User manual HANNA INSTRUMENTS HI 9622

[. . . ] HANNA LITERATURE Hanna publishes a wide range of catalogs and handbooks for an equally wide range of applications. The reference literature currently covers areas such as: Instruction Manual · Water Treatment · Process · Swimming Pools · Agriculture · Food · Laboratory · Thermometry and many others. New reference material is constantly being added to the library. For these and other catalogs, handbooks and leaflets, contact your dealer or the Hanna Customer Service Center nearest to you. [. . . ] - Loss of shielding due to low electrolyte level (in refillable electrodes only): refill with HI 7071 for single junction or HI 7082 for double junction electrodes. · Dry Membrane/Junction: Soak in Storage Solution HI 70300 for at least 1 hour. · Drifting: Soak the electrode tip in warm Hanna Solution HI 7082 for one hour and rinse tip with distilled water (refill with fresh HI 7071 for single junction electrodes and HI 7082 for double junction electrodes if necessary). · Low Slope: Refer to the cleaning procedure above. · No Slope: - Check the electrode for cracks in glass stem or bulb (replace the electrode if cracks are found). - Make sure cable and connections are not damaged nor lying in a pool of water or solution. · Slow Response/Excessive Drift: Soak the tip in Hanna Solution HI 7061 for 30 minutes, rinse thoroughly in distilled water and then follow the Cleaning Procedure above. · For ORP Electrodes: polish the metal tip with a lightly abrasive paper (paying attention not to scratch the surface) and wash thoroughly with water. 41 Battery Type Life Environment Dimensions Weight 16 If the bulb and/or junction are dry, soak the electrode in HI 70300 Storage Solution for at least one hour. For refillable electrodes: If the refill solution (electrolyte) is more than 2½ cm (1") 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 AmpHel® electrodes: If the electrode does not respond to pH changes, the battery is run down and the electrode should be replaced. FUNCTIONAL DESCRIPTION HI 9622 TEST MEASUREMENT Rinse the electrode tip with distilled water. Immerse the tip (bottom 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 the solution to be tested, before taking your measurements. STORAGE To minimize clogging and assure a quick response time, the glass bulb and the junction should be kept moist and not allowed to dry out. When not in use, replace the solution in the protective cap with a few drops of HI 70300 Storage Solution or, in its absence, HI 7007 pH 7. 01 Buffer Solution. Follow the Preparation Procedure above before taking measurements. Note: NEVER STORE THE ELECTRODE IN DISTILLED OR DEIONIZED WATER. 1) 2) 3) 4) 5) 6) 7) 8) 9) PERIODIC MAINTENANCE Inspect the electrode and the cable. The cable used for the 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. Connectors must be perfectly clean and dry. If any scratches or cracks are present, replace the electrode. For refillable electrodes: Refill the electrode with fresh electrolyte (HI 7071 for single junction or HI 7082 for double junction electrodes). Allow the electrode to stand upright for 1 hour. Follow the Storage Procedure above. AmpHel® is a registered Trademark of "Hanna Instruments" BNC socket for combination pH or ORP electrode. RANGE to select the pH, °C or mV range. [. . . ] · The LCD will now flash "4. 01 ". If the CAL key is pressed, the slope calibration will change to "10. 01 ". 30 e °C ºC pH 4 cm (1½") · Press the pH key to read pH values. Stir gently and wait for a couple of minutes. · Adjust the STD trimmer (for HI 8314) or OFFSET trimmer (for HI 8915) on the lower left of the front panel until LCD shows the pH value at the noted temperature (see the pH versus temperature chart on page 35). pH OFFSE T · Rinse and immerse the pH electrode in pH 4. 01 or pH 10. 01 buffer (2nd calibration point) and stir gently. HI 7004 · 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 SLOPE The pH calibration is now complete. 27 PROCEDURE FOR HI 8424 · Switch the meter on after connecting the pH electrode and the temperature probe. [. . . ]