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Summary of Contents for Endress+Hauser Oxymax W COS61
- Page 1 Operating Instructions Oxymax W COS61 Dissolved oxygen sensor BA387C/07/en/06.05 51518696...
- Page 2 If faults occur during operation, use the checklist to locate the cause. Æ Æ Index → ä 29 You can find important terms and keywords on the individual sections here. Use the keyword index to find the information you need quickly and efficiently. Endress+Hauser...
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Page 3: Table Of Contents
Oxymax W COS61 Table of contents Safety instructions ....4 Technical data ....27 Designated use . -
Page 4: Safety Instructions
Safety instructions Oxymax W COS61 Safety instructions Designated use The oxygen sensor is suitable for continuous measurement of dissolved oxygen in water. Typical applications are: • Measuring, monitoring and regulating the oxygen content in activated sludge basins. • Monitoring the oxygen content in the sewage treatment plant outlet. -
Page 5: Return
Oxymax W COS61 Safety instructions Return If the device requires repair, please send 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. -
Page 6: Identification
Identification Oxymax W COS61 Identification Product structure Certificate Version for non-hazardous area Cable length incl. extension cable Cable length: 1.5 m / 4.9 ft Cable length: 7 m / 23 ft Cable length: 15 m / 49 ft No cable (for replacement for TOP 68 version) -
Page 7: Installation
Oxymax W COS61 Installation Installation 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. -
Page 8: Installation Instructions
Installation Oxymax W COS61 3.2.2 Orientation The sensor can be installed up to the horizontal in an assembly, support or a suitable process connection. Other angles and overhead installation are not recommended. Reason: possible sediment formation and resulting falsification of measured value. - Page 9 Oxymax W COS61 Installation a0004102 Fig. 4: Measuring system (example) Immersion assembly CYA611 Junction box VS (optional) Transmitter Liquisys M COM253 Oxygen sensor COS61 3.3.2 Installing a measuring point Note! For immersed operation, install the individual modules away from the basin on a solid base. Only carry out the final installation at the intended installation location.
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Page 10: Installation Examples
Installation Oxymax W COS61 Installation examples 3.4.1 Immersion operation Universal assembly holder and chain assembly For large basins, where sufficient installation distance is required from the basin edge (activated sludge basin, especially), it is advisable to use the upright post and chain assembly (→ å 5, → å... - Page 11 Oxymax W COS61 Installation Universal assembly holder and fixed immersion assembly The preferable type of installation for strong or turbulent flow (> 0.5 m/s) in the basin or open channels is to secure the device to an upright post and a securely mounted immersion tube (→ å...
- Page 12 Installation Oxymax W COS61 Floating body To aid installation in strongly fluctuating water levels, e.g. in rivers or lakes, the floating body COA110-50 is available (→ å 10). Cable route with strain relief and rain protection mm/inch Mounting ring for ropes and chains with locking screw Lugs Ø15, 3 x 120 °...
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Page 13: Post-Installation Check
Oxymax W COS61 Installation 3.4.3 Retractable assembly The assembly is designed for installation on tanks and pipes. Suitable nozzles must be available for this. Install the assembly at places with constant flow. The minimum pipe diameter is DN 80 (3"). -
Page 14: Wiring
Wiring Oxymax W COS61 Wiring Warning! • The electrical connection must only be carried out by an electrical technician. • The electrical technician must have read and understood the instructions in this manual and must adhere to them. • Ensure that there is no voltage at the power cable before beginning the connection work. -
Page 15: Connection Via Junction Box
Oxymax W COS61 Wiring Connection via junction box To extend the sensor connection beyond the length of the fixed cable, the connection has to take place using a junction box VS (→ å 15, → å 16). Always connect the sensor cable to the junction box with the SXP connector. -
Page 16: Device Description
Device description Oxymax W COS61 Device description Sensor design a0004151 Fig. 17: Sensor design Sensor cable Sensor shaft O-ring Protection guard Threaded connection Detector Emitter diode Fluorescence cap The sensor consists of the following function units: • Sensor shaft • Sensor head with optics (emitter and detector) •... -
Page 17: Measuring Principle
Oxymax W COS61 Device description Measuring principle 5.2.1 Oxygen measurement based on the principle of fluorescence quenching • Sensor design: – Oxygen-sensitive molecules (markers) are integrated in an optically active layer (fluorescence layer). – The surface of the fluorescence layer is in contact with the medium. - Page 18 Device description Oxymax W COS61 5.3.1 Types of calibration Types of calibration: • Air (preferably saturated water vapor, e.g. near the water surface) – Measured values between 75 and 140 % SAT result in the calibration of the measured value at –...
- Page 19 Oxymax W COS61 Device description Determine: – the sensor temperature (air temperature for the calibration type "air", water temperature for the calibration type "air-saturated water") – the altitude above sea level – the current air pressure (=rel. air pressure to sea level) at the time of calibration. (If undeterminable, use 1013 hPa.)
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Page 20: Commissioning
Commissioning Oxymax W COS61 Commissioning Function check Before first commissioning, check if: • the sensor is correctly installed • the electrical connection is correct. If using an assembly with automatic cleaning, check the correct water connection at the assembly rinse connection. -
Page 21: Maintenance
Oxymax W COS61 Maintenance Maintenance Maintenance work must be carried out at regular intervals. To ensure that it is carried out, we recommend you enter the maintenance dates into an operations logbook or in an operations calendar in advance. The maintenance cycle primarily depends on the system, the installation conditions and the medium in which measurement is taking place. -
Page 22: Regenerating
Maintenance Oxymax W COS61 7.1.1 Cleaning the optics The optics only need to be cleaned if medium has penetrated through a defective fluorescence cap. To clean it, proceed as follows: Unscrew the protection guard and fluorescence cap from the sensor head. -
Page 23: Accessories
Oxymax W COS61 Accessories Accessories Connection accessories • Junction box VS with socket and 7-pole connector, for cable extension from the sensor (COS71, COS61, COS31, COS3 with SXP connector) to the transmitter, IP 65 degree of protection; Order No. 50001054 •... -
Page 24: Measuring, Monitoringand Cleaning
Accessories Oxymax W COS61 Measuring, monitoringand cleaning • Liquisys M COM223/253 Transmitter with integrated sensor function monitoring, measured value monitoring, free ® configuration of alarm contact, field or panel mounting, HART or PROFIBUS possible; Ordering acc. to product structure, see Technical Information TI199C/07/en •... -
Page 25: Troubleshooting
Oxymax W COS61 Troubleshooting Troubleshooting Troubleshooting instructions Problem Check Remedial action Mains voltage to the transmitter? Connect mains voltage. Sensor connected correctly? Set up correct connection. No display, no sensor Medium flow available? Create flow. reaction Buildup on the fluorescence cap? -
Page 26: Spare Parts
Troubleshooting Oxymax W COS61 Immerse the sensor into the water and wait a sufficient period of time (15 min. for oxygen depletion). The display drops to around 0 mg/l (0 %SAT). Depending on the conditions (contact surface water/air), the zero solution is stable for up to 12 hours. -
Page 27: Technical Data
Oxymax W COS61 Technical data Technical data 10.1 Input 10.1.1 Measured value Dissolved oxygen [mg/l, % SAT, hPa] Temperature [° C, ° F] 10.1.2 Measuring range with Liquisys M COM 223/253: 0 ... 20 mg/l (0 ... 20 ppm) 0 ... 200 % SAT 0 ... -
Page 28: Mechanical Construction
Technical data Oxymax W COS61 10.4.3 Repeatability ±0.5 % of end of measuring range 10.4.4 Operating life of sensor cap 1 year (protect against direct sunshine) 10.5 Mechanical construction 10.5.1 Weights For cable length 7 m (23 ft): 0.7 kg (1.5 lbs) For cable length 15 m (49 ft): 1.1 kg (2.4 lbs) -
Page 29: Index
Oxymax W COS61 Index Immersion tube ....... . . 11 Incoming acceptance . - Page 30 Oxymax W COS61 Regenerating ........22 Repeatability .
- Page 31 Declaration of Contamination Erklärung zur Kontamination Because of legal regulations and for the safety of our employees and operating equipment, we need the "declaration of contamination", with your signature, before your order can be handled. Please make absolutely sure to include it with the shipping documents, or - even better - attach it to the outside of the packaging.
- Page 32 www.endress.com/worldwide BA387C/07/en/06.05 Printed in Germany / FM+SGML 6.0 / DT 51518696...
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