User manual HANNA INSTRUMENTS HI 2210

[. . . ] Instruction Manual HI 2210 HI 2211 Microprocessor-based pH/mV/°C Bench Meters w w w. c o m 1 Dear Customer, Thank you for choosing a Hanna Instruments product. Please read this instruction manual carefully before using the instruments. This manual will provide you with the necessary information for correct use of the instruments, as well as a precise idea of their versatility. [. . . ] · Press CAL after the first calibration point was confirmed. The instrument will return to measurement mode and will memorize the one-point calibration data. Note: Press and hold down CFM and then press CAL. The instrument sets default calibration parameters, displays "CLR" message for a few seconds and then returns to normal measurement mode. TEMPERATURE CALIBRATION (for technical personnel only) All the instruments are factory calibrated for temperature. Hanna's temperature probes are interchangeable and no temperature calibration is needed when they are replaced. If the temperature measurements are inaccurate, temperature recalibration should be performed. For an accurate recalibration, contact your dealer or the nearest Hanna Customer Service Center, or follow the instructions bellow. The instrument returns to measurement mode. Note: If the reading is not close to the selected calibration point, "WRONG" tag will blink. Change the temperature probe and restart calibration. ºC 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 ºF 32 41 50 59 68 77 86 95 104 113 122 131 140 149 158 167 176 185 194 203 During calibration the instrument will display the pH buffer value at 25 ºC. 14 15 ELECTRODE CONDITIONING & MAINTENANCE For refillable electrodes: If the filling solution (electrolyte) is more than 2½ cm (1") below the fill hole, add HI 7082 or HI 8082 3. 5M KCl Electrolyte Solution for double junction or HI 7071 or HI 8071 3. 5M KCl+AgCl Electrolyte Solution for single junction electrodes. Unscrew the fill hole screw during measurements. For AmpHel ® electrodes: If the electrode does not respond to pH changes, the battery is dead and the electrode should be replaced. MEASUREMENT Rinse the electrode tip with distilled water. Immerse the tip (bottom 4 cm /1½") into the sample and stir gently for a few seconds. 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 PROCEDURE 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. Replace the solution in the protective cap with a few drops of HI 70300 or HI 80300 Storage Solution or, in its absence, Fill Solution (HI 7071 or HI 8071 for single junction and HI 7082 or HI 8082 for double junction electrodes). Follow the Preparation Procedure on page 16 before taking measurements. Note: NEVER STORE THE ELECTRODE IN DISTILLED OR DEIONIZED WATER. PERIODIC MAINTENANCE PREPARATION PROCEDURE Remove the protective cap of the pH electrode. DO NOT BE ALARMED IF SALT DEPOSITS ARE PRESENT. [. . . ] Use: general purpose. 12 mm 0. 5" FC 220 HI 4430 120 mm 4. 7" FC 911B Plastic-body (PVDF), double junction, refillable with built-in amplifier, combination pH electrode. Use: very high humidity. 12 mm 0. 5" "S" VERSION 120 mm 4. 7" Consult the Hanna General Catalog for more electrodes with screwtype or BNC connectors. FC 911 110 mm 4. 3" 24 25 EXTENSION CABLE FOR SCREW-TYPE ELECTRODES (SCREW TO BNC ADAPTER) HI 7855/1 Extension cable 1 m (3. 3') long HI 7855/3 Extension cable 3 m (9. 9') long HI 7855 SERIES CABLE CONNECTORS CONNECTOR AND 3. 0 mm (0. 12") CABLE WITH BNC RECOMMENDATIONS FOR USERS Before using these products, make sure they are entirely suitable for the environment in which they are used. Operation of these instruments in residential areas could cause unacceptable interferences to radio and TV equipment, requiring the operator to follow all necessary steps to correct interferences. The glass bulb at the end of the pH electrode is sensitive to electrostatic discharges. [. . . ]