User manual EUTECH INSTRUMENTS CYBERSCAN PC10 PHCONDUCTIVITY PORTABLE METER

[. . . ] This manual is written to cover as many anticipated applications and uses of the CyberScan DO 1500 bench meter as possible. If there are doubts in the use of the meter, please do not hesitate to contact the nearest Eutech Instruments' Authorised Distributors or call us at (65) 6778-6876 for Eutech Instruments' Customer Service Dept. Kindly remember to complete the warranty card and mail it back to your Authorised Distributors or Eutech Instruments Pte Ltd. Eutech Instruments reserve the rights to change, make improvement and modify specifications without prior notice and cannot accept any responsibility for damage or malfunction to the instrument caused by improper use. Copyright © 2003 Eutech Instruments Pte Ltd. [. . . ] Press enter to access the setup page. 15 Instruction Manual CyberScan DO 1500 3. Press enter to accept the current value or press adjust and set the value to be 1 or 2. or to 4. Press enter key to confirm selection and to go to next setup page OR press std to exit from this page without confirming the change mode. 16 Instruction Manual CyberScan DO 1500 4. 1. 5. Setup P5. 0: Enable/ Disable Auto Cal This setup option allows you to enable the auto calibration for % Sat and mg/L modes. % Sat press to set value press enter to accept To Enable/ Disable Auto Cal 1. Access the Setup measurement mode pages by pressing setup while in Press the or key in setup mode to access the Auto Cal setup page. Press enter to access the setup page. 17 Instruction Manual CyberScan DO 1500 3. Press enter key to confirm selection and to go to next setup page OR press std to exit from this page without confirming the change mode. 18 Instruction Manual CyberScan DO 1500 4. 1. 6. Setup P6. 0: Select the Temperature Unit press to set value press enter to accept select This setup option allows you to select unit of measure for Temperature either in °C or °F. Access the Setup pages menu from the measurement mode by pressing the setup key. Press the or key in setup mode to access the Select Temperature Unit setup page. Press enter to access the setup page. 19 Instruction Manual CyberScan DO 1500 3. 4. Press or key to select °C or °F. Press enter key to confirm selection and to go to next setup page OR press std to exit from this page without confirming the change mode. select select 20 Instruction Manual CyberScan DO 1500 4. 1. 7. Setup P7. 0: Enable/ Disable Stability Indicator This setup option allows you to set the stability indicator to be displayed on the screen whenever reading has stabilised, thus minimises guesswork. ST L AB E press to set value press enter to accept To Set Stability Indicator 1. Access the Setup pages menu from the measurement mode by pressing the setup key. After successful 0%Sat calibration, meter will prompt for the 100% Sat calibration. Upper display shows the present measured value, while lower display shows the 0. 0%Sat. Meter blinks the cal values for few seconds and prompts for the 100%Sat calibration. Upper display shows the present %Sat value and lower display shows the pressure compensated 100%Sat value. Remove the probe from the zero solution and wash it well in clean water. After the upper display reading stabilised, press enter to confirm the reading. Meter blinks the calibrated value for few seconds before it exit to measurement mode. Standardize Standardize % Sat % Sat press enter to accept press enter to accept 36 Instruction Manual CyberScan DO 1500 5. 3. %Sat ­ One Point calibration (Manual) User can calibrate to the know value. Meter blinks the cal values for few seconds before exit to measurement mode. Standardize % Sat ST L AB E press to set value press enter to accept 37 Instruction Manual CyberScan DO 1500 5. 4. mg/L­ One Point calibration (Auto) User can do calibration in mg/L. Upper display shows the present measured value while lower display shows theoretical value. Meter blinks the cal values for few seconds before exiting to measurement mode. Standardize mg/L ST L AB E press enter to accept 38 Instruction Manual CyberScan DO 1500 5. 5. mg/L­ One Point calibration (Manual) User can do calibration in mg/L. Lowest value that can be set is 2. 00mg/L; highest value is 60. 00 mg/L. [. . . ] In sample measurements, however, another factor influences the relationship among partial pressure, temperature, and dissolved oxygen. This is the factor of how much salt is contained or dissolved in the sample. The presence of dissolved salt lowers the sample's ability to dissolve oxygen. Therefore a sample with a high level of dissolved salt will contain less oxygen than a sample with less or no salt at the same temperature and pressure. [. . . ]