Related Manuals for Endress+Hauser Oxymax COS51D
Summary of Contents for Endress+Hauser Oxymax COS51D
- Page 1 Operating Instructions Oxymax COS51D Digital sensor for dissolved oxygen With Memosens technology BA00413C/07/EN/13.12 71153927...
- Page 2 This symbol indicates a cross reference to a defined page (e.g. p. 1). È å 2 This symbol indicates a cross reference to a defined figure (e.g. fig. 2). Additional information, tips Permitted or recommended Forbidden or not recommended Endress+Hauser...
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Page 3: Table Of Contents
Oxymax COS51D Table of contents Basic safety instructions ... . 4 Trouble-shooting ....31 Requirements for personnel . -
Page 4: Basic Safety Instructions
Basic safety instructions Oxymax COS51D Basic safety instructions Requirements for personnel ► Installation, commissioning, operation and maintenance of the measuring system must only be carried out by trained technical personnel. ► The technical personnel must be authorized by the plant operator to carry out the specified activities. -
Page 5: Product Safety
Special safety instructions COS51D-G*8*0* • The certified oxygen sensor Oxymax COS51D-G*8*0* may only be connected via the measuring cable CYK10-G**1 to approved intrinsically safe digital sensor circuits of the transmitter Liquiline M CM42-*G*. The electrical connection instruction must be followed. -
Page 6: Identification
Identification Oxymax COS51D Identification Product page and configurator You can create a complete and valid order code by using the configurator on the internet product page. Product page link: www.products.endress.com/cos51d Order code You can choose from the following options on the product page located on the right: Click "Configure this product". -
Page 7: Certificates And Approvals
Oxymax COS51D Identification Certificates and approvals 2.4.1 ATEX II 1G/IECEx Ex ia IIC T6 Ga The inductive sensor-cable-plug-in system Memosens consisting of: • oxygen sensor Oxymax W COS51D-G*8*0 and • measuring cable CYK10-G**1 is suitable for the use in explosion-hazardous locations acc. to the type-examination certificate BVS 04 ATEX E 121 X . -
Page 8: Installation
Installation Oxymax COS51D Installation Incoming acceptance, transport, storage ► Make sure the packaging is undamaged! ► Inform the supplier about any damage to the packaging. Keep the damaged packaging until the matter has been settled. ► Make sure the contents are undamaged! ►... -
Page 9: Installation Instructions
3.3.1 Measuring system A complete measuring system comprises at least: • the digital oxygen sensor Oxymax COS51D • a transmitter, e.g. Liquiline CM42 • a special measuring cable, CYK10 • an assembly, e.g. immersion assembly CYA112 or retractable assembly COA451 Optional (see accessories): •... - Page 10 Installation Oxymax COS51D a0006735 Fig. 3: Measuring system (example) Digital oxygen sensor Oxymax W COS51D Retractable assembly COA451 Liquiline M CM42 Measuring cable CYK10 3.3.2 Installing a measuring point For immersed operation, install the individual modules away from the basin on a solid base.
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Page 11: Installation Examples
Oxymax COS51D Installation Installation examples 3.4.1 Immersion operation Upright post and chain assembly For large basins, where sufficient installation distance is required from the basin edge (aeration basin, especially), it is advisable to use the upright post and chain assembly. The free swinging of the immersed assembly practically rules out vibrations from the upright post. - Page 12 Installation Oxymax COS51D Upright post 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. If the flow is very strong, a second transverse pipe can be installed with its own pipe support.
- Page 13 Oxymax COS51D Installation Basin rim mounting with immersion assembly For fixing to the sides of the basin or channel, we recommend the pendulum holder of the immersion tube. Optionally, you can also use the assembly with a float. a0013693 Fig. 7:...
- Page 14 Installation Oxymax COS51D 3.4.2 Flow assembly The COA250 flow assembly with automatic self-venting is suitable for use in pipelines or hose connections. The inlet is at the bottom of the assembly, the outlet at the top (connection thread G¾). It can be installed in a pipe by using two 90˚ pipe brackets to allow inflow to the assembly (→...
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Page 15: Post-Installation Check
Oxymax COS51D Installation NOTICE Sensor not immersed into the medium, suspended particles settled on the sensor membrane or sensor optics, sensor installed overhead Measuring errors can occur ► Do not install the assembly at places, where air cushions or foam bubbles can be formed or where suspended particles can settle on the sensor membrane or optics (→... -
Page 16: Wiring
Wiring Oxymax COS51D Wiring WARNING Device is energized Improper connection can cause injury or death. ► The electrical connection must only be carried out by a certified electrician. ► Technical personnel must have read and understood the instructions in this manual and must adhere to them. -
Page 17: Direct Connection To The Transmitter
Oxymax COS51D Wiring Direct connection to the transmitter The sensor is connected to the transmitter via the measuring cable CYK10. a0003350 Fig. 13: Measuring cable CYK10 Post-connection check Instrument status and specifications Remarks Are the sensor, assembly, junction box or cable damaged? -
Page 18: Device Description
Device description Oxymax COS51D Device description Sensor design a0004149 Fig. 15: Sensor head, cutaway drawing Membrane Electrolyte Anode Reference electrode Threaded connection for protection basket Sealing ring Threaded connection for membrane cap Membrane cap a0006935 Fig. 14: Sensor design Memosens Plug-in head Threaded connection NPT ¾"... -
Page 19: Measuring Principle
Oxymax COS51D Device description Measuring principle 5.2.1 Polarization When the sensor is connected to the transmitter, a fixed external voltage is applied between the cathode and anode. The resulting polarization current is indicated on the display of the transmitter. The current starts high but then drops over time. The sensor can only be calibrated when the display is stable. -
Page 20: Calibration
Device description Oxymax COS51D 5.2.5 Memosens technology The sensor is connected to the cable connection (CYK10) without contact. The power and data are transferred inductively Once connected to the transmitter, the data saved in the sensor are read digitally. You can call up these data using the corresponding DIAG menu. - Page 21 Oxymax COS51D Device description Types of calibration: • Slope: – Air (saturated with water vapor, e.g. near the water surface) – Air-saturated water – Variable air (entering the current relative humidity and the absolute air pressure) – Data entry • Zero point: –...
- Page 22 Device description Oxymax COS51D 5.3.4 Calculation example for the calibration value As a check, you can calculate the expected calibration value (transmitter display) as shown in the following example (salinity is 0). Determine: – The ambient temperature for the sensor (air temperature for "air" calibration method,water temperature for "air-saturated water"...
- Page 23 Oxymax COS51D Device description Calculate the calibration value C: C = S Example • Air calibration at 18˚C (64 ˚F), altitude 500 m (1650 ft) above sea level, air pressure 1009 hPa (405 inH • S = 9.45 mg/l, K = 0.943, L = 0.996 Calibration value C = 8.88 mg/l.
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Page 24: Commissioning
Commissioning Oxymax COS51D 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 connection of the cleaning agent (e.g. water or air). -
Page 25: Automatic Cleaning
Oxymax COS51D Commissioning Automatic cleaning Compressed air is most suitable for cyclic cleaning. The cleaning unit is either ready supplied or can be retrofitted, and is attached to the sensor head. It operates at a capacity of 20-60 l/min. Optimum results are achieved with 2 bar (29 psi) and 60 l/min. -
Page 26: Maintenance
Maintenance Oxymax COS51D Maintenance Maintenance work must 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: •... -
Page 27: Replacing Wear And Tear Materials
Oxymax COS51D Maintenance 7.1.2 Cleaning the cathode The cathode only needs to be cleaned when it is visibly soiled or there is a coating of silver on it. To clean it, proceed as follows: Unscrew the membrane cap from the membrane body. - Page 28 Maintenance Oxymax COS51D Replacing the electrolyte: Remove the membrane cap. Replace the electrolyte and, if necessary, the membrane cap. Place the membrane cap back on the membrane body and screw the cap to the stop. 7.2.3 Replacing the membrane cap...
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Page 29: Accessories
Oxymax COS51D Accessories Accessories In the following sections, you find the accessories available at the time of issue of this documentation. For information on accessories that are not listed here, please contact your local service or sales center. Connection accessories CYK10 Memosens data cable •... -
Page 30: Cleaning
Accessories Oxymax COS51D Cleaning Pressurized air cleaning system for COSXX • Connection: 6/8 mm or 6.35 mm (¼") • Materials: POM/V4A • Order numbers – 6/8 mm: 71110801 – 6.35 mm (¼"): 71110802 Compressor • For cleaning system • 230 V AC order number: 71072583 •... -
Page 31: Trouble-Shooting
Oxymax COS51D Trouble-shooting Trouble-shooting Trouble-shooting 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 Coating on the membrane? Clean the sensor. -
Page 32: Sensor Checks
Trouble-shooting Oxymax COS51D Sensor checks Only authorised and trained personnel may test the sensor! You will also require a multimeter (voltage, resistance). Check Measure Setpoint Place the sensor in the air, and dry with a After 10 minutes: Slope inspection paper towel. -
Page 33: Spare Parts
The device must be returned if repairs or a factory calibration are required, or if the wrong device has been ordered or delivered. According to legal regulations, Endress+Hauser, as an ISO-certified company, is required to follow certain procedures when handling returned products that are in contact with medium. -
Page 34: Technical Data
Technical data Oxymax COS51D Technical data 10.1 Input Measured variable Dissolved oxygen [mg/l, μg/l, ppm, ppb, % SAT or hPa] Measuring range 0.01 to 100 mg/l 0.00 to 1000 % SAT 0 to 2000 hPa 10.2 Performance characteristics Response time •... -
Page 35: Environment
Oxymax COS51D Technical data 10.3 Environment Ambient temperature –5 to 50 ˚C (20 to 120 ˚F) range Storage temperature filled with electrolyte: –5 to 50 ˚C (20 to 120 ˚F) without electrolyte: –20 to 60 ˚C (0 to 140 ˚F) Ingress protection IP 68 (test conditions: 10 m (33 ft) water column at 25 ˚C (77 ˚F) in 30 days) -
Page 36: Ec Declaration Of Conformity
EC Declaration of Conformity Oxymax COS51D EC Declaration of Conformity a0014925 Endress+Hauser... -
Page 37: Index
Oxymax COS51D Index Accessories Immersion operation ......11 Assemblies........29 Incoming acceptance . - Page 38 Oxymax COS51D Reference operating conditions ..... 34 Repeatability ........34 Replacing Electrolyte .
- Page 39 Oxymax COS51D Endress+Hauser...
- Page 40 BA00413C/07/EN/13.12 FM10...
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