Endress+Hauser Oxymax COS22 Series Operating Instructions Manual Download Page 34

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Process connection . . . . . . . . . . . . . . . . . . . . . . .  31
Process pressure . . . . . . . . . . . . . . . . . . . . . . . . .  30
Process temperature . . . . . . . . . . . . . . . . . . . . . .  30
Product structure  . . . . . . . . . . . . . . . . . . . . . . . . .  6

Reference operating conditions . . . . . . . . . . . . . . 28
Repeatability . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Replacement

Electrolyte  . . . . . . . . . . . . . . . . . . . . . . . . . . .  22
Glass body  . . . . . . . . . . . . . . . . . . . . . . . . . . .  24
Membrane body . . . . . . . . . . . . . . . . . . . . . . .  22
Sealing ring. . . . . . . . . . . . . . . . . . . . . . . . . . .  22

Replacing the sealing ring . . . . . . . . . . . . . . . . . .  22
Response time. . . . . . . . . . . . . . . . . . . . . . . . . . .  28
Retractable assembly . . . . . . . . . . . . . . . . . . . . . .  12
Return  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5, 27

Scope of delivery. . . . . . . . . . . . . . . . . . . . . . . . . . 6
Sensor

Cleaning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Measuring principle . . . . . . . . . . . . . . . . . . . . 14

Sensor design . . . . . . . . . . . . . . . . . . . . . . . . . . .  14
Spare parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  27
Storage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  7
Storage temperature . . . . . . . . . . . . . . . . . . . . . .  29
Surface roughness . . . . . . . . . . . . . . . . . . . . . . . .  32

Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Environment  . . . . . . . . . . . . . . . . . . . . . . . . .  29
Input  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  28
Mechanical construction . . . . . . . . . . . . . . . . .  31
Performance characteristics. . . . . . . . . . . . . . .  28
Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  30

Temperature-pressure chart  . . . . . . . . . . . . . . . .  30
Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  7
Types of calibration . . . . . . . . . . . . . . . . . . . . . . .  15

Use. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Warning instructions. . . . . . . . . . . . . . . . . . . . . . .  2
Wear parts and consumables . . . . . . . . . . . . . . . .  21
Weight . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  31

Zero current . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

Summary of Contents for Oxymax COS22 Series

Page 1: ...BA446C 07 EN 01 11 71098071 Operating Instructions Oxymax COS22 Dissolved oxygen sensor...

Page 2: ...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 serio...

Page 3: ...ransmitter 13 4 2 Post connection check 13 5 Function 14 5 1 Measuring principle 14 5 2 Calibration 15 6 Commissioning 18 6 1 Function check 18 6 2 Polarization 18 6 3 Calibration 19 7 Maintenance 20...

Page 4: ...er 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...

Page 5: ...Local prevailing standards and regulations 1 4 Return If the sensor has to be repaired please return it cleaned to the sales center responsible Please use the original packaging if possible Before re...

Page 6: ...er filled cap for membrane protection Electrolyte 1 bottle 10 ml 0 34 fl oz Brief Operating Instructions Operating Instructions on CD If you have any questions please contact your supplier or your loc...

Page 7: ...ck 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 su...

Page 8: ...on instructions 3 3 1 Measuring system A complete measuring system comprises A digital oxygen sensor Oxymax COS22 A transmitter e g Liquisys COM223 253F An appropriate measuring cable e g COK21 Option...

Page 9: ...mbly with cleaning function 3 Install and connect the oxygen sensor NOTICE Installation errors Cable breakage loss of the sensor unintended unscrewing of the membrane cap Do not install the sensor sus...

Page 10: ...nner 3 4 2 Flow assembly CPA240 The CPA240 flow assembly offers up to three installation slots for sensors with a shaft diameter of 12 mm 0 47 a shaft length of 120 mm 4 72 and a process connection Pg...

Page 11: ...ers space for a 12 mm sensor with a length of 120 mm The assembly has a low sampling volume and with the 6 mm connections it is best suited for residual oxygen measurement in water treatments and boil...

Page 12: ...eral installation with permissible installation angle acc to sensor version 5 Down pipe impermissible NOTICE Incorrect measurements Sensor not in the medium all the way buildup overhead installation D...

Page 13: ...tion check a0005583 en Fig 7 Special measuring cable COK21 Instrument status and specifications Remarks Are the sensor assembly junction box or cable damaged Visual inspection Electrical connection Re...

Page 14: ...5 1 2 Sensor design 5 1 3 Polarization When the sensor is connected to the transmitter a fixed voltage is applied between the cathode and anode The polarization current this creates can be identified...

Page 15: ...n most applications single point calibration suffices in the presence of oxygen calibration of measured value at air The additional calibration of the zero point two point calibration improves the pre...

Page 16: ...to the first table the factor K acc to the second table T C F S mg l ppm T C F S mg l ppm T C F S mg l ppm T C F S mg l ppm 0 32 14 64 11 52 10 99 21 70 8 90 31 88 7 42 1 34 14 23 12 54 10 75 22 72 8...

Page 17: ...pressure as the measured value Thus the formula for calculation is C S Labs 200 660 0 977 750 2460 0 916 1250 4100 0 864 1750 5740 0 815 250 820 0 971 800 2620 0 911 1300 4270 0 859 1800 5910 0 810 3...

Page 18: ...id direct sunlight on the sensor Make sure you comply with the instructions for commissioning in the Operating Instructions of the transmitter The sensor has been tested at the factory for proper func...

Page 19: ...Check the sensor one month after its being put into operation by taking it out of the fluid drying it and then measuring the oxygen saturation index at air after 10 minutes Decide using the results a...

Page 20: ...tions e g power plant long cycles 1 2 year Greatly varying conditions e g daily CIP cleaning short cycles 1 month or shorter The following method helps you determine the necessary intervals 1 Inspect...

Page 21: ...ter 7 4 Wear parts and consumables Parts of the sensor are subject to wear during operation By taking suitable measures you can restore the normal operating function Type of soiling Cleaning Salt depo...

Page 22: ...3 or high concentrations of CO2 The theoretical operating time of an electrolyte filling for use in air saturated potable water pO2 210 mbar at 25 C 77 F is as follows COS22 1 standard sensor 1 5 year...

Page 23: ...d cathode 4 Remove the membrane body To do so use a suitable tool or carefully press it out of the shaft sleeve from the outside 5 Decide a Do you want to replace the membrane body and not use it agai...

Page 24: ...e 2 If the membrane body remains on the glass body and not in the shaft sleeve remove it from the glass body 3 Flush the glass body along with the anode and cathode using distilled water 4 Pull the us...

Page 25: ...9C 07 en Cleanfit CPA475 Retractable assembly for installation in tanks and pipework under sterile conditions Technical Information TI240C 07 en Unifit CPA442 Installation assembly for food biotechnol...

Page 26: ...zation complete Wait until polarization time ends Sensor calibrated Recalibrate Temperature display clearly too low Check sensor if necessary send sensor in for repair Membrane visibly stretched Repla...

Page 27: ...e transportation documents No repair without completed declaration 9 4 Disposal The device contains electronic components and must therefore be disposed of in accordance with regulations on the dispos...

Page 28: ...ditions 10 2 3 Signal current in air COS22 1 standard sensor 40 to 100 nA COS22 3 trace sensor 210 to 451 nA 10 2 4 Zero current COS22 1 standard sensor 0 1 of the current at air COS22 3 trace sensor...

Page 29: ...sary 10 2 10Polarization time COS22 1 standard sensor 30 min for 98 of the signal value 2 h for 100 COS22 3 trace sensor 3 h for 98 of the signal value 12 h for 100 10 2 11Oxygen depletion intrinsic c...

Page 30: ...Ingress protection IP 68 10 m 33 ft water column at 25 C 77 F during 45 days 1 mol l KCl 10 4 Process 10 4 1 Process temperature 5 to 135 C 23 to 175 F 10 4 2 Process pressure ambient pressure to 12...

Page 31: ...rs 10 4 6 Cross sensitivity Molecular hydrogen causes at least lesser findings and can cause total sensor failure 10 4 7 CIP compatibility Versions COS22 2 10 5 Mechanical construction 10 5 1 Weight D...

Page 32: ...ical data 32 Endress Hauser 10 5 4 Surface roughness Ra 0 38 m 10 5 5 Temperature sensor NTC 22 k 10 5 6 Electrolyte COS22 1 standard sensor alkalescent electrolyte COS22 3 trace sensor neutral electr...

Page 33: ...ation 10 I Immersion operation 10 Incoming acceptance 7 Ingress protection 30 Input 28 Installation 4 7 8 Angle of 7 Check 12 Examples 10 Flow operation 10 Immersion operation 10 Location 8 Measuring...

Page 34: ...28 Retractable assembly 12 Return 5 27 S Scope of delivery 6 Sensor Cleaning 21 Measuring principle 14 Sensor design 14 Spare parts 27 Storage 7 Storage temperature 29 Surface roughness 32 T Technical...

Page 35: ...ning Returned part cleaned with explosive oxidising dangerous for the environment biological risk radioactive Please tick should one of the above be applicable include safety data sheet and if necessa...

Page 36: ...BA446C 07 EN 01 11 FM9 71098071...

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