User manual HANNA INSTRUMENTS HI 981504

[. . . ] Damages due to accidents, misuse, tampering or lack of prescribed maintenance are not covered. If service is required, contact the dealer from whom you purchased the instrument. If under warranty, report the model number, date of purchase, serial number and the nature of the failure. If the repair is not covered by the warranty, you will be notified of the charges incurred. [. . . ] Operation of these instruments in residential areas could cause unacceptable interferences to radio and TV equipment. The glass bulb at the end of the electrode is sensitive to electrostatic discharges. During operation, ESD wrist straps should be worn to avoid possible damage to the electrode by electrostatic discharges. Any variation introduced by the user to the supplied equipment may degrade the instruments' EMC performance. To avoid electrical shock, do not use this instrument when voltage at the measurement surface exceeds 24 Vac or 60 Vdc. To avoid damage or burns, do not perform any measurement in microwave ovens. Hanna Instruments reserves the right to modify the design, construction and appearance of its products without advance notice. °C/°F SELECTION · The user can easily select the temperature unit, in degrees Celsius (default) or Fahrenheit through a switch on the rear panel. · Remove the label and set the switch to the desired position. Replace the label for better protection against humidity. TDS CALIBRATION · Turn the meter on. · Pour a small quantity of the proper calibration solution (HI 7032 for HI 981504/5 or HI 70442 for HI 981504/7) in a beaker. If possible, use plastic beakers to minimize any EMC interference. · Immerse the TDS probe in the solution, making sure that the metal pins are completely submerged. Note: For best accuracy, the probe body should not touch nor stand close to the side walls of the beaker. · Wait for a couple of minutes for thermal equilibrium to be reached and the temperature to be compensated. · Tap the probe gently on the bottom and shake it, to make sure no air bubbles have remained trapped inside. · Adjust the calibration trimmer with the supplied screwdriver until the display shows "1380" ppm (HI 981504/5) or "1500" ppm (HI 981504/7) Calibration is now complete. pH ELECTRODE MAINTENANCE · When not in use, rinse the electrode with water and store it with a few drops of HI 70300 storage solution in the protective cap. Always replace the protective cap after use. DO NOT USE DISTILLED OR DEIONIZED WATER FOR STORAGE PURPOSES. · If the electrode has been left dry, soak the tip in HI 70300 storage solution overnight to reactivate it. · To minimize clogging and provide longer life for the pH electrode, it is recommended to clean it at least once a week. Immerse the tip of the electrode in the HI 700661 cleaning solution supplied with the instrument, for half an hour and then rinse it with tap water. ACCESSORIES HI 1286 HI 7634* HI 70004P HI 7004M HI 70007P HI 7007M HI 70010P HI 7010M HI 70032P HI 7032M HI 70442P HI 70442M HI 70300M HI 700661P HI 7061M HI 710005 HI 710006 HI 731326 Double junction, plastic body pH electrode with 2 m (6. 6') cable and BNC connector TDS probe with 2 m (6. 6') cable pH 4. 01 solution, 20 mL sachet (25 pcs) pH 4. 01 solution, 230 mL bottle pH 7. 01 solution, 20 mL sachet (25 pcs) pH 7. 01 solution, 230 mL bottle pH 10. 01 solution, 20 mL sachet (25 pcs) pH 10. 01 solution, 230 mL bottle 1382 ppm solution, 20 mL sachet (25 pcs) 1382 ppm solution, 230 mL bottle 1500 ppm solution, 20 mL sachet (25 pcs) 1500 ppm solution, 230 mL bottle Storage solution, 230 mL bottle Cleaning solution, 20 mL sachet (25 pcs) Cleaning solution, 230 mL bottle 115 Vac / 12 Vdc power adapter 230 Vac / 12 Vdc power adapter Calibration screwdriver (20 pcs) pH ELECTRODE CONNECTION In order to protect the instrument against vapors and humidity, the BNC connector is protected with a waterproof sheath. [. . . ] The pH calibration is now complete. TAKING MEASUREMENTS · Turn the meter on by connecting the supplied 12 Vdc power adapter to the meter and then to the mains. · Remove the protective cap from the pH electrode. · Immerse the tips of pH electrode (at least 4cm/1½"), TDS and temperature probes into the solution to be tested. For best accuracy, the probes should not touch or stand close to the vessel's walls or bottom. [. . . ]