrew the two screws that hold the metal cover and then remove it.

4. Unscrew the four screws that hold the mother PCB (the printed circuit
board with all the electrical components).

5. Remove the mother PCB and look at the back side.
This is what you should expect to see for a 230 V AC configuration:

230 V AC single jumper position

6. Unsolder and remove the jumper indicated by the arrow.

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Dissolved Oxygen Transmitter

7. See on the following picture where two jumpers must be inserted for a 115
V AC configuration:

115 V AC dual jumper positions

8. Insert and solder 2 jumpers (wires) in the positions indicated by the black
arrows.

9. Turn around the PCB and replace the 63 mAT fuse on the right side with a
125 mAT fuse ( or vice versa going from 115 VAC to 230 VAC).

10. Re-insert the PCB and re-assemble the converter (see also steps 4, 3, 2
and 1).

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Analogue Output

The analogue output is an active output with a maximum load of 800Ω.

Analogue Output

Terminal Designation

AO + 4-20 mA
AO

-

4-20 mA

The analogue output can be programmed for indication of primary units.

See details on page 53.

Digital Output

Oxix® has two digital outputs - DO1 with an opto (light triggered) relay and
DO2 with an electro-mechanical relay.

They can both be programmed for the following functions:

- Sensor error

- High and low alarms

Opto Relay

Terminal Designation

DO1 Com Max. 50 V DC /120 mA
DO1 NO

Electro-mechanical relay

Terminal Designation

DO2 Com Max. 50 V DC /1 A
DO2 NO

DO1 shares the common terminal (Com) with DI.

See also application examples in Appendix E. Digital Input/Output Connec­tions on page 101.

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Dissolved Oxygen Transmitter

Digital Input

Oxix® has one digital input which can be activated with a voltage higher than
10 V DC and de-activated with a voltage lower than 5 V DC.

Digital Input

Terminal Designation

DI Com
DI Max. 30 V DC

The digital input (DI) can be programmed for the following functions:

- start and pause cleaning function

- Solid curve

See also application examples in Appendix E. Digital Input/Output Connec­tions on page 101.

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Dissolved Oxygen Transmitter

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Mains
supply

-mA- -D02--D01--DI--Display-

+ +A B C2 N02C NO N01 PE N L

- -

C1

+DCGND A B

Red

Black

White

Green

Shield

521275

Line

2 wire

shielded cable.

4 wire

shielded cable.

display unit

display unit

Display unitConverter #4Converter #1

Max. four MJK converters with Modbus
can be connected to one display unit:

521274

2,5

Main supply

Supply Fuse

10-30 V DC 1 A T

24 V AC 500 mA T

115 V AC 125 mA T

230 V AC 63 mA T

Sensor supply

Fuse 200 mA T

Converter Terminals

Oxix® converter terminals

Flip the green label with "SuSix® / Oxix®" printed on it (see arrow) to the right
to gain access to the sensor connection terminals (see next page).

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Dissolved Oxygen Transmitter

Mains
supply

-mA- -D02--D01--DI--Display-

+ +A B C2 N02C NO N01 PE N L

- -

C1

Line

2 wire

shielded cable.

4 wire

shielded cable.

display unit

display unit

Display unitConverter #4Converter #1

Max. four MJK converters with Modbus
can be connected to one display unit:

521274

2,5

Main supply

Supply Fuse

10-30 V DC 1 A T

24 V AC 500 mA T

115 V AC 125 mA T

230 V AC 63 mA T

Sensor supply

Fuse 200 mA T

+DCGND A B

Red

Black

White

Green

Shield

521275

www.mjk.com

DK: [phone]
NO: [phone]
SE: [phone]
NL: [phone]
USA: [phone]
AUS: [phone]

Sensor and Mounting Kit / Connection Board Terminals

Important!: Make sure the right wiring indication label is fitted below
the terminal block (label indicated by arrow). The label
must clearly be marked Oxix®.

Wrong wiring may cause sensor destruction !

Connect the sensor wires to the Oxix® converter with the wires coming from
the sensor as shown below (see arrow).

Terminals

Wires from sensor Converter terminals

Oxix® converter terminals

- not used
Black GND

White A

Green B

Shield - (shield GND)

Red +DC