Endress+Hauser COA250 Operating Manual
Operating Instructions
Flowfit W COA250
Flow assembly for oxygen sensors
BA111C/07/en/02.07
51515479
Brief overview
Fig. 1: COA250 with Sensor
1 Sensor sleeve
2 Inlet (G¾ thread)
3 Outlet (G¾ thread)
4Union nut D50
5 Oxygen sensor (accessories, not in scope of delivery)
a0007313
Table of contents
1 Safety instructions . . . . . . . . . . . . . . . . 4
1.1 Designated use . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.2 Installation, commissioning and operation . . . . . . . . 4
1.3 Operational safety . . . . . . . . . . . . . . . . . . . . . . . . . . 4
1.4 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
1.5 Notes on safety icons and symbols . . . . . . . . . . . . . . 5
2 Identification . . . . . . . . . . . . . . . . . . . . 6
2.1 Nameplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.2 Product structure . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Scope of delivery . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3 Installation . . . . . . . . . . . . . . . . . . . . . . 7
3.1 Incoming acceptance, transport, storage . . . . . . . . . . 7
3.2 Installation conditions . . . . . . . . . . . . . . . . . . . . . . . 7
3.3 Installation instructions . . . . . . . . . . . . . . . . . . . . . . 9
3.4 Post-installation check . . . . . . . . . . . . . . . . . . . . . . 11
4 Commissioning. . . . . . . . . . . . . . . . . . 12
5 Maintenance. . . . . . . . . . . . . . . . . . . . 12
5.1 Cleaning the assembly . . . . . . . . . . . . . . . . . . . . . . 12
5.2 Cleaning the sensor . . . . . . . . . . . . . . . . . . . . . . . . 12
5.3 Cleaning agents . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
6 Accessories. . . . . . . . . . . . . . . . . . . . . 14
6.1 Accessories kits . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.2 Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
6.3 Cleaning systems . . . . . . . . . . . . . . . . . . . . . . . . . . 14
7 Trouble-shooting . . . . . . . . . . . . . . . . 15
7.1 Replacing damaged parts . . . . . . . . . . . . . . . . . . . . 15
7.2 Spare part kits . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
7.3 Return . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
7.4 Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
8 Technical data . . . . . . . . . . . . . . . . . . 17
8.1 Environment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
8.2 Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
8.3 Mechanical construction . . . . . . . . . . . . . . . . . . . . 17
Index . . . . . . . . . . . . . . . . . . . . . . . . . 18
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Safety instructions
1 Safety instructions
1.1 Designated use
The flow assembly has been designed for the installation of oxygen sensors with Ø 40 mm
(1.57 inch) in pipes and hoses. You can install the following sensors:
• COA250-A:
–COS41
–COS51D
–COS3 / 3HD
–COS4 / 4HD
• COA250-B:
–COS31
–COS61
Its mechanical design permits its use in pressurised systems (see "Technical data").
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 organization.
1.3 Operational safety
The assembly 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.
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Safety instructions
1.4 Return
If the assembly has to be repaired, please return it cleaned to the sales center responsible.
Please use the original packaging, if possible.
Please enclose the completed "Declaration of contamination" (copy the second last page of these
Operating Instructions) with the packaging and the transportation documents.
No repair without completed "Declaration of contamination"!
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.
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Identification
2 Identification
2.1 Nameplate
You can identify the assembly version by the order code on the nameplate. Please compare this code
with your order.
Flowfit COA250
order code:
serial no.:
spec.
pressure: PN=6bar(20°C) T=50°C
Fig. 2: Example of a nameplate
You can find possible assembly versions and the resulting order codes in the product structure.
COA250-A
C705F00G00
a0007304
2.2 Product structure
Version
A Short sensor sleeve for COS41 / 51D / 3 / 3HD / 3S / 4 / 4HD
B Long sensor sleeve for COS31 / 61
COA250- complete order code
2.3 Scope of delivery
The scope of delivery comprises:
• Flowfit assembly (ordered version)
• Operating Instructions (English)
If you have any questions, please contact your supplier or your sales center responsible.
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