Endress+Hauser Oxymax COS61D User manual

Products Solutions Services
Brief Operating Instructions
Oxymax COS61D
Optical sensor for measuring dissolved oxygen
With Memosens protocol
These Instructions are Brief Operating Instructions; they are
not a substitute for the Operating Instructions pertaining to
the device.
Detailed information on the device can be found in the
Operating Instructions and in the other documentation
available at:
• www.endress.com/device-viewer
• Smart phone/tablet: Endress+Hauser Operations App
KA01133C/07/EN/02.16
71341288

Oxymax COS61D
2 Endress+Hauser
TAG No.: XXX000
Ser. No.: X000X000000
Order code 00X00-XXXX0XX0XXX
www.endress.com/deviceviewer Endress+Hauser Operations App
Serial number
A0023555

Oxymax COS61D Table of contents
Endress+Hauser 3
Table of contents
1 Document information ............................................................ 4
1.1 Warnings ............................................................................ 4
1.2 Symbols ............................................................................. 4
2 Basic safety instructions .......................................................... 5
2.1 Requirements for the personnel ............................................................ 5
2.2 Designated use ........................................................................ 5
2.3 Occupational safety ..................................................................... 5
2.4 Operational safety ...................................................................... 6
2.5 Product safety ......................................................................... 6
3 Installation ....................................................................... 7
3.1 Installation conditions ................................................................... 7
3.2 Mounting the sensor .................................................................... 8
3.3 Installation examples .................................................................. 10
3.4 Post-installation check ................................................................. 15
4 Electrical connection ............................................................ 16
4.1 Connecting the sensor .................................................................. 16
4.2 Ensuring the degree of protection ......................................................... 16
4.3 Post-connection check ..................................................................16
5 Commissioning .................................................................. 18
5.1 Function check ....................................................................... 18
5.2 Sensor calibration ..................................................................... 18
5.3 Cleaning the sensor automatically ......................................................... 18

Document information Oxymax COS61D
4 Endress+Hauser
1 Document information
1.1 Warnings
Structure of information Meaning
LDANGER
Causes (/consequences)
Consequences of non-compliance (if
applicable)
‣Corrective action
This symbol alerts you to a dangerous situation.
Failure to avoid the dangerous situation will result in a fatal or serious injury.
LWARNING
Causes (/consequences)
Consequences of non-compliance (if
applicable)
‣Corrective action
This symbol alerts you to a dangerous situation.
Failure to avoid the dangerous situation can result in a fatal or serious injury.
LCAUTION
Causes (/consequences)
Consequences of non-compliance (if
applicable)
‣Corrective action
This symbol alerts you to a dangerous situation.
Failure to avoid this situation can result in minor or more serious injuries.
NOTICE
Cause/situation
Consequences of non-compliance (if
applicable)
‣Action/note
This symbol alerts you to situations which may result in damage to property.
1.2 Symbols
Symbol Meaning
Additional information, tips
Permitted or recommended
Not permitted or not recommended
Reference to device documentation
Reference to page
Reference to graphic
 Result of a step

Oxymax COS61D Basic safety instructions
Endress+Hauser 5
2 Basic safety instructions
2.1 Requirements for the personnel
• Installation, commissioning, operation and maintenance of the measuring system may be
carried out only by specially trained technical personnel.
• The technical personnel must be authorized by the plant operator to carry out the specified
activities.
• The electrical connection may be performed only by an electrical technician.
• The technical personnel must have read and understood these Operating Instructions and
must follow the instructions contained therein.
• Measuring point faults may be repaired only by authorized and specially trained personnel.
Repairs not described in the Operating Instructions provided may only be carried out
directly by the manufacturer or by the service organization.
2.2 Designated use
The oxygen sensor is suitable for continuous measurement of dissolved oxygen in water.
The main areas of application are:
• Wastewater treatment plants
– Oxygen measurement and regulation in the activated sludge basin for a highly efficient
biological cleaning process
– Monitoring the oxygen content in the wastewater treatment plant outlet
• Water monitoring
Oxygen measurement in rivers, lakes or seas as an indicator of the water quality
• Water treatment
Oxygen measurement for status monitoring, e.g. of drinking water (oxygen enrichment,
corrosion protection etc.)
• Fish farming
Oxygen measurement and regulation for optimum living and growth conditions
Use of the device for any purpose other than that described, poses a threat to the safety of
people and of the entire measuring system and is therefore not permitted.
The manufacturer is not liable for damage caused by improper or non-designated use.
2.3 Occupational safety
As the user, you are responsible for complying with the following safety conditions:
• Installation guidelines
• Local standards and regulations
Electromagnetic compatibility
• The product has been tested for electromagnetic compatibility in accordance with the
applicable European standards for industrial applications.
• The electromagnetic compatibility indicated applies only to a product that has been
connected in accordance with these Operating Instructions.

Basic safety instructions Oxymax COS61D
6 Endress+Hauser
2.4 Operational safety
1. Before commissioning the entire measuring point, verify that all connections are
correct. Ensure that electrical cables and hose connections are undamaged.
2. Do not operate damaged products, and safeguard them to ensure that they are not
operated inadvertently. Label the damaged product as defective.
3. If faults cannot be rectified:
Take the products out of operation and safeguard them to ensure that they are not
operated inadvertently.
NOTICE
Non-designated use
Incorrect measurements, malfunctions and even measuring point failure could result
‣Only use the product in accordance with the product specifications.
‣Pay particular attention to the technical data on the nameplate.
2.5 Product safety
The product is designed to meet state-of-the-art safety requirements, has been tested, and
left the factory in a condition in which it is safe to operate. The relevant regulations and
European standards have been observed.

Oxymax COS61D Installation
Endress+Hauser 7
3 Installation
3.1 Installation conditions
3.1.1 Orientation
45°
135°
45°
0° 180°
A0031951
 1 Angle of installation
Recommended angle of inclination
The sensor must be installed at an angle of inclination in an assembly, bracket or appropriate
process connection. Recommended angle: 45°, to prevent the formation of air bubbles. At
angles of inclination of 45 to 135°, air bubbles at the oxygen-sensitive membrane may
increase the measured value.
The sensor can be installed up to the horizontal in an assembly, support or suitable process
connection. The optimum installation angle is 45°.
Other angles and upside-down installation are not recommended. Reason: Possible sediment
formation and resulting falsification of measured value.
Observe the instructions for installing sensors in the Operating Instructions for the
assembly used.
3.1.2 Mounting location
• Choose a mounting location that can be easily accessed at a later stage.
• Ensure that upright posts and fittings are fully secured and vibration-free.
• Select an installation location which produces a typical oxygen concentration for the
individual application.

Installation Oxymax COS61D
8 Endress+Hauser
3.2 Mounting the sensor
3.2.1 Mounting the cleaning unit
If the cleaning unit is not supplied in a preassembled state:
1.
Unscrew the protection guard.
 Retain the protection guard for possible reuse at a later stage without the cleaning
unit.
2.
Carefully screw on the shaft sleeve as far as it will go.
 The cleaning nozzle should now be level with the spot.
1
2
1 Cleaning nozzle
2 Spot

Oxymax COS61D Installation
Endress+Hauser 9
3.
Connect the hose for the compressed air supply (to be provided onsite) or compressor to
the hose connection of the cleaning unit.
3.2.2 Installing a measuring point
Installation in suitable assembly is required (depending on the application)
LWARNING
Electrical voltage
In the event of a fault, non-grounded metallic assemblies may be under voltage and then are
not touchable.
‣When using metallic assemblies and installation equipment, observe the national
grounding provisions.
For immersion operation, install the individual modules away from the basin on a solid
base. Only carry out the final installation at the intended installation location. Select an
installation location that is easy to access.
For a complete installation of a measuring point, proceed as follows:
1. Install a retractable or a flow assembly (if used) into the process.
2. Connect the water supply to the rinse connections (if you use an assembly with cleaning
function).
3. Install and connect the oxygen sensor.
NOTICE
Installation error
Cable open circuit, loss of sensor due to cable separation, unscrewing of fluorescence cap
‣Do not install the sensor suspended from the cable.
‣Screw the sensor into the assembly so that the cable is not twisted.
‣When installing or uninstalling the sensor body, hold it tightly. Turn using only the
hexagonal nut on the armored coupling. Otherwise you might unscrew the fluorescence
cap. This will then remain in the assembly or process.
‣Avoid exerting excessive tensile force on the cable (e.g. from jerky pulling).
‣Select an installation location that is easy to access for later calibrations.
‣Observe the instructions for installing sensors in the Operating Instructions for the
assembly used.

Installation Oxymax COS61D
10 Endress+Hauser
3.3 Installation examples
3.3.1 Immersion operation
Universal holder and chain assembly
1
5
2
4
3
A0030564
 2 Chain holder on railing
1 Chain
2 Holder Flexdip CYH112
3 Rail
4 Sensor Oxymax
5 Wastewater assembly Flexdip CYA112
1 2
3
6
4
5
A0030565
 3 Chain holder on upright post
1 Weather protection cover CYY101
2 Controller / transmitter
3 Chain
4 Wastewater assembly Flexdip CYA112
5 Sensor Oxymax
6 Holder Flexdip CYH112

Oxymax COS61D Installation
Endress+Hauser 11
Universal holder and fixed immersion tube
12
3
4
5
A0030567
 4 Assembly holder with immersion tube
1 Protective cover
2 Controller / transmitter
3 Flexdip CYA112 immersion assembly
4 Sensor Oxymax
5 Assembly holder Flexdip CYH112

Installation Oxymax COS61D
12 Endress+Hauser
Basin rim mounting with immersion tube
12
3
4
A0030568
 5 Basin rim mounting
1 Pendulum holder CYH112
2 Assembly Flexdip CYA112
3 Assembly float
4 Sensor Oxymax

Oxymax COS61D Installation
Endress+Hauser 13
Float
The CYA112 float is for use in the case of large fluctuations in water level, for example in
rivers or lakes.
1
2
3
4
5
6
7
G1
800 (31.50)
500 (19.69) 220 (8.66)
Ø200 (7.87)
A0032159
 6 Dimensions in mm (inch)
1 Cable run with strain relief and rain shield
2 Fixing ring for rope and chains with terminal screw
3 Eyelets Ø15, 3 x 120 ° for anchoring
4 Plastic float, resistant to salt water
5 Pipe 40 x 1, stainless steel 1.4571
6 Bumper and ballast
7 Oxygen sensor

Installation Oxymax COS61D
14 Endress+Hauser
3.3.2 Flow assembly COA250
A0013319
 7 COA250
1
23
4
6
7
8
5
A0030570
 8 Bypass installation with manually actuated valves or
solenoid valves
1 Main pipe
2 Medium return
3 Oxygen sensor
4, 7 Manually actuated or solenoid valves
5 Flow assembly COA250-A
6 90 ° pipe elbow
8 Medium removal

Oxymax COS61D Installation
Endress+Hauser 15
3.3.3 Retractable assembly COA451
5
3
4
1
2
3
Detail A
Detail A, 90 ° r
A0030571
 9 Permissible and impermissible sensor installation positions with retractable assembly COA451
1 Ascending pipe, best position
2 Horizontal pipe, sensor top down, impermissible due to air cushion or foam bubble forming
3 Horizontal pipe, lateral installation with permissible installation angle (acc. to sensor version)
4 Down pipe, impermissible
NOTICE
Sensor not fully immersed in the medium, deposit on sensor membrane or sensor optics,
sensor installed upside down
Incorrect measurements are possible and these may affect the measuring point.
‣Do not install the assembly at points where air pockets or bubbles form or where
suspended particles may build up at the sensor membrane or sensor optics (item 2).
3.4 Post-installation check
• Are the sensor and cable undamaged?
• Is the orientation correct?
• Is the sensor installed in an assembly and is not suspended from the cable?
• Avoid the penetration of moisture by fitting the protective cap to the immersion assembly.

Electrical connection Oxymax COS61D
16 Endress+Hauser
4 Electrical connection
LWARNING
Device is live
Incorrect connection may result in injury or death
‣The electrical connection may be performed only by an electrical technician.
‣The electrical technician must have read and understood these Operating Instructions and
must follow the instructions contained therein.
‣Prior to commencing connection work, ensure that no voltage is present on any cable.
4.1 Connecting the sensor
Connection data
• Sensor cable connected directly to the terminal connector of the basic module
• Optional: Sensor cable plug connected to the M12 sensor socket on the underside of the
transmitter
With this type of connection, the transmitter is already wired at the factory.
GN
PK
GY
YE
COM A
COM B
U+
U–
 10 Sensor fixed cable with terminated cable cores
4.2 Ensuring the degree of protection
Only the mechanical and electrical connections which are described in these instructions and
which are necessary for the required, designated use, may be carried out on the device
delivered.
‣Exercise care when carrying out the work.
Otherwise, the individual types of protection (Ingress Protection (IP), electrical safety, EMC
interference immunity) agreed for this product can no longer be guaranteed due, for example,
to covers being left off or cable (ends) which are loose or insufficiently secured.
4.3 Post-connection check
Device condition and specifications Notes
Are the outside of the sensor, assembly, cable undamaged? Visual inspection
Electrical connection Notes
Are the installed cables strain-relieved and not twisted?
Is a sufficient length of the cable cores stripped, and is it positioned
in the terminal correctly?
Check the fit (by pulling gently)

Oxymax COS61D Electrical connection
Endress+Hauser 17
Device condition and specifications Notes
Are all the screws terminals properly tightened? Tighten
Are all cable entries mounted, tightened and leak-tight? For lateral cable entries, make sure the cables
loop downwards to allow water to drip off
Are all cable entries installed downwards or mounted laterally?

Commissioning Oxymax COS61D
18 Endress+Hauser
5 Commissioning
5.1 Function check
Before first commissioning, check if:
• the sensor is correctly installed
• the electrical connection is correct.
If using an assembly with automatic cleaning, check that the cleaning medium (e.g. water or
air) is connected correctly.
LWARNING
Escaping process medium
Risk of injury from high pressure, high temperatures or chemical hazards
‣Before applying compressed air to an assembly with cleaning facility, make sure the
connections are correctly fitted.
‣Do not install the assembly in the process if you cannot make the correct connection
reliably.
5.2 Sensor calibration
The sensor is calibrated at the factory. A new calibration is only needed in special situations.
5.3 Cleaning the sensor automatically
Compressed air is most suitable for cyclic cleaning. The cleaning unit is either provided or can
be retrofitted, and is attached to the sensor head. It operates at a capacity of 20-60 l/min.
Optimum results are achieved at 2 bar (29 psi) and 60 l/min.
The following settings are recommended for the cleaning unit:
Type of soiling Cleaning interval Cleaning duration
Media containing grease and oils 15 min 20 s
Biofilm 60 min 20 s

www.addresses.endress.com
*71341288*
71341288