User manual HANNA INSTRUMENTS HI 931402

[. . . ] Instruction Manual HI 931402 HI 931410 Microprocessor Bench-top pH Meters ins rum pH ns / CFM / CFM CAL pH ca libratio n proc edure Start calibr Selec ation t buffe m wh r 1 val dy MR COMM RANG ue Confir Functio MEM Recal n ring dis us sto ion play res ta ult Selec Confir t buffe en rea ue For sto °C m wh r 2 val dy en rea l previo For RS t pH or HI 93 MIC 1402 pH M ROPROC ETER ES S O R MEM E Se lec 232 con ORP red da figurat measu remen t ON °C OFF MR °C CAL COMM CFM RANGE This Instrument is in Compliance with the CE Directives www. hannainst. com Dear Customer, Thank you for choosing a Hanna Instruments Product. Please read this instruction manual carefully before using the instrument. This manual will provide you with all the necessary information for the correct use of the instrument, as well as a precise idea of its versatility in a wide range of applications. These instruments are in compliance with CSA, (EN 50081-1 and EN 50082-1) UL and directives. [. . . ] TWO POINT CALIBRATION · Proceed as described in "One point calibration" but do not quit calibration by pressing the pH/mV key at the end. · After the first calibration point is confirmed, immerse the pH electrode and the temperature probe into the second buffer solution (pH 4. 01 or pH 10. 01) and shake briefly. HI 7004 23 Note: the electrode should be submerged approximately 4 cm (1½") into the solution. The temperature probe should be located as close as possible to the pH electrode. · Rinse the electrode and the temperature probe before immersing them into pH 4. 01/ pH10. 01 calibration buffer, shake briefly and wait for thermal equilibrium. · The meter automatically recognizes the buffer value and prompts for the second at "t2" (pH 4. 01, acid) or "t3" (pH 10. 01, alkaline). · Press the CON key to confirm the pH value and the display will indicate the temperature compensated buffer value e. g. if the temperature is at 25°C, the display will show "pH 4. 01" or "10. 01", depending on the solution used. °C pH 4 cm (1½") CON If the temperature is at 20°C, the display will show respectively "pH 4. 00" or "pH 10. 06" (see page 26). The pH symbol will stop flashing and the unit is now calibrated and ready for measurements. CON °C pH 24 · If the reading is drifting, turn the meter off and repeat the calibration procedure waiting longer time for the reading to stabilize. However, usually 1 or 2 minutes are enough to prevent drifting of the reading. Note: If you need to unplug the instrument, press the OFF key thus switching the instrument off before disconnecting the power cord. In the case of a power failure while the instrument is operational, re-calibration might be required. 25 pH VALUES AT VARIOUS TEMPERATURE Temperature has an effect on pH. The calibration buffer solutions are effected by temperature changes to a lesser degree than normal solutions. During calibration the meter will automatically calibrate to the pH value corresponding to the measured or set temperature. For manual temperature compensation please refer to the following chart. pH Buffers °C 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 °F 32 41 50 59 68 77 86 95 104 113 122 131 140 149 158 167 176 185 194 203 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 4. 14 4. 16 4. 17 4. 19 4. 20 6. 86 6. 98 6. 95 6. 92 6. 90 6. 88 6. 86 6. 85 6. 84 6. 84 6. 83 6. 83 6. 84 6. 84 6. 85 6. 85 6. 86 6. 86 6. 87 6. 88 6. 89 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 6. 99 7. 01 7. 02 7. 03 7. 04 9. 18 9. 46 9. 39 9. 33 9. 27 9. 22 9. 18 9. 14 9. 10 9. 07 9. 04 9. 01 8. 99 8. 97 8. 95 8. 93 8. 91 8. 89 8. 87 8. 85 8. 83 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 9. 74 9. 73 9. 74 9. 75 9. 76 For instance, if the buffer temperature is at 25°C, the display will show pH 4. 01 or 7. 01 or 10. 01. If the buffer temperature is at 20°C, the display will show pH 4. 00/7. 03/10. 06. If the buffer temperature is at 50°C, the display will show pH 4. 06/6. 98/9. 82. 26 TEMPERATURE AND mV CALIBRATION All Hanna bench-top pH meters have been factory calibrated for the temperature and mV and is ready for measurements. The temperature probes and ORP electrodes are interchangeable and no temperature or mV calibration is needed when the temperature probe or the ORP electrode is replaced. If, for any reason, the temperature or the mV measurements are out of accuracy, the temperature or the mV re-calibration should be carried out. In any case, we recommend that you have your bench-top meters re-calibrated in temperature and mV once a year. In HI 931402 it is possible to calibrate the meter for temperature and mV (see page 29), however it is recommendable that these calibrations are performed by technical personnel only. For an accurate recalibration, contact your nearest Hanna Service Center. 27 INTERFACE WITH PC (HI931402 ONLY) Data transmission from the instrument to the PC is now much easier with the new HI 92000 Windows® compatible application software offered by Hanna Instruments. User friendly, HI 92000 offers a variety of features and has an on line help feature to support you throughout all situations. [. . . ] Use: surface measurement. 12 mm 0. 5" HI 1413 110 mm 4. 3" Half-cell electrodes: HI 2110B Glass-body, single half-cell pH electrode. Use: general purpose. 9. 5mm DIA 0. 37" 12 mm 0. 5" HI 2110 120 mm 4. 7" HI 5311 Glass-body, Ag/AgCl reference half-cell electrode, double junction, refillable with 4mm plug with 1m (3. 3') cable. Use: general purpose with wide temperature range. 12 mm 0. 5" HI 5311 120 mm 4. 7" ® Kynar is registered Trademark of "Pennwalt Corp. " 46 HI 5412 Glass-body, single Calomel reference halfcell electrode, refillable with 4mm plug with 1m (3. 3') cable. Use: general purpose with constant temperature range. 12 mm 0. 5" HI 5412 120 mm 4. 7" ORP electrodes: HI 3131B / HI 3111S Glass-body, refillable, combination platinum ORP electrode. [. . . ]