User manual EUTECH INSTRUMENTS CYBERSCAN PH 1500 PHION METER

[. . . ] Instruction Manual CyberScan pH 1500 Bench pH/mV Meter Technology Made Easy . . . 68X292327 Rev 0 12/02 PREFACE Thank you for selecting the Eutech Instruments CyberScan pH 1500 bench meter. The instruction manual serves to explain the use of the CyberScan pH 1500 bench meter as a step-by-step operational guide to help you familiarize with the meter's features and functions. It is structured sequentially with illustration of diagrams that explains the various functions and setup menus available. This manual is written to cover as many anticipated applications and uses of the CyberScan pH 1500 bench meter as possible. [. . . ] Continue to access other setup menu using or keys OR press std key to exit from the setup and return to Measure mode. std 31 Instruction Manual CyberScan pH1500 4. 1. 13 P13. 0 View mV offset This setup option allows you to view the standardized mV offset values. Access the View mV offset values menu from the REL mV Measure screen by pressing the setup key. A series of dashes "- - -" will be displayed if the unit has not been standardized mV View press to set value press enter to accept ELECTRODE 32 Instruction Manual CyberScan pH1500 4. 1. 14 P14. 0 Clear mV offset This setup option allows you to clear the standardized mV offset values. Access the Clear mV offset values menu from the REL mV Measure screen by pressing the setup key. Use the or key to scroll until the screen displays the Offset screen with the CLEAR icon along. Use the or key to scroll between YES or NO to clear the REL mV offset values. Press enter to confirm the selection. mV View clear press to set value press enter to accept 33 Instruction Manual CyberScan pH1500 5 PH OPERATION 5. 1 Standardization Because electrodes vary in their response, you must standardize or calibrate your pH meter and electrode to compensate for electrode variation. The more frequently you standardize or calibrate, the more accurate your measurements. The meter allows for automatic calibration with auto buffer recognition for up to 6 buffer values from choice of either 1 of the 3 buffer groups available or 6 custom pH buffer values selected from any of these 3 buffer groups (Depending on buffer selection). It is recommended that you perform at least 2 point calibration for optimum meter accuracy. Always rinse the electrode with tap or distilled water between different pH buffers to avoid carry-over. To delete a previous standardization (if performed earlier), refer to the Section 4. 1. 12 for details on how to clear pH buffer values. 34 Instruction Manual CyberScan pH1500 Press std key to begin standardization. Similarly pressing std key again at the Standardize mode exits and returns to the Measure mode. Press mode key to toggle between different modes until the pH Measure mode is displayed. Immerse the rinsed electrode(s) into a buffer from the selected buffer group. Stir moderately. This meter allows for automatic calibration using up to 6 buffers. 35 Instruction Manual CyberScan pH1500 A. Using Standard Buffer Group a. Press std key to access the standardize mode while you are in the pH Measure mode. Meter starts scanning the buffer from the already selected buffer group. Use or key to select desired buffer group and press enter key to confirm selection. BUFFER select 2 4 7 10 12 save view BUFFER select 1. 68 4. 01 6. 86 9. 18 12. 46 save view 13 6 8 10 13 BUFFER select c. The meter automatically scans and recognizes the pH buffer being standardized, it locks and displays the closest suitable pH buffer value on the screen. When the stable icon appears, the buffer value flashes on the screen, prompting if you wish to confirm the selection. The displayed buffer value flashes momentarily and the meter automatically accepts the calibration point. The first calibration point (pH offset) is successfully performed. d. e. If incorrect selection is made or the electrode condition does not meet the meter's criteria, an error message prompts you to troubleshoot or take remedial action. [. . . ] These two electrodes can be separated or they can be joined to create a combination electrode. The combination glass electrode makes a single connection to the pH meter which converts the electrodes millivolts output to pH unit, and displays the result. This meter can also use a field effect transistor (FET) electrode for measuring pH. This type of electrode employs an ion-sensitive solid state membrane as part of a transistor to measure the hydrogen ion concentration of a solution. [. . . ]