Endress+Hauser Memosens COS81E Technical specifications

Products Solutions Services
Brief Operating Instructions
Memosens COS81E
Hygienic, optical sensor with Memosens 2.0
technology for the measurement of oxygen
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
KA01484C/07/EN/02.21
71520968
2021-03-22

Memosens COS81E
2 Endress+Hauser
TAG No.: XXX000
Ser. No.: X000X000000
Order code 00X00-XXXX0XX0XXX
www.endress.com/deviceviewer Endress+Hauser Operations App
Serial number
A0023555

Memosens COS81E Table of contents
Endress+Hauser 3
Table of contents
1 About this document .............................................................. 3
1.1 Safety information ..................................................................... 3
1.2 Symbols used ......................................................................... 4
1.3 Additional documentation ................................................................ 4
2 Basic safety instructions .......................................................... 5
2.1 Requirements for personnel .............................................................. 5
2.2 Designated use ........................................................................ 5
2.3 Occupational safety ..................................................................... 5
2.4 Operational safety ......................................................................6
2.5 Product safety ......................................................................... 6
3 Installation ....................................................................... 6
3.1 Installation conditions ................................................................... 6
3.2 Mounting the sensor .................................................................... 9
3.3 Post-installation check .................................................................. 9
4 Electrical connection ............................................................ 10
4.1 Connecting the sensor .................................................................. 10
4.2 Ensuring the degree of protection ......................................................... 10
4.3 Post-connection check ..................................................................11
5 Commissioning .................................................................. 11
5.1 Function check ....................................................................... 11
1 About this document
1.1 Safety information
Structure of information Meaning
LDANGER
Causes (/consequences)
If necessary, 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)
If necessary, 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.

About this document Memosens COS81E
4 Endress+Hauser
Structure of information Meaning
LCAUTION
Causes (/consequences)
If necessary, 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
If necessary, Consequences of non-
compliance (if applicable)
‣Action/note
This symbol alerts you to situations which may result in damage to property.
1.2 Symbols used
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
1.2.1 Symbols on the device
Symbol Meaning
Reference to device documentation
1.3 Additional documentation
The following manuals which complement these Operating Instructions can be found on the
product pages on the Internet:
• Operating Instructions for the relevant sensor
• Technical Information for the relevant sensor
• Operating Instructions for the transmitter used
• Operating Instructions for the cable used
In addition to these Operating Instructions, an XA with "Safety instructions for electrical
apparatus in the hazardous area" is also included with sensors for use in the hazardous area.
‣Please follow instructions on use in the hazardous area carefully.

Memosens COS81E Basic safety instructions
Endress+Hauser 5
Safety instructions for electrical equipment in hazardous areas, Memosens 2.0 optical
oxygen:
• ATEX and IECEx: XA02238C
• INMETRO: XA02475C
• NEPSI: XA02476C
• JPN Ex: XA02485C
• CSA C/US: XA02520C
2 Basic safety instructions
2.1 Requirements for 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.
• Faults at the measuring point may only be rectified by authorized and specially trained
personnel.
Repairs not described in the Operating Instructions provided must be carried out only
directly at the manufacturer's site or by the service organization.
2.2 Designated use
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
• Regulations for explosion protection
Electromagnetic compatibility
• The product has been tested for electromagnetic compatibility in accordance with the
applicable international standards for industrial applications.
• The electromagnetic compatibility indicated applies only to a product that has been
connected in accordance with these Operating Instructions.