Related Manuals for VWR DO-230
Summary of Contents for VWR DO-230
- Page 1 Instruction manual VWR ® DISSOLVED OXYGEN METER DO-230 EU Catalogue Number: 664-0236 Version: Issued: 1, December, 2020...
- Page 2 Legal Address of Manufacturer VWR International bv Researchpark Haasrode 2020 Geldenaaksebaan 464 B-3001 Leuven + 32 16 385011 www.vwr.com Country of origin: Poland...
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Page 3: Table Of Contents
CONTENTS Introduction 1. Package content 2. Exploitation notices 3. Characteristics of the meter 4. The outside view 5. The meter‘s maintenance 6. Switching the meter on and off 6.1. Stabilised reading 7. Preparation to work 7.1. Choosing the kind of the temperature compensation Oxygen concentration measurement 8. -
Page 5: Introduction
I. INTRODUCTION... -
Page 6: Package Content
- cooperation with Pt-1000 resistor temperature sensor; - signalising of the reading stabilisation; - storing measurement results with time and date; - real time clock with date; - automatic switch off after time set by the user. VWR Collection DO-230 dissolved oxygen meter instruction manual v1.0x... -
Page 7: The Outside View
- 3 - 4. THE OUTSIDE VIEW On the front wall of the meter there is a graphic LCD placed (Pic. 1), which displays the following measurement functions: - oxygen concentration measurement in % or mg/l; - temperature measurement. At the top of the LCD the current time and date are displayed. Choosing particular functions is described in the chapter 6.1. - Page 8 In the upper wall of the meter connectors are placed with the symbols given below: F - BNC-50 input for connecting the dissolved oxygen sensor; - Chinch input to connect the temperature probe; P - input for connecting the power adapter; Pic. 2. VWR Collection DO-230 dissolved oxygen meter instruction manual v1.0x...
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Page 9: The Meter's Maintenance
- 5 - 5. THE METER‘S MAINTENANCE The meter is equipped with a graphic touch screen. The maintenance consists in pressing particular keys and windows which appear on the screen. Grey captions in the windows and keys inform that these elements are not active in this particular operating mode. -
Page 10: Switching The Meter On And Off
(description in the chapter 15.3). This function is deactivated during calibration, while memorising results and connecting with a computer or power adapter. VWR Collection DO-230 dissolved oxygen meter instruction manual v1.0x... -
Page 11: Stabilised Reading
- 7 - 6.1. Stabilised reading The stabilised reading signalisation is active only for the reading marked with a frame. If the measured value meets the criterium of the stabilised reading, it is signalised by green colour of the frame and additionally with a sound if it has been activated. -
Page 12: Preparation To Work
After disconnecting the probe the meter enters the manual temperature compensation mode. Instead of the symbol the is displayed. In case of the manual temperature compensation the temperature value is set on the temperature measurement parameters screen. VWR Collection DO-230 dissolved oxygen meter instruction manual v1.0x... -
Page 13: Oxygen Concentration Measurement
- 9 - II. OXYGEN CONCENTRATION MEASUREMENT... -
Page 14: Basic Information About The Oxygen Measurement
(more than 2 months) requires removing the electrolyte. After this period the container must be filled with a fresh electrolyte and the sensor stored in distilled water for about 24 hours. VWR Collection DO-230 dissolved oxygen meter instruction manual v1.0x... - Page 15 - 11 - Accurate measurement result is determined by the condition of the membrane. The membrane must be free of any cracks (appearing of electrolyte-drops or white spots when dry). Before measurement the sensor should be activated by storing in distilled water for about 15 minutes. Strongly polluted wastewater after some time causes clogging of the membrane, which is recognised by inability to calibrate the device at 100% oxygen content (the calibration range becomes too narrow).
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Page 16: Entering The Oxygen Measurement Parameters
Marker next to the point value informs, that the last calibration was performed in this particular point. The calibration points values are fixed and cannot be changed. VWR Collection DO-230 dissolved oxygen meter instruction manual v1.0x... -
Page 17: Calibration Validity Time
- 13 - 9.3. Calibration validity time The meter stores the calibration validity time of the oxygen sensor. Termination of this time is signalised with yellow sensor number. To set the calibration validity time, press the window, the numerical keyboard VALIDITY will appear to enter the number of days and confirm with the button. - Page 18 48.58 14.26 31.76 49.22 14.91 32.40 49.87 15.56 33.05 50.63 16.22 33.70 Table 1. Determining the salinity in g/l NaCl on the basis of conductivity in mS/cm (at the temperature 25 VWR Collection DO-230 dissolved oxygen meter instruction manual v1.0x...
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Page 19: Atmospheric Pressure Influence Compensation
- 15 - 9.5. Atmospheric pressure influence compensation The concentration of oxygen saturated in water determined in mg/l depends directly on the atmospheric pressure value, which means that 10% pressure change causes also 10% oxygen saturation change. If the atmospheric pressure value differs significantly from 1013 hPa, it should be calculated into the measurement. -
Page 20: Calibration Of The Oxygen Sensor
The characteristic erase is signalised with red coulour of the sensor number on the screen. VWR Collection DO-230 dissolved oxygen meter instruction manual v1.0x... - Page 21 - 17 - To calibrate, follow the instructions: - enter the calibration mode: select the dissolved oxygen measurement on the measurement screen, press and hold the button until the background changes its colour to red, the meter enters the calibration mode and automatically changes the unit to % O (if the previous setting was to mg/l O...
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Page 22: Measurement Of Oxygen Concentration In Water
- for accurate measurement of oxygen concentration in mg/l enter the salinity value (section 9.4); - check or simulate the solution flow; - wait about 1 1.5 min until the reading stabilises (depending on sensor) and read the value. VWR Collection DO-230 dissolved oxygen meter instruction manual v1.0x... -
Page 23: Measurement With Manual Temperature Compensation
- 19 - 11.2. Measurement with manual temperature compensation Follow the instructions: - disconnect the temperature probe; - turn the meter on with the button; - choose the unit according to the section 9.1; - for accurate measurement of oxygen concentration in mg/l enter the salinity value (section 9.4);... -
Page 24: Measurement Of Oxygen Content In Air
(on the left) the %O Air symbol is displayed to differenciate it from the reading of percentage of the dissolved oxygen concentration in water. VWR Collection DO-230 dissolved oxygen meter instruction manual v1.0x... -
Page 25: Temperature Measurement
- 21 - III. TEMPERATURE MEASUREMENT... -
Page 26: Setting The Temperature Measurement Parameters
To enter this value, press the window, the numerical keyboard MANUAL TEMP. will appear to enter the value and confirm with the button. VWR Collection DO-230 dissolved oxygen meter instruction manual v1.0x... -
Page 27: Temperature Measurement
- 23 - 14. TEMPERATURE MEASUREMENT Follow the instructiions: - turn the meter on by pressing the button - connect the temperature probe to the Chinch connector, the symbol will appear on the screen; - immerse the temperature probe into the solution; - wait till the value stabilises and read the result. -
Page 28: Options
- 24 - IV. OPTIONS VWR Collection DO-230 dissolved oxygen meter instruction manual v1.0x... -
Page 29: Options Screen
- 25 - 15. OPTIONS SCREEN Enter the screen by pressing the button in the measurement OPTIONS screen. The screen contains the following tabs: OPTIONS - choose the stabilised reading signalisation mode; FUNCT. - viewing the memorised measurement results; MEM. - choose the language, set the economical mode, time and MISC. - Page 30 The automatic switch-off mode is active only while working with the rechargeable batteries. The function is deactivated for calibration, memorising results and work with the power adapter. Entering zero for the parameter deactivates this mode entirely. AUTO OFF VWR Collection DO-230 dissolved oxygen meter instruction manual v1.0x...
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Page 31: Info
- 27 - 15.3.2. Setting the brightness and lighting time The brightness settings are very important while working in the field. Choose one of five brightness modes. The table below shows the influence of the brightness settings to the meter‘s operating time (for NiMH rechargeable batteries with a capacity of 2000mAh). -
Page 32: Memorising Readings, Memory Readout
(Pic. 12). Before the readings collecting is started, the memory content may be deleted according to the next subchapter. Pic. 12 VWR Collection DO-230 dissolved oxygen meter instruction manual v1.0x... -
Page 33: Viewing And Deleting Readings
- 29 - 16.2. Viewing and deleting readings The stored readings may be viewed on the meter‘s screen. Follow the instructions: - on the measurement screen press the button and choose the tab on the options screen. A screen will appear with information about the memory usage and the buttons (Pic. -
Page 34: Power, Replacing The Rechargeable Batteries
This kind of failure is not repaired under the warranty conditions. Caution: application of batteries instead of rechargeable batteries when using the power adapter may result in fire and damage the meter. VWR Collection DO-230 dissolved oxygen meter instruction manual v1.0x... -
Page 35: Technical Data
- 31 - 18. TECHNICAL DATA OXYGEN MEASUREMENT IN WATER: range resolution accuracy* ±0.2 % 1 digit 0 ÷ 300.0 % 0.1 % ±0.02 mg/l 1 digit 0 ÷ 30.00 mg/l 0.01 mg/l *- accuracy of the oxygen sensor is given in its separate manual Temperature compensation range: 0.0 ÷... -
Page 36: Ordering Information
MS-OSG-1 Maintenance set for the DO sensor (set includes: 3 x spare membrane, 2 x 30 ml bottle of electrolyte, sand paper) 664-0238 TS-2B stainless steel temperature sensor 1meter cable 442-1264 EH-10 Electrode holder 662-2352 VWR Collection DO-230 dissolved oxygen meter instruction manual v1.0x... -
Page 37: Technical Service
The customer is responsible for applying for and obtaining the necessary regulatory approvals or other authorisations necessary to run or use the Product in its local environment. VWR will not be held liable for any related omission or for not obtaining the required approval or authorisation, unless... -
Page 38: Equipment Disposal
By doing so, you will help to conserve natural and environmental resources and you will ensure that your equipment is recycled in a manner that protects human health. Thank you VWR Collection DO-230 dissolved oxygen meter instruction manual v1.0x... - Page 39 - 35 - Your Distributor AUSTRIA HUNGARY POLAND VWR International GmbH VWR International Kft. VWR International Sp. z o.o. Graumanngasse 7 Simon László u. 4. Limbowa 5 1150 Vienna 4034 Debrecen 80-175 Gdansk Tel.: +43 01 97 002 0 Tel.: +36 (52) 521-130 Tel.: +48 058 32 38 200...