User manual HANNA INSTRUMENTS HI 8314

[. . . ] c o m Compliance with the CE Directives WARRANTY All Hanna Instruments meters are warranted for two years against defects in workmanship and materials when used for their intended purpose and maintained according to instructions. The electrodes and the probes are warranted for a period of six months. This warranty is limited to repair or replacement free of charge. Damages due to accident, misuse, tampering or lack of prescribed maintenance are not covered. [. . . ] 5) SLOPE trimmer for SLOPE calibration of pH. 6) °C key, to display the temperature measurement. 8) ON/OFF key. DISPLAY CODE GUIDE °C Symbol indicates the meter is in temperature mode. pH Symbol indicates the meter is in pH mode. mV Symbol indicates the meter is in mV mode. All rights are reserved. Reproduction in whole or in part is prohibited without the written consent of the copyright owner, Hanna Instruments Inc. , Woonsocket, Rhode Island, 02895 , USA. Hanna Instruments reserves the right to modify the design, construction and appearance of its products without advance notice. OPERATIONAL GUIDE INITIAL PREPARATION The meter is supplied complete with a 9V battery. Remove the battery compartment cover on the back of the meter, install the battery while paying attention to its polarity. Always remove the electrode protective cap before taking any measurements. If the electrode has been left dry, soak the tip in HI 70300 Storage Solution for half an hour to reactivate it. Connect the pH electrode to the DIN connector on the top of the instrument. Turn the meter ON by pressing the ON/OFF key. pH CALIBRATION For greatest accuracy, frequent calibration of the instrument is recommended. The instrument should be recalibrated for pH: a) Whenever the pH electrode is replaced. d) Where extreme accuracy is required. · Rinse and immerse the pH electrode in pH4. 01 or pH10. 01 buffer (2nd calibration point) and stir gently. · Wait a couple of minutes and adjust the SLOPE trimmer on the lower right of the front panel until the LCD shows the pH value at the noted temperature. pH ACCESSORIES amplified, combination pH-electrode with builtin temperature sensor and DIN connector HI 3618D amplified, combination, Platinum ORP-electrode with built-in temperature sensor and DIN connector HI 4619D amplified, combination, Gold ORP-electrode with built-in temperature sensor and DIN connector HI 7004M pH 4. 01 Buffer Solution, 230 mL bottle HI 7007M pH 7. 01 Buffer Solution, 230 mL bottle HI 7010M pH 10. 01 Buffer Solution, 230 mL bottle HI 70300M Storage Solution, 230 mL bottle HI 7061M General Cleaning Solution, 230 mL bottle HI 7082 3. 5M KCl Electrolyte, 4 x 50 mL HI 7091M Reducing Pretreatment Solution, 230 mL bottle HI 7092M Oxidizing Pretreatment Solution, 230 mL bottle HI 731326 Calibration screwdriver (20 pcs) HI 76405 Electrode holder HI 1217D SLOPE PREPARATION Pour small quantities of pH7. 01 (HI 7007) and pH4. 01 (HI 7004) buffer solutions into two clean beakers. For accurate calibration use two beakers for each buffer solution, the first one for rinsing the tip of the electrode, the second one for calibration. In this way contamination of the buffers is minimized. To obtain accurate readings, use pH7. 01 (HI 7007) and pH4. 01 (HI 7004) buffers if you are going to measure acidic samples, or pH7. 01 (HI 7007) and pH10. 01 (HI 7010) for alkaline measurements. If you need to calibrate the meter to NBS standards, use pH6. 86 (HI 7006) instead of pH7. 01 and pH9. 18 (HI 7009) instead of pH10. 01. The pH calibration is now complete. pH VALUES AT VARIOUS TEMPERATURES TEMP °C 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 4. 01 4. 01 4. 00 4. 00 4. 00 4. 00 4. 01 4. 02 4. 03 4. 04 4. 05 4. 06 4. 07 4. 09 4. 11 4. 12 pH VALUES 7. 01 7. 13 7. 10 7. 07 7. 04 7. 03 7. 01 7. 00 6. 99 6. 98 6. 98 6. 98 6. 98 6. 98 6. 99 6. 99 10. 01 10. 32 10. 24 10. 18 10. 12 10. 06 10. 01 9. 96 9. 92 9. 88 9. 85 9. 82 9. 79 9. 77 9. 76 9. 75 TAKING pH MEASUREMENTS To take a pH measurement simply submerge the electrode tip (at least 4cm/ 1½") into the sample to be tested. Shake briefly and wait a couple of minutes for the reading to stabilize. [. . . ] A low battery level may also result in unreliable measurements. It is recommended to replace the battery immediately. Unscrew the 3 screws on the back of the meter, remove the battery cover and replace the battery while paying attention to its polarity. Replacement must only take place in a non-hazardous area using an alkaline 9V battery. ºC TAKING TEMPERATURE MEASUREMENTS Turn the instrument ON, press the °C key and allow the reading to stabilize. °C · Press the pH key to read pH values. [. . . ]