User manual EUTECH INSTRUMENTS PH 5 PLUS

[. . . ] Instruction Manual pH 5+ pH/Temp pH 6+ pH/mV/Temp Ion 6+ pH/Ion/mV/Temp Technology Made Easy . . . 68X243633 Rev 1 12/08 Part of Thermo Fisher Scientific Preface This instruction manual serves to explain the use of the pH 5+, pH 6+ and Ion 6+ meters. It functions in two ways: first as a step by step guide to help you operate the meter; second, it serves as a handy reference guide. This manual is written to cover as many anticipated applications of the pH 5+, pH6+ and Ion 6+ meters as possible. If there are doubts in the use of this meter, please do not hesitate to contact the nearest Eutech Instruments Authorized Distributor. [. . . ] The display shows "bUF" blinking. 2. Press ENTER key to begin buffer group selection mode. Use the MODE key to toggle between USA, NIST or Pb as shown below. -8- Instruction Manual pH 5+, pH 6+, Ion 6+ Press ENTER key to confirm your selection. The meter will automatically revert to pH measurement mode. The meter will save the selected group indefinitely until changed. 3. 1. 3 Resetting User Calibrated Values The calibrated pH/mV/Ion values can be reset to factory default using the procedure below. Temperature offset will not be reset using this procedure. To abort press CAL to revert to measurement mode. Press and hold CAL while switching the meter on using the ON/OFF key. Turn on the meter and select ion mode by pressing MODE key if necessary. For best results, always begin with your lowest standard value, followed by the next lowest standard. Dip the ISE into your standard solution. Press CAL key to begin calibration mode. The display shows "CA" (to indicate calibration mode) momentarily followed by "0. 1" flashing. To select the appropriate standard, use and keys. -10- Instruction Manual pH 5+, pH 6+, Ion 6+ 3. Press ENTER to confirm that the ppm value is the desired standard. The displayed value now shows the corresponding mV reading for the selected ppm value selected. When the mV reading is stable, press ENTER to complete the 1 point calibration. The display will show the next highest calibration standard value. Dip the electrode into your next highest standard solution. Press CAL key to begin calibration mode. Press ENTER to confirm that the ppm value is the desired standard. The displayed value now shows the corresponding mV reading for the selected ppm value selected. [. . . ] Ensure correct pH buffer group was selected. Check ISE is in good working condition-refer to ISE manual (Ion 6+). Ensure any calibration points between each other must be within 1 decade. (Ion 6+) a) Release reading by pressing HOLD. [. . . ]