Xylem WTW DurOx 325 Operating Manual Download Page 5 | Manualshive

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Xylem WTW DurOx 325 Operating Manual Download Page 5

DurOx 325

Overview

5

ba25400e04

10/2020

1

Overview

Structure

Recommended

fields of

application

On site measurements in rivers, lakes and wastewater

1

Connection head

2

Shaft housing

3

Temperature sensor and auxiliary electrode

4

Ventilation area

5

Lead counter electrode (anode)

6

Insulator

7

Gold working electrode (cathode)

8

WP-D membrane cap (filled with electrolyte solution)

9

Protective hood

7

6

5

3

1

2

4

8

9

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Summary of Contents for WTW DurOx 325

Page 1: ...OPERATING MANUAL ba25400e04 10 2020 DurOx 325 DISSOLVED OXYGEN SENSOR OPERATING MANUAL ...

Page 2: ...DurOx 325 2 ba25400e04 10 2020 Copyright 2020 Xylem Analytics Germany GmbH Printed in Germany ...

Page 3: ...7 4 2 Measuring 7 4 3 Storage 7 5 Maintenance cleaning replacement 8 5 1 General maintenance notes 8 5 2 Outside cleaning 8 5 3 Changing the electrolyte and membrane cap 9 5 4 Cleaning the electrodes 11 5 5 Checking the sensor for freedom from zero current 13 5 6 Disposal 13 6 What to do if 14 7 Technical data 15 8 Wear parts and accessories 17 ...

Page 4: ...Contents DurOx 325 4 ba25400e04 10 2020 ...

Page 5: ...easurements in rivers lakes and wastewater 1 Connection head 2 Shaft housing 3 Temperature sensor and auxiliary electrode 4 Ventilation area 5 Lead counter electrode anode 6 Insulator 7 Gold working electrode cathode 8 WP D membrane cap filled with electrolyte solution 9 Protective hood 7 6 5 3 1 2 4 8 9 ...

Page 6: ...llowed precisely in order to avoid slight injuries or damage to the instrument or the environment 3 Commissioning Scope of delivery D O sensor DurOx 325 filled with electrolyte solution and ready to operate Calibration and storage vessel OxiCal D 1 exchange membrane cap WP D Electrolyte solution ELY G Cleaning solution RL G Polishing strip SF 300 Operating manual Note The membrane cap that is moun...

Page 7: ...easured is sufficient aeration tank water pipe stream Slowly pull the sensor through the water by hand lake container or Use a flow aid e g stirrer 4 3 Storage Always store the sensor in the calibration and storage vessel at a temperature in the range 0 50 C 32 122 F Make sure that the sponge in the calibration and storage vessel is always moist Calibration and storage vessel OxiCal D Moisten the ...

Page 8: ...nto contact with the skin rinse thoroughly with water and immediately change contaminated clothing If it comes into contact with the eyes rinse thoroughly with water and consult a doctor Note the safety datasheets CAUTION Before all maintenance activities disconnect the sensor from the instrument Note Information on how to order wear parts and maintenance equipment can be found in chapter 8 WEAR P...

Page 9: ... contaminated the membrane is damaged the electrolyte solution is exhausted Changing the electrolyte and membrane cap Unscrew the membrane cap Caution Electrolyte solution For disposal of the membrane head and electrolyte solution see section 5 6 Rinse the sensor head with deionized water Carefully rub and dry the counter electrode with a lint free paper towel Immerse the sensor head including the...

Page 10: ...ngertight using a paper towel Excess electrolyte solution is forced out of the ventilation area Check the filling Inspect the face surface No air bubbles may be present within the dashed circle Air bubbles outside this area do not interfere Note For measurements under high pressure the filling must be completely free of air bubbles Readiness to measure After approx 30 to 50 minutes the sensor is r...

Page 11: ...rane cap Caution Electrolyte solution For disposal of the membrane head and electrolyte solution see section 5 6 Rinse the sensor head with deionized water Using the rough side of the wet SF 300 polishing strip polish off any contamination from the gold working electrode using light pressure Caution Do not use any conventional sandpaper or glass fiber brushes Rinse the sensor head with deionized w...

Page 12: ...the membrane head Additionally you can prevent air bubbles by throwing the first filling away and refilling the membrane cap Rinse the sensor head with electrolyte solution Hold the sensor inclined and screw on the membrane head fingertight using a paper towel Excess electrolyte solution is forced out of the ventilation area Check the filling Inspect the face surface No air bubbles may be present ...

Page 13: ...est criterion The sensor is OK if the measuring instrument displays 1 D O saturation after 2 minutes 5 6 Disposal CAUTION The ELY G electrolyte solution irritates the eyes and skin When dealing with the ELY G electrolyte solution observe the following points During working activities always wear suitable protective gloves and protective goggles face shield If it comes into contact with the skin ri...

Page 14: ...nsor Replace and refill the membrane cap see section 5 3 Return the sensor The sensor cannot be calibrated Contaminated membrane head Electrolyte depleted Hole in the membrane Membrane cap not screwed on tight enough Replace and refill the membrane cap see section 5 3 Subsequently wait for 30 to 50 min and recalibrate Screw membrane head tighter The sensor still cannot be calibrated after changing...

Page 15: ...ectrode Lead Shaft housing Connection head Membrane head Cable screw joint POM Membrane FEP Sensor head Epoxy PEEK Insulator PEEK Thermistor housing VA steel 1 4571 Seals FPM Viton Connection cable Lengths 3 or 6 m Diameter 6 mm Smallest allowed bend radius Fixed installation 50 mm Flexible use 80 mm Plug type Socket 8 pins Pressure resistance Sensor IP 68 6 bar Sensor cable IP 68 2 bar Plug IP 67...

Page 16: ...racteristics when delivered Zero signal 1 of the saturation value Response time of D O measurement at 20 C 68 F t90 90 of the final value display after 25 s t95 95 of the final value display after 40 s t99 99 of the final value display after 125 s Own consumption of oxygen at 20 C 68 F 0 006 μg h 1 mg l 1 Drift Approx 3 per month in the operating condition Response time of temperature measurement ...

Page 17: ...f exchange membrane caps 3 pieces WP3 D 202 740 Electrolyte solution ELY G 205 217 Cleaning solution for lead counter electrode RL G 205 204 Polishing strip SF 300 203 680 Accessory kit comprising 3 exchange membrane caps WP D Electrolyte solution ELY G Cleaning solution RL G Polishing strip SF 300 ZBK D 201 578 Accessories Description Model Order no Calibration and storage vessel OxiCal D 201 579...

Page 18: ...Wear parts and accessories DurOx 325 18 ba25400e04 10 2020 ...

Page 19: ......

Page 20: ...buildings factories and farms In more than 150 countries we have strong long standing relationships with customers who know us for our powerful combination of leading product brands and applications expertise backed by a legacy of innovation Xylem Analytics Germany GmbH Dr Karl Slevogt Str 1 82362 Weilheim Germany Xylem Analytics Germany Sales GmbH Co KG WTW Dr Karl Slevogt Str 1 82362 Weilheim Ge...

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