Endress+Hauser Oxymax H COS21 Operating Instructions Manual

Operating Instructions

Oxymax H COS21

Dissolved oxygen sensor

BA244C/07/en/09.06
71032330

Safety instructions Oxymax H COS21

1 Safety instructions

1.1 Designated use

The sensor is suitable for continuous measurement of dissolved oxygen in water.

Major applications:

• Process control in enzyme production

• Control of culture growth

• Biotechnological production

• Food industry

• General process applications

Any other use than the one described here compromises the safety of persons and the entire
measuring system and is, therefore, not permitted.
The manufacturer is not liable for damage caused by improper or non-designated use.

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.
The technical 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 for
correctness. 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 organisation.

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.

2 Endress+Haus er

Oxymax H COS21 Installation

1.4 Return

If the sensor has to be repaired, please return it cleaned to the sales centre responsible.
Please use the original packaging, if possible.

Please enclose the completed "Declaration of Hazardous Material and De-Contamination" (copy
the second last page of these Operating Instructions) with the packaging and the transportation
documents.

No repair without completed declaration!

1.5 Notes on safety icons and symbols

Warning!
This symbol alerts you to hazards. They can cause serious damage to the instrument

#

or to persons if ignored.

Caution!
This symbol alerts you to possible faults which could arise from incorrect operation.

"

They could cause damage to the instrument if ignored.

!

Note!
This symbol indicates important items of information.

2 Installation

2.1 Incoming acceptance, transport, storage

• Make sure the packaging is undamaged!
Inform the supplier about 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 delivery contents. Keep the damaged products until
the matter has been settled.

• Check that the scope of delivery is complete and agrees with your order and the 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 sales center responsible.

Endress+Hauser 3

Installation Oxymax H COS21

2.2 Installation conditions

2.2.1 Angle of installation

Permissible angle of installation

Not permissible!

Fig. 1: Permitted installation angle

The sensor must be installed with an angle of inclination of at least 10 ° to the horizontal in an
assembly, support or a suitable process connection. Other angles are not permissible. Do not
install the sensor overhead.

Note!

!

Make sure you comply with the instructions for installing sensors. You will find them in the
Operating Instructions for the assembly used.

2.2.2 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.

• For immersed operation in an activated sludge basin, select an installation location which
produces a typical oxygen concentration.

10° 10°

Not permissible!

2.3 Installation instructions

2.3.1 Measuring system

A complete measuring system comprises:

• Oxygen sensor COS21

• Transmitter, e.g. Liquisys M COM223/253 F

• Special measuring cable COK21

• Assembly, e.g. retractable assembly CPA475

a0006654-en

4 Endress+Haus er