Endress+Hauser Oxymax COS22 Series Operating Instructions Manual
Analog sensor for the measurement of dissolved oxygen
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- Brief operating instructions (20 pages) ,
- Operating instructions manual (36 pages)
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Summary of Contents for Endress+Hauser Oxymax COS22 Series
- Page 1 BA00446C/07/EN/04.15 Products Solutions Services 71306871 Operating Instructions Oxymax COS22 Analog sensor for the measurement of dissolved oxygen...
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Page 2: Table Of Contents
Sensor calibration ..... 20 Troubleshooting ....21 Endress+Hauser... -
Page 3: Document Information
This symbol alerts you to situations which may result in damage to property. Cause/situation Consequences of non-compliance (if applicable) ‣ Action/note Symbols Symbol Meaning Additional information, tips Permitted or recommended Not permitted or not recommended Reference to device documentation Reference to page Reference to graphic Result of a step Endress+Hauser... -
Page 4: Basic Safety Instructions
• The product has been tested for electromagnetic compatibility in accordance with the applicable European standards for industrial applications. • The electromagnetic compatibility indicated applies only to a product that has been connected in accordance with these Operating Instructions. Endress+Hauser... -
Page 5: Operational Safety
Product safety The product is designed to meet state-of-the-art safety requirements, has been tested, and left the factory in a condition in which it is safe to operate. The relevant regulations and European standards have been observed. Endress+Hauser... -
Page 6: Device Description, Function
• COS22-*1: 2 hours • COS22-*3: 12 hours After this time, even measurements close to the determination limit are useful. The necessary polarization time is reduced for sensors that were in use a short time before. Endress+Hauser... -
Page 7: Incoming Acceptance And Product
2. In the navigation area on the right-hand side, select "Check your device features" under "Device support". An additional window opens. 3. Enter the order code from the nameplate into the search field. You will receive information on each feature (selected option) of the order code. Endress+Hauser... -
Page 8: Scope Of Delivery
A test certificate 3.1 in accordance with EN10204 is supplied depending on the version (→ Product Configurator on the product page). EHEDG Compliance with EHEDG' s criteria for hygienic design • TÜV Rheinland, Apeldorn, Netherlands • Certificate type: Type EL Class I Endress+Hauser... -
Page 9: Installation
• Choose a mounting location that can be easily accessed at a later stage. • Ensure that upright posts and fittings are fully secured and vibration-free. • Select an installation location which produces a typical oxygen concentration for the individual application. Endress+Hauser... -
Page 10: Mounting The Sensor
Installation in suitable assembly is required (depending on the application) WARNING Electrical voltage In the event of a fault, non-grounded metallic assemblies may be under voltage and then are not touchable. ‣ When using metallic assemblies and installation equipment, observe the national grounding provisions. Endress+Hauser... -
Page 11: Installation Examples
The flow assembly CPA240 offers up to three installation spaces for sensors with a shaft diameter of 12 mm (0.47"), a shaft length of 120 mm (4.7"), and a Pg 13.5 process connection. It very well suited for use in pipelines or hose connections. To prevent Endress+Hauser... - Page 12 120 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 boiler feedwater. The flow comes from below. A0014081 6 Flow assembly Built-in sensor Drain Wall mount (clamp D29) Inflow Endress+Hauser...
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Page 13: Post-Installation Check
• Are the sensor and cable undamaged? • Is the orientation correct? • Is the sensor installed in an assembly and is not suspended from the cable? • Avoid the penetration of moisture by fitting the protective cap to the immersion assembly. Endress+Hauser... -
Page 14: Electrical Connection
(ends) which are loose or insufficiently secured. Post-connection check Device condition and specifications Notes Are the outside of the sensor, assembly, junction box, cable Visual inspection undamaged? Electrical connection Notes Are the installed cables strain-relieved and not twisted? Endress+Hauser... - Page 15 Are all the screws terminals properly tightened? Tighten Are all cable entries mounted, tightened and leak-tight? For lateral cable entries, make sure the cables loop downwards to allow water to Are all cable entries installed downwards or mounted laterally? drip off Endress+Hauser...
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Page 16: Calibration And Adjustment
5. Where necessary: Adjust the sensor. 6. Then insert the sensor into the medium. Make sure you comply with the instructions for calibration in the Operating Instructions of the transmitter. Endress+Hauser... -
Page 17: Calculation Example For The Calibration Value
350 (1150) 0.960 900 (2950) 0.900 1400 (4600) 0.849 1900 (6230) 0.801 400 (1320) 0.954 950 (3120) 0.895 1450 (4760) 0.844 1950 (6400) 0.796 450 (1480) 0.949 1000 (3300) 0.890 1500 (4920) 0.839 2000 (6560) 0.792 500 (1650) 0.943 Endress+Hauser... -
Page 18: Zero Point Calibration
If the sensor was operated in air, significantly more time must be factored in to also remove residual oxygen from any dead volume inherent to the design. Here a value of 2 hours applies as a general rule. Endress+Hauser... -
Page 19: Commissioning
3. Connect the sensor to the transmitter. 4. Switch on the transmitter. When the sensor is connected to the transmitter, the polarization takes place automatically after the power-up of the transmitter. 5. Wait for the polarization time to run out. Endress+Hauser... -
Page 20: Sensor Calibration
Otherwise, double the length of time to the next inspection. 3. Proceed as per Point 1 after two, four and/or eight months. In this way, you can determine the optimum calibration interval for your sensor. In any case, calibrate the sensor at least once a year. Endress+Hauser... -
Page 21: Troubleshooting
Check the cable connection. If the electrode. Is the transmitter display problem persists, send in the sensor. now at 0? Please observe the troubleshooting information in the Operating Instructions for the transmitter. If need be, carry out a test on the transmitter. Endress+Hauser... -
Page 22: Maintenance
1. Remove the sensor from the medium. 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 100 ± 2 % SAT. • Recalibration (if desired or required) Endress+Hauser... -
Page 23: Clean Sensor
Membrane is damaged or can no longer be cleaned (hole or overstretching) A0011868 9 COS22 Plug-in head O-ring 8.5 x 1.5 mm Glass portion with anode and cathode Thrust collar Membrane body Process seal 10.77 x 2.62 mm Sensor shaft Shaft sleeve Process connection Pg 13.5 Endress+Hauser... - Page 24 2. Remove all air bubbles from the electrolyte by tapping the side of the membrane body (using a pen or pencil, for example). 3. Hold the sensor vertically and carefully push the membrane body, filled with electrolyte, on the glass portion. Endress+Hauser...
- Page 25 6. Plug a new glass body (from the membrane kit) into the holder so that it fits. Ensure that you do not damage the electrical contact pins. 7. Fill the membrane body with electrolyte then screw the shaft sleeve back on. Endress+Hauser...
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Page 26: Accessories
Order No. 51505870 • Cable length 10 m (33 ft) Order No. 51505868 11.3 Zero-point gel COY8 Zero-point gel for oxygen sensors • Oxygen-depleting gel for test purposes • Product Configurator on the product page: www.endress.com/coy8 Technical Information TI01244C Endress+Hauser... -
Page 27: Maintenance Kit
Oxymax COS22 Accessories 11.4 Maintenance kit COS22Z • Service Kit, COS22 and COS22D • Ordering information: www.endress.com/cos22d under "Accessories/spare parts" Endress+Hauser... -
Page 28: Repair
The product must be returned if repairs or a factory calibration are required, or if the wrong product was ordered or delivered. As an ISO-certified company and also due to legal regulations, Endress+Hauser is obliged to follow certain procedures when handling any returned products that have been in contact with medium. -
Page 29: Technical Data
Corresponds to the recommended measured value resolution at the transmitter Maximum measured error COS22-*1 (standard sensor): ≤ ±1 % of measuring range + 10 ppb COS22-*3 (trace sensor): ≤ ±1 % of measuring range + 1 ppb at reference operating conditions Endress+Hauser... - Page 30 IP 68 (10 m (33 ft) head of water at 25 ˚C (77 ˚F) over 45 days, 1 mol/l KCl) Humidity 0 to 100%, not condensating in area of T-82 connection 13.4 Process Process temperature -5 to +135 °C (23 to 275 °F), non-freezing Process pressure Ambient pressure ... 12 bar (... 174 psi) absolute Endress+Hauser...
- Page 31 Molecular hydrogen causes false low readings and can, in a worst-case scenario, result in total failure of the sensor. CIP compatibility Yes (COS22-*1/3) SIP compatibility Yes, max. 140 °C (284 °F) (COS22-*1/3) Autoclavability Yes, max. 140 °C (284 °F), max. 30 min. (COS22-*1/3) Endress+Hauser...
- Page 32 VITON (FDA-compliant) Process seal for ATEX/FM/CSA/NEPSI/TIIS VITON (not FDA-compliant) Seals/O-rings VITON (FDA-compliant) Membrane body, sealing ring for shaft sleeve Perfluoroelastomer with USP88 Class VI Membrane Silicone (FDA-compliant, in compliance with USP87/88 class VI), PTFE, steel mesh Process connection Pg 13.5 Endress+Hauser...
- Page 33 Oxymax COS22 Technical data Surface roughness < 0.38 µm Temperature sensor NTC 22 kΩ Electrolyte COS22-*1 (standard sensor): Slightly alkaline electrolyte COS22-*3 (trace sensor): Neutral electrolyte Endress+Hauser...
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Page 34: Index
Return ........28 Incoming acceptance ......7 Endress+Hauser... - Page 35 Application ......18 Zero-point gel ......26 Endress+Hauser...
- Page 36 *71306871* 71306871 www.addresses.endress.com...
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