Endress+Hauser Oxymax COS22D User manual

BA00447C/07/EN/02.12
71153853
Operating Instructions
Oxymax COS22D
Dissolved oxygen sensor

Notes for using this manual
Warning instructions and their meaning
The structure, signal words and safety colors of the signs comply with the specifications of ANSI Z535.6
("Product safety information in product manuals, instructions and other collateral materials").
Cross reference symbols
Safety message structure Meaning
DANGER
!
Cause (/consequences)
Consequences if safety
message is not heeded
►Corrective action
This symbol alerts you to a dangerous situation.
Failure to avoid the situation will result in a fatal or serious injury.
WARNING
!
Cause (/consequences)
Consequences if safety
message is not heeded
►Corrective action
This symbol alerts you to a dangerous situation.
Failure to avoid the situation can result in a fatal or serious injury.
CAUTION
!
Cause (/consequences)
Consequences if safety
message is not heeded
►Corrective action
This symbol alerts you to a dangerous situation.
Failure to avoid this situation can result in minor or medium injury.
NOTICE
Cause/situation
Consequences if safety
message is not heeded
►Action/note
This symbol alerts you to situations that can result in damage to
property and equipment.
È ä 1 This symbol indicates a cross reference to a defined page (e.g. p. 1).
È å 2 This symbol indicates a cross reference to a defined figure (e.g. fig. 2).

Endress+Hauser
Oxymax COS22D
Table of contents
1 Safety instructions . . . . . . . . . . 4
1.1 Designated use . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Installation, commissioning and operation . 5
1.3 Operational safety . . . . . . . . . . . . . . . . . . . 5
2 Identification . . . . . . . . . . . . . . 6
2.1 Order code . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Scope of delivery . . . . . . . . . . . . . . . . . . . . 6
2.3 Certificates and approvals . . . . . . . . . . . . . . 6
3 Installation . . . . . . . . . . . . . . . . 9
3.1 Incoming acceptance, transport, storage . . . 9
3.2 Installation conditions . . . . . . . . . . . . . . . . 9
3.3 Installation instructions . . . . . . . . . . . . . . 10
3.4 Installation examples . . . . . . . . . . . . . . . . 11
3.5 Post-installation check . . . . . . . . . . . . . . . 14
4 Wiring . . . . . . . . . . . . . . . . . . 15
4.1 Sensor design for hazardous area applications
15
4.2 Connection to the transmitter . . . . . . . . . 17
4.3 Post-connection check . . . . . . . . . . . . . . . 17
5 Function . . . . . . . . . . . . . . . . . 18
5.1 Measuring principle . . . . . . . . . . . . . . . . . 18
5.2 Calibration . . . . . . . . . . . . . . . . . . . . . . . . 20
6 Commissioning. . . . . . . . . . . . 23
6.1 Function check . . . . . . . . . . . . . . . . . . . . 23
6.2 Polarization . . . . . . . . . . . . . . . . . . . . . . . 23
6.3 Calibration . . . . . . . . . . . . . . . . . . . . . . . . 24
7 Maintenance. . . . . . . . . . . . . . 25
7.1 Maintenance tasks . . . . . . . . . . . . . . . . . . 25
7.2 Maintenance intervals . . . . . . . . . . . . . . . 25
7.3 Cleaning the sensor . . . . . . . . . . . . . . . . . 26
7.4 Wear parts and consumables . . . . . . . . . . 26
8 Accessories. . . . . . . . . . . . . . . 30
8.1 Connection accessories . . . . . . . . . . . . . . 30
8.2 Installation accessories . . . . . . . . . . . . . . . 30
9 Trouble-shooting. . . . . . . . . . . 31
9.1 Trouble-shooting instructions . . . . . . . . . . 31
9.2 Spare parts and consumable material . . . . . 32
9.3 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
9.4 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . 32
10 Technical data . . . . . . . . . . . . . 33
10.1 Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
10.2 Performance characteristics . . . . . . . . . . . . 33
10.3 Environment . . . . . . . . . . . . . . . . . . . . . . 35
10.4 Process . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
10.5 Mechanical construction . . . . . . . . . . . . . . 37
Index. . . . . . . . . . . . . . . . . . . . 38

Safety instructions Oxymax COS22D
4Endress+Hauser
1 Safety instructions
1.1 Designated use
The oxygen sensor is suitable for continuous measurement of dissolved oxygen in water.
The specific suitability depends on the sensor design:
• COS22D-*1 (standard, measuring range 0.01 to 60 mg/l)
– Measuring, monitoring and regulating the oxygen content in fermenters
– Monitoring the oxygen content in biotechnology facilities
• COS22D-*3 (trace measurement, measuring range 0.001 to 10 mg/l, preferred operational range
0.001 to 2 mg/l), also suitable for high CO2partial pressure
– Monitoring inertization equipment in the food industry
– Monitoring the residual oxygen content in carbonated fluids of the beverage industry
– Trace measurement in industrial applications such as inertizations
– Monitoring the residual oxygen content in boiler feedwater
– Monitoring, measuring and regulating the oxygen content in chemical processes
NOTICE
Molecular hydrogen
Hydrogen causes sensitivity in other substances and leads to false low readings or, at the worst, total
failure of the sensor.
►Do not use the sensor in media containing hydrogen.
The COS22D sensor has to be connected with the CYK10 measuring cable for non-contact, digital data
transmission to the digital input of the Liquiline transmitter.
Any other use than the one described here compromises the safety of persons and the entire measuring
system and is not permitted.
The manufacturer is not liable for damage caused by improper or non-designated use.

Oxymax COS22D Safety instructions
Endress+Hauser 5
1.2 Installation, commissioning and operation
Please note the following items:
• Installation, commissioning, operation and maintenance of the measuring system must only be
carried out by trained technical personnel.
Trained personnel must be authorized for the specified activities by the system operator.
• Electrical connection must only be carried out by a certified electrician.
• Technical personnel must have read and understood these Operating Instructions and must adhere
to them.
• Before commissioning the entire measuring point, check all the connections. Ensure that electrical
cables and hose connections are not damaged.
• Do not operate damaged products and secure them against unintentional commissioning. Mark the
damaged product as being defective.
• Measuring point faults may only be rectified by authorized and specially trained personnel.
• If faults can not be rectified, the products must be taken out of service and secured against
unintentional commissioning.
• Repairs not described in these Operating Instructions may only be carried out at the manufacturer’s
or by the service organization.
1.3 Operational safety
The sensor has been designed and tested according to the state of the art and left the factory in perfect
functioning order.
Relevant regulations and European standards have been met.
As the user, you are responsible for complying with the following safety conditions:
• Installation instructions
• Local prevailing standards and regulations.

Identification Oxymax COS22D
6Endress+Hauser
2 Identification
2.1 Order code
To find out the version of your device, enter the order code indicated on the nameplate in the
search screen at the following address: www.products.endress.com/order-ident
2.2 Scope of delivery
The following items are included in the delivery:
• Oxygen sensor with tap water filled cap for membrane protection
• Electrolyte, 1 bottle, 10 ml (0.34 fl.oz.)
• Disassembly tool for membrane body
• Brief Operating Instructions
• Operating Instructions on USB card
If you have any questions, please contact your supplier or your local sales center.
2.3 Certificates and approvals
2.3.1 Ex approval
Version COS22D-BA
ATEX II 1G / IECEx Ex ia IIC T3/T4/T6 Ga
Notified body
DEKRA EXAM GmbH
Bochum (Germany)

Oxymax COS22D Identification
Endress+Hauser 7
a0014925
Fig. 1: EC declaration of conformity

Identification Oxymax COS22D
8Endress+Hauser
2.3.2 FDA conformity
The manufacturer declares the FDA compliance of the materials used.
Ask your local sales center for the certificates.
Note for Ex versions:
For use of these sensors in FDA applications, an additional FDA compliant sealing (e.g. CPA442) is
required in front of the process sealing to separate the process from the Ex zone.
Product FDA certificate for
22D-****22 Membrane, O-rings, process sealing
COS22Z-*2*2 Membrane, O-rings, process sealing
22D-****23 Membrane, O-rings
COS22Z-*2*3 Membrane, O-rings

Oxymax COS22D Installation
Endress+Hauser 9
3 Installation
3.1 Incoming acceptance, transport, storage
►Make sure the packaging is undamaged!
►Inform the supplier about any damage to the packaging.
Keep the damaged packaging until the matter has been settled.
►Make sure the contents are undamaged!
►Inform the supplier about damage to the contents. Keep the damaged products until the matter has
been settled.
►Check that the order is complete and agrees with your shipping documents.
►The packaging material used to store or to transport the product must provide shock protection and
humidity protection. The original packaging offers the best protection. Also, keep to the approved
ambient conditions (see "Technical data").
►If you have any questions, please contact your supplier or your local sales center.
3.2 Installation conditions
3.2.1 Angle of installation
3.2.2 Mounting location
• Select the installation location so that there is easy access for later calibration.
• Make sure that upright posts and assemblies are secured safely and vibration-free.
• Select an installation location which produces a typical oxygen concentration.
a0005584-en
Fig. 2: Permitted angle of installation
10° 10° Not permissible!
Not permissible!
Permissible angle of installation

Installation Oxymax COS22D
10 Endress+Hauser
3.3 Installation instructions
3.3.1 Measuring system
A complete measuring system comprises:
• A digital oxygen sensor Oxymax COS22D
• A transmitter, e.g. Liquiline CM42
• An measuring cable CYK10
• Optional: an assembly, e.g. fixed installation assembly CPA442, flow assembly CPA240 or retractable
assembly CPA475
a0001398
Fig. 3: Example of a measuring system with COS22D-*1
1 Liquiline M CM42
2 Measuring cable CYK10
3 Digital oxygen sensor Oxymax COS22D-*1
4 Fixed installation assembly CPA442
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2
3
4