User manual HANNA INSTRUMENTS HI8615L

[. . . ] HI 8614 and HI 8614L can be connected to the Hanna process instruments HI 8510T, HI 8710T or HI 8711T, or to any recorder, computer or data monitoring device that accepts 4 to 20 mA input. HI 8615 and HI 8615L can be connected to the Hanna meters HI 8512T, HI 8720T or to any recorder, computer or data monitor that accepts 4 to 20 mA input. 3 TABLE OF CONTENTS Preliminary Examination . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 pH Calibration with Automatic Temperature Compensation (HI8614 & HI8614L) . . . . . . . . . . 9 pH Calibration with Manual Temperature Compensation (HI 8614 & HI 8614L) . . . . . . . [. . . ] Follow the procedure as outlined in the calibration with automatic temperature compensation and use the thermometer reading to adjust the trimmer until the ammeter reads the value according to the following table. pH 4. 01 Buffer pH 7. 01 Buffer pH 10. 01 Buffer °C · · · Note: when the instrument is used in conjunction with the Hanna indicator HI 8510T or controllers HI 8710T, HI 8711T, the calibration can also be performed on the indicator/controller. 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. With HI 8615L the instrument display can be used during calibration without the need to connect the ammeter. 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. 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. 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. Immerse the tip (4 cm / 1½") in the sample and stir gently for approx. For a faster response and to avoid cross contamination of the samples, rinse the electrode tip with a few drops of the solution to be tested, before taking measurements. STORAGE To minimize clogging and assuring a quick response time, the glass bulb and the junction should be kept moist and not allowed to dry out. Replace the solution in the protective cap with a few drops of HI 70300 storage solution or, in its absence, filling solution (HI 7071 for single junction or HI 7082 for double junction electrodes). Note: NEVER STORE THE ELECTRODE IN DISTILLED WATER OR DRY. PERIODIC MAINTENANCE Inspect the electrode and the cable. The cable used for connection to the meter must be intact and there must be no points of broken insulation on the cable or cracks on the electrode stem or bulb. [. . . ] 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. Reproduction in whole or in part is prohibited without the written consent of the copyright owner. Hanna Instruments reserves the right to modify the design, construction and appearance of its products without advance notice. 34 Recommendations for Users Before using these products, make sure that they are entirely suitable for the environment in which they are used. [. . . ]