Xylem WTW TriOxmatic 690 Operating Manual
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Xylem WTW TriOxmatic 690 Operating Manual

Xylem WTW TriOxmatic 690 Operating Manual

Dissolved oxygen sensor
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OPERATING MANUAL
ba25314e05 09/2020
®
TriOxmatic
690
DISSOLVED OXYGEN SENSOR

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Summary of Contents for Xylem WTW TriOxmatic 690

  • Page 1 OPERATING MANUAL ba25314e05 09/2020 ® TriOxmatic DISSOLVED OXYGEN SENSOR...
  • Page 2 ® TriOxmatic © 2020 Xylem Analytics Germany GmbH Copyright Printed in Germany.. ba25314e05 09/2020...

  • Page 3: Table Of Contents

    ® TriOxmatic Contents ® TriOxmatic 690 - Contents Overview ........5 ®...
  • Page 4 ® Contents TriOxmatic Maintenance equipment and replacement parts ..31 What to do if........32 Technical data .

  • Page 5: Overview

    ® TriOxmatic Overview Overview ® Structure of the TriOxmatic Fig. 1-1 Structure of the D. O. sensor Protective hood WP 600 membrane cap Electrode unit Shaft Electrode unit: Gold working electrode (cathode) Insulator Silver counter electrode (anode) Reference electrode Recommended fields of application Stationary measurements in water/wastewater applications.

  • Page 6: Safety

    ® Safety TriOxmatic Safety Safety information 2.1.1 Safety information in the operating manual This operating manual provides important information on the safe oper- ation of the product. Read this operating manual thoroughly and make yourself familiar with the product before putting it into operation or working with it.

  • Page 7: Safe Operation

    ® TriOxmatic Safety cleaning solutions). Safe operation 2.2.1 Authorized use ® The authorized use of the TriOxmatic 690 consists of its use as a sen- ® ® sor in the TriOxmatic 690.The authorized use of the TriOxmatic ® consists of its use as a sensor in the TriOxmatic 690.

  • Page 8: Commissioning

    ® Commissioning TriOxmatic Commissioning Scope of delivery ®  TriOxmatic The sensor is filled with electrolyte and provided with a protective hood and protective caps.  ZBK 600 accessory kit  Operating manual. Installation ® Connection to the The TriOxmatic 690 connection cable has a screw plug to be measuring transmitter connected to the Oxi input socket of a measuring transmitter.

  • Page 9: Measuring / Operation

    ® TriOxmatic Measuring / Operation Measuring / Operation Measuring WARNING Contact with the sample can lead to danger to the user! Depending on the type of sample, suitable protective measures must be taken (protective clothing, protective goggles, etc.). For measuring submerse the operable sensor in the test sample. The measured value is available immediately on submersing.

  • Page 10: Calibration In Water Vapor-Saturated Air

    ® Measuring / Operation TriOxmatic For calibration the membrane always has to be clean, for calibration in air it has to be dry. Clean contaminated sensors before calibration (see section 5.2 C LEANING THE SENSOR SHAFT AND MEMBRANE 4.2.2 Calibration in water vapor-saturated air If necessary, clean the sensor and membrane and dry the membrane (see section 5.2 C LEANING THE SENSOR SHAFT AND...

  • Page 11: Function Check

    ® TriOxmatic Measuring / Operation Function check The function check is the simplest way of letting you know whether the sensor needs to be cleaned and calibrated. The function check can either be performed in water vapor- saturated air or in air-saturated water. In the case of air temperatures under 5 °C we recommend to perform the function check not in air but in air-saturated water that has a higher temperature.
  • Page 12 ® Measuring / Operation TriOxmatic Required precision Measured value in air: 97 % saturation (nominal value: 100%)  No cleaning or recalibration is necessary as the measurement error lies within the range of precision required by the user. Measured values If the measured value lies outside the range of precision required by the outside the required user, clean the sensor shaft and membrane (see section 5.2) and...

  • Page 13: Maintenance, Cleaning, Disposal, And Replacement

    ® TriOxmatic Maintenance, cleaning, disposal, and replacement Maintenance, cleaning, disposal, and replacement General maintenance instructions WARNING Contact with the sample can lead to danger to the user! Depending on the type of sample, suitable protective measures must be taken (protective clothing, protective goggles, etc.). Cleaning the sensor shaft and membrane For normal operation (e.g.
  • Page 14 ® Maintenance, cleaning, disposal, and replacement TriOxmatic CAUTION Acetic acid irritates the eyes and the skin. When handling acetic acid, always wear protective gloves and protective goggles. Carefully clean the sensor shaft and membrane as specified in the C section. LEANING AGENTS NOTE Clean the membrane very carefully!
  • Page 15 ® TriOxmatic Maintenance, cleaning, disposal, and replacement Screw the protective hood back on again. If necessary, carefully dry the membrane with a lint-free paper towel. Calibrate the sensor (see section 4.2 C ALIBRATION ba25314e05 09/2020...

  • Page 16: Changing The Electrolyte And Membrane Cap

    ® Maintenance, cleaning, disposal, and replacement TriOxmatic Changing the electrolyte and membrane cap WTW delivers the sensor ready for operation. The electrolyte solution and membrane cap must only be replaced if:  a calibration error occurs due to a highly contaminated membrane ...
  • Page 17 ® TriOxmatic Maintenance, cleaning, disposal, and replacement The ELY/A electrolyte solution irritates eyes, skin and mucus membranes. If it comes into contact with the eyes, rinse thoroughly with water and consult a doctor! During working activities, always wear suitable protective gloves and protective goggles/face shield! Follow the safety datasheet.
  • Page 18 ® Maintenance, cleaning, disposal, and replacement TriOxmatic Thoroughly rinse the sensor head with electrolyte solution. Fill a new WP 600 membrane cap with ELY/A electrolyte solution (see section 5.8 M AINTENANCE EQUIPMENT AND REPLACEMENT PARTS Throw away the first filling and fill the membrane cap with electrolyte solution once more.
  • Page 19 ® TriOxmatic Maintenance, cleaning, disposal, and replacement Remove any air bubbles by carefully tapping the membrane cap. CAUTION The ELY/A electrolyte solution irritates eyes, skin and mucus membranes. If it comes into contact with the eyes, rinse thoroughly with water and consult a doctor! During working activities, always wear suitable protective gloves and protective goggles/face shield! Follow the safety datasheet.

  • Page 20: Cleaning The Electrodes

    ® Maintenance, cleaning, disposal, and replacement TriOxmatic Precision Recommendation: In order to carry out precision measurements, leave measurements the sensor to polarize for a longer period of time, e.g. overnight, and recalibrate it the following day. In the following cases, you must refill the sensor once more: ...
  • Page 21 ® TriOxmatic Maintenance, cleaning, disposal, and replacement Unscrew the protective hood from the sensor. CAUTION The ELY/A electrolyte solution irritates eyes, skin and mucus membranes. If it comes into contact with the eyes, rinse thoroughly with water and consult a doctor! During working activities, always wear suitable protective gloves and protective goggles/face shield! Follow the safety datasheet.

  • Page 22: Cleaning The Gold Working Electrode

    ® Maintenance, cleaning, disposal, and replacement TriOxmatic 5.4.1 Cleaning the gold working electrode Moisten the gold working electrode and the SF 300 polishing strip (see section 5.8 M AINTENANCE EQUIPMENT AND ) with deionized water. REPLACEMENT PARTS Using the rough side of the wet SF 300 polishing strip, polish off any contamination from the gold working electrode using light pressure.

  • Page 23: Cleaning The Silver Counter Electrode

    ® TriOxmatic Maintenance, cleaning, disposal, and replacement 5.4.2 Cleaning the silver counter electrode We recommend to clean the silver counter electrode with the RA 600 cleaning attachment that is available as an accessory (see section 5.8 M ). This prevents AINTENANCE EQUIPMENT AND REPLACEMENT PARTS the reference electrode from coming into contact with the cleaning solution.
  • Page 24 ® Maintenance, cleaning, disposal, and replacement TriOxmatic Remove the screw cap from the safety cap of the cleaning attachment. Fill the screw cap with RL-AG/Oxi cleaning solution (see section 5.8 M AINTENANCE EQUIPMENT AND REPLACEMENT PARTS Screw the sensor with the safety cap onto the screw cap. Leave the cleaning solution for a maximum of 1 hour to take effect.
  • Page 25 ® TriOxmatic Maintenance, cleaning, disposal, and replacement Unscrew the screw cap. Thoroughly rinse the electrode unit with the safety cap on with deionized water. Unscrew the safety cap. Rinse the sensor head and electrode unit several times with deionized water. ba25314e05 09/2020...
  • Page 26 ® Maintenance, cleaning, disposal, and replacement TriOxmatic Water the sensor head and electrode unit in deionized water for at least an hour. Carefully shake off the drops of water. Fill a new WP 600 membrane cap and screw it on (see section 5.3 C HANGING THE ELECTROLYTE AND MEMBRANE CAP Connect the sensor to the measuring transmitter again.
  • Page 27 ® TriOxmatic Maintenance, cleaning, disposal, and replacement Variant 2: Wipe the silver counter electrode with a lint free paper towel Cleaning the silver and carefully remove any loose deposits. counter electrode in a beaker Fill a beaker (150 ml, high-sided form) with approx. 25 ml RL- AG/Oxi cleaning solution.
  • Page 28 ® Maintenance, cleaning, disposal, and replacement TriOxmatic Leave the cleaning solution to work for 1 hour. Rinse the sensor head and electrode unit several times with deionized water. Water the sensor head and electrode unit in deionized water for at least an hour. Carefully shake off the drops of water.

  • Page 29: Checking The Sensor For Freedom From Zero-Current

    ® TriOxmatic Maintenance, cleaning, disposal, and replacement Fill a new WP 600 membrane cap and screw it on (see section 5.3 C HANGING THE ELECTROLYTE AND MEMBRANE CAP Connect the sensor to the measuring transmitter again. After approx. 60 minutes polarization time, the sensor is ready for operation.

  • Page 30: Storage

    ® Maintenance, cleaning, disposal, and replacement TriOxmatic Test criterion The sensor is OK if < 2 % oxygen saturation is displayed as the measured value. If the measured value is > 2 %:  Clean the gold working electrode (see section 5.4.1 C LEANING THE ) and change the electrolyte and GOLD WORKING ELECTRODE...

  • Page 31: Maintenance Equipment And Replacement Parts

    ® TriOxmatic Maintenance, cleaning, disposal, and replacement Maintenance equipment and replacement parts Description Model Order no. Accessory kit ZBK 600 202 620 (2 replacement membrane caps, 50 ml electrolyte solution, 50 ml cleaning solution, polishing film) Replacement membrane caps WP 600/2 202 850 (2 pieces) Electrolyte solution...

  • Page 32: What To Do If

    ® What to do if... TriOxmatic What to do if... The sensor is in the air Cause Remedy and the display shows – No electrolyte in the membrane – Change the WP 600 0.0 mg/l or 0% O membrane cap (see section 5.3) The sensor cannot be Cause...
  • Page 33 ® TriOxmatic What to do if... Cause Remedy – Sensor has not been calibrated – Clean the outside of the for a long time sensor, then recalibrate (section 5.2 and section 4.2) Measured value Cause Remedy fluctuating heavily – Membrane head loose –...

  • Page 34: Technical Data

    ® Technical data TriOxmatic Technical data General data Measuring principle Membrane-covered amperometric sensor with potentiostatically operated 3-electrode system Dimensions Weight (without sensor approx. 660 g connection cable) Membrane Material Fluorine plastic Thickness 50 µm Electrolyte ELY/A Temperature Via integrated NTC, - 5 °C ... + 60 °C measurement Accuracy ±...
  • Page 35 ® TriOxmatic Technical data Protection ring Cable gland V4A stainless steel 1.4571 Cable sheath Connection cable Length 1,5 m, 7 m, 15 m (special lengths on request) Diameter 8.6 mm Smallest allowed Permanent bend: 130 mm bend radius Short time bend: 80 mm Instrument safety Applicable norms –...

  • Page 36: Measurement Conditions

    ® Technical data TriOxmatic Measurement conditions Measuring range D. O. concentration 0.0 ... 60.0 mg/l D. O. saturation 0 ... 600 % ≈ 0 ... 1200 mbar pO Polarization time In the case of re-commissioning or change of At least electrolyte: 60 minutes In the case of short polarization interruptions...

  • Page 37: Characteristic Data On Delivery

    ® TriOxmatic Technical data Characteristic data on delivery Zero signal < 0.2 % of the saturation value Response time at 25 °C (90 % of the final value display) after: < 180 s Own consumption 0.0059 µg h (mg/l) at 20 °C Drift <...
  • Page 38 ® Technical data TriOxmatic ba25314e05 09/2020...
  • Page 40 For more information on how Xylem can help you, go to xyleminc.com. ® Service and Returns: Xylem Analytics Germany Sales GmbH &...

This manual is also suitable for:

201690

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