User manual HANNA INSTRUMENTS HI 8615 BROCHURE

[. . . ] Instruction Manual HI 8614 · HI 8614L HI 8615 · HI 8615L pH and ORP Transmitters pH pH INDIC ITTER SM & TRAN L HI 8614OR AT www. hannainst. com 1 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. If you need additional technical information, do not hesitate to e-mail us at tech@hannainst. com. [. . . ] In this case slight calibration adjustment can be made on the indicator/ controller even if the whole system calibration is advised, always starting from the transmitter. · Temperature °C 0 5 10 15 20 25 30 35 40 45 50 55 60 °F 32 41 50 59 68 77 86 95 104 113 122 131 140 pH 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 mA 8. 576 8. 565 8. 565 8. 565 8. 565 8. 576 8. 587 8. 599 8. 610 8. 622 8. 633 8. 645 8. 667 pH 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 mA 12. 137 12. 103 12. 069 12. 034 12. 023 12. 000 11. 989 11. 977 11. 966 11. 966 11. 966 11. 966 11. 966 pH 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 mA 15. 789 15. 697 15. 629 15. 560 15. 491 15. 434 15. 377 15. 331 15. 285 15. 251 15. 217 15. 182 15. 159 12 13 ORP CALIBRATION (HI8615 & HI8615L) Initial preparation Disconnect the +ve supply cable from the "+VE LOOP" terminal and connect a 20 mA f. s. ammeter between the +ve cable and the "+VE LOOP" terminal. With HI 8615L the instrument display can be used during calibration without the need to connect the ammeter. In this case the values are directly expressed in mV units. Pour a small quantity of HI 7020 ORP solution into a beaker. Procedure · Connect the shorting BNC connector to the ORP transmitter. · Adjust the OFFSET ADJUSTMENT trimmer on the module for a display of 12 mA on the ammeter or 0 mV on the instrument display (HI 8615L only). This sets the zero point for the transmitter. HI 70 20 · If the reading lies outside this range, adjust the slope adjustment trimmer on the transmitter for a reading just within this range. The unit is now calibrated. SLOPE ADJUSTMENT OFFSET ADJUSTMENT A complete calibration of the transmitter module is advised periodically. This calibration procedure requires the HI 8427 or the HI 931001 pH and ORP simulator to simulate the ORP electrode. HI 8427 or HI 931001 produce a known signal into the system so that the faults of the system can be isolated. DO NOT BE ALARMED IF ANY SALT DEPOSITS ARE PRESENT. This is normal with electrodes and they will disappear when rinsed with water. During transport tiny bubbles of air may have formed inside the glass bulb. The electrode cannot function properly under these conditions. These bubbles can be removed by 18 19 "shaking down" the electrode as you would do with a glass thermometer. If the bulb and/or junction are dry, soak the electrode in HI70300 storage solution for at least one hour. For refillable electrodes If the fill solution (electrolyte) is more than 1 cm (½") below the fill hole, add HI 7082 3. 5M KCl electrolyte solution for double junction or HI 7071 3. 5M KCl+AgCl electrolyte solution for single junction electrodes. For a faster response unscrew the fill hole screw during measurements. For AmpHel® electrodes If the electrode does not respond to pH changes, the battery is run down and the electrode should be replaced. MEASUREMENT Rinse the electrode tip with distilled water. Immerse the tip (4 cm / 1½") in the sample and stir gently for approx. [. . . ] If under warranty, report the model number, date of purchase, serial number and the nature of the failure. Obtain a Returned Goods Authorization from the Customer Service department first and then return the instrument with the Authorization # included along with shipment costs prepaid. If the repair is not covered by the warranty, you will be notified of the charge for repair or replacement. When shipping any instrument, make sure it is properly packaged for complete protection. CE DECLARATION OF CONFORMITY All rights are reserved. [. . . ]