Related Manuals for Endress+Hauser Oxymax H COS21
Summary of Contents for Endress+Hauser Oxymax H COS21
- Page 1 Operating Instructions Oxymax H COS21 Dissolved oxygen sensor BA244C/07/en/09.06 71032330...
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Page 2: Safety Instructions
Safety instructions Oxymax H COS21 Safety instructions 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 •... -
Page 3: Notes On Safety Icons And Symbols
Oxymax H COS21 Installation 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. -
Page 4: Installation Conditions
Installation Oxymax H COS21 Installation conditions 2.2.1 Angle of installation Permissible angle of installation 10° 10° Not permissible! Not permissible! a0006654-en 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. - Page 5 Oxymax H COS21 Installation REL1 ALARM REL2 REL1 REL2 a0006653 Fig. 2: Measuring system (example) Oxygen sensor COS21 Retractable assembly CPA475 Special measuring cable COK21 Transmitter Liquisys M COM253 F 2.3.2 Installing a measuring point For a complete installation of a measuring point, proceed as follows: Install a retractable or a flow assembly (if used) into the process.
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Page 6: Post-Installation Check
Wiring Oxymax H COS21 Warning! When using metallic assemblies and installation equipment, comply with national grounding regulations. Post-installation check • Sensor and cable undamaged? • Cap undamaged? • Compliance with permissible sensor installation position? • Is the sensor installed in an assembly and is not suspended from the cable? •... -
Page 7: Post-Connection Check
Oxymax H COS21 Commissioning Post-connection check Instrument status and specifications Remarks Are the sensor, assembly, junction box or cable damaged? Visual inspection Electrical connection Remarks Are the installed cables strain-relieved and not twisted ? Is the cable type route completely isolated ? -
Page 8: Maintenance
Maintenance Oxymax H COS21 Switch-on the transmitter. If you connect the sensor to the transmitter, polarization is automatically performed after switching on the transmitter. Wait for the polarization time to end. " Caution! • When you remove the sensor from the medium, protect the sensor from strong sunlight. -
Page 9: Cleaning The Sensor
Oxymax H COS21 Maintenance 2. Clean and dry the membrane. 3. After about 10 minutes, measure the oxygen saturation index in air (without recalibration). 4. The measured value should be near to 102% SAT. • If necessary, replace a defective membrane or one which cannot be cleaned any more. - Page 10 Maintenance Oxymax H COS21 To replace the electrolyte, proceed as follows: Remove the membrane cap. Replace the electrolyte and, if necessary, the membrane cap. Place the membrane cap back on the sensor and screw the cap closed to the stop.
- Page 12 www.endress.com/worldwide BA244C/07/en/09.06 Printed in Germany / FM+SGML 6.0 / 71032330...
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