User manual HANNA INSTRUMENTS HI 8733

[. . . ] 7 CALIBRATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 TDS VERSUS TEMPERATURE CHART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13 DETERMINING THE TEMPERATURE COEFFICIENT OF A SOLUTION (HI 8733) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14 PROBE MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] · ChecktempC or another accurate thermometer with 0. 1°C resolution (not necessary for HI 8733). · a small screwdriver. TEMPERATURE · Press COND/TEMP (or TDS/TEMP) again to display conductivity measurement. · Select 19. 99 mS/cm (HI 8633) or 1999 mg/L (HI 8734) range by pressing the appropriate range key. COND. TEMP. TDS TEMP. 19. 99 mS 1999 mg/l PROCEDURE FOR HI 8633 AND HI 8734 · Pour sufficient quantity of a conductivity (HI 8633) or TDS (HI 8734) calibration solution (e. g. · Immerse the conductivity probe, making sure that holes are completely submerged, and the ChecktempC in the solution. · Wait for a couple of minutes for thermal equilibrium to be reached. · Tap the probe on the bottom, then shake it while rotating to make sure no 8 703 0 · Remove the battery compartment cover and adjust the calibration trimmer located inside with the calibration screwdriver until the display shows for HI 8633 the conductivity reading at 25°C (see the conductivity vs. @ 25°C, 12880 µS/ cm = 12. 88 mS/cm, or for HI 8734 the TDS reading at 25°C (see the TDS vs. @25°C, 1382 mg/L. °C HI 9 · All subsequent measurements will be compensated to 25°C (77°F). If you prefer to standardize the temperature compensation to 20°C (68°F) rather than 25°C (77°F), leave the TEMPERATURE knob at 18°C (if the temperature of the solution is 18°C), adjust the trimmer to read "11. 67 mS" (see the conductivity vs. · The calibration is now complete and the instrument is ready for use. The instrument should be recalibrated at least once a month, or when the probe is changed. Note: For more accurate results, it is advisable to use a calibration solution close to the measurement range. See the "Accessories" section for a wide selection of conductivity solutions. · Remove the battery compartment cover and adjust the calibration trimmer located inside with the calibration screwdriver until the display shows "12. 88 mS" i. e. the conductivity reading @ 25°C. PROCEDURE FOR HI 8733 · Pour sufficient quantity of a conductivity calibration solution (e. g. · Immerse the conductivity probe in the solution, making sure that holes are completely submerged. · Wait for a couple of minutes for thermal equilibrium to be reached. · Tap the probe on the bottom, then shake it while rotating to make sure no air bubbles remain trapped in the sleeve. · Set the temperature coefficient knob to 2% to compensate for the temperature effect of average solutions (to determine exact value for a particular solution, see page 14). · Select 19. 99 mS/cm range by pressing the appropriate range key. 10 ON OFF HI 703 0 · All subsequent measurements will be compensated to 25°C (77°F). If you prefer to standardize the temperature compensation to 20°C (68°F) rather than 25°C (77°F), adjust the trimmer to read "11. 67 mS" (see the conductivity vs. [. . . ] 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. Recommendations for Users Before using these products, make sure that they are entirely suitable for the environment in which they are used. Operation of these instruments in residential area could cause unacceptable interference to radio and TV equipment, requiring the operator to take all necessary steps to correct interferences. The metal band at the end of the probe is sensitive to electrostatic discharges. [. . . ]