Dissolved oxygen sensor
Oxymax COS61

The concentration of oxygen dissolved in a liquid can be measured using the amperometric or optical measuring principles. This video shows what it is about and how these measuring principles work.

Optical oxygen sensor for water, wastewater and utilities

Oxymax COS61 is a high-performance oxygen sensor that offers fast, accurate and drift-free measurement. It supports your process with low maintenance, high availability and easy handling. The sensor's long-term stable fluorescence layer is exclusively oxygen-selective (interference-free), ensuring consistently reliable measurement.

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Benefits
Minimum maintenance, maximum availability
Fast, drift-free measurement for aeration control and process monitoring
Long-term stability for increased process safety
High-performing in all aeration processes (SBR, Anamox, etc.)
Chemical-free: no electrolyte...

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Minimum maintenance, maximum availability
Fast, drift-free measurement for aeration control and process monitoring
Long-term stability for increased process safety
High-performing in all aeration processes (SBR, Anamox, etc.)
Chemical-free: no electrolyte handling
Easy measuring point changeover to optical technology compatible with COS31 and COS41

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Field of application
Oxymax COS61 measures the dissolved oxygen concentration in:

Wastewater treatment plants:
- O₂control in the aeration basin
- Process water treatment and monitoring

Water works:
- Status monitoring of drinking water (oxygen enrichment, corrosion...

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Oxymax COS61 measures the dissolved oxygen concentration in:

Wastewater treatment plants:
- O₂control in the aeration basin
- Process water treatment and monitoring

Water works:
- Status monitoring of drinking water (oxygen enrichment, corrosion protection, etc.)
- Water quality monitoring in rivers, lakes or seas

Utilities of all industries:
- O₂ control in the biological treatment
- Process water treatment and monitoring

Fish farming:
- O₂ control for optimum growth conditions

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Features and specifications

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Details

Measuring principle

Sensor Oxygen
Application

Aeration tank, river monitoring, water treatment, fish farming.
Characteristic

Digital, optical (luminescence) dissolved oxygen measurement.
No flow needed - measurement possible in still water.
Measurement range

0mg/l ... 20mg/l
0%SAT ... 200%SAT
0 ... 400hPa
Measuring principle

Oxygen-sensitive molecules (marker) are integrated in an optical active layer (fluorescence layer). The fluorescence layer surface is in contact with the medium. The sensor optics are directed at the back of the fluorescence layer. The sensor optics transmit green light pulses to the fluorescence layer. The markers respond (fluoresce) with red light pulses. The duration and intensity of the response signals depend directly on the oxygen contents or partial pressure.
Design

- Calibration data saved in sensor.
High degree of EMC protection.
Material

Sensor body : stainless steel 1.4571Membrane cap : POM
Dimension

Diameter : 40mm
(1.56inch)Length : 220mm
(8.58inch)
Process temperature

-5°C ... 60°C
( 23 - 140°F)
Process pressure

max. 10bar
(145psi)
Temperature sensor

NTC temperature sensor, 0 to 50°C
(32 - 122°F)
Connection

Process connection: G1" thread
Cable connection : fixed cable or TOP68 plug-in-head.

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Documents / Manuals / Software

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Oxymax COS61D/COS61 Technical Information
Digital optical sensor based on the principle of fluorescence quenching,
with or without Memosens protocol

Technical Information (TI)
Operating Instructions COS61
Optical oxygen sensor

Operating Instruction (BA)
Brief Operating Instructions Oxymax COS61
Optical oxygen sensor

Short Instruction (KA)

08/12

English
Measuring technology for dissolved oxygen in aqueous media
For many organisms living in water, dissolved oxygen constitutes the
critical basis for their survival in the medium. This spectrumranges
from fish farming and monitoring the status of surface and river water
to the bacteria in a sewage treatment plant that clean the wastewater.

Publications (PU)

06/05

English
Przetwornik Liquiline M CM442- FE
Wieloparametrowy przetwornik Liquiline M CM442 obsługujący dowolne
czujniki w technologii Memosens.

Publications (PU)

04/12

Polish
OxyMax W
Product Code: COS61-
Declaration Number: EC_00151_02.16

EU Declaration

German , English , fr
OxyMax W
Product Code: COS31-, COS61-, COS71-, OOS31-, OOS71-
Declaration Number: EC_00151_01.16

EU Declaration

German , English , fr
Viomax, UV, Turbimax, TURBIDITY AND TOTAL SUSPENDED SOLIDS, TOCII, Stip-Scan, Stamolys, SPECTROMETER, OxyMax W, OxyMax H, New Analyzer Platform, Liquistation M, Liquiport, Isemax, Cell growth, Absorbance
Product Code: CAS40D-, CAS51D-, CAS74-, CAS80E-, CKF50-, CKI50-, COS22D-, COS31-, COS41-, COS51D-, COS61-, COS61D-, COS81D-, CSF48-, CSP44-, CUS50D-, CUS51D-, CUS52D-, CVF52-, CVI52-, OUSAF11-, OUSAF12-, OUSAF21-, OUSAF22-, OUSAF46-, OUSBT66-, OUSTF10-, CAM74-, CA71AL-, CA71AM-, CA71CL-, CA71COD-, CA71CR-, CA71CU-, CA71FE-, CA71HA-, CA71HY-, CA71MN-, CA71NO-, CA71PH-, CA71SI-, CA72TOC-, CA76NA-, CA80AL-, CA80AM-, CA80COD-, CA80CR-, CA80FE-, CA80HA-, CA80MN-, CA80NO-, CA80PH-, CA80SI-, CA80TN-, CA80TP-
Region/Country: Russia (Declaration of Conformity)
Approval Number: EAEC D-DE.AD07.B.01363/19

Miscellaneous

Russian
Viomax, UV, Turbimax, TURBIDITY AND TOTAL SUSPENDED SOLIDS, TOCII, Stip-Scan, Stamolys, SPECTROMETER, OxyMax W, OxyMax H, New Analyzer Platform, Liquistation M, Liquiport, Isemax, Cell growth, Absorbance
Product Code: CAM74-, CAS40D-, CAS51D-, CAS74-, CAS80E-, CKF50-, CKI50-, COS22D-, COS31-, COS41-, COS51D-, COS61-, COS61D-, COS81D-, CSF48-, CSP44-, CUS50D-, CUS51D-, CUS52D-, CVF52-, CVI52-, OUSAF11-, OUSAF12-, OUSAF22-, OUSAF46-, OUSBT66-, OUSTF10-, CA70SI-, CA71AL-, CA71AM-, CA71CL-, CA71CR-, CA71CU-, CA71FE-, CA71HA-, CA71HY-, CA71MN-, CA71NO-, CA71PH-, CA71SI-, CA72TOC-, CA76NA-, CA80AL-, CA80AM-, CA80COD-, CA80CR-, CA80FE-, CA80HA-, CA80MN-, CA80NO-, CA80PH-, CA80SI-, CA80TN-, CA80TP-
Approval Number: EAEC RU D-DE.AD07.B.01362/19

Miscellaneous

Russian
LIQUISYS M, OxyMax H, OxyMax W
Product Code: COS71-, COM253F-, COM253-, COM223-, COM223F-, COS61-, COS41-, COS31-, COS21-
Region/Country: Russia
Approval Agency: Rosstandart
Approval Number: OC.C.31.004.A_35505

Metrology

Russian

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Accessories / Spare parts

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Order code

Specification

70
- Nr 70 Order code 51518597
  
  Sealing set,Sensor COS61,COS61D,2 pieces
  
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80
- Nr 80 Order code 51518598
  
  Sensor cap, COS61,COS61D, 1 piece
  
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10
- Nr 10 Order code 51506820
  
  Measuring cable COK31-1.5
  
  1.5 m of length, ready made for sensors COS31, COS61 and COS71 with TOP68 connector.
  
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20
- Nr 20 Order code 51506821
  
  Measuring cable COK31-7
  
  7 m of length, ready made for sensors COS31, COS61 and COS71 with TOP68 connector.
  
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30
- Nr 30 Order code 51506822
  
  Measuring cable COK31-15
  
  15 m of length, ready made for sensors COS31, COS61 and COS71 with TOP68 connector.
  
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60
- Nr 60 Order code 51507038
  
  KIT COS31/71-S TOP68 plug unit
  
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- Order code 71110801
  
  Cleaning head COS61/61D, 6 or 8mm
  
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- Order code 71110802
  
  Cleaning head COS61/61D 1/4"
  
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90
- Nr 90 Order code 50053276
  
  Protective cage for COS31/41/51D/61/71
  
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- Order code 50081787
  
  COY 3-SK membrane protective basket
  
  for immersion of diss. oxygen sensors COS31/41/51D/61/61D in fish ponds.
  
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- Order code 51518599
  
  Calibration cap, COS31/41/61/51D/61D//71
  
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120
- Nr 120 Order code 50001054
  
  Junction box VS
  
  with socket and plug, type SXP Protection class: IP65.
  
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- Order code COY8-
  
  Zero-point gel COY8
  
  Zero point: Verification, calibration, adjustment at zero point of oxygen and disinfection sensors ::Amperometric and optical sensors ::12, 25 and 40mm diameter ::Application in the lab, in the field
  
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