User manual HANNA INSTRUMENTS HI 86302

[. . . ] 150 hours Dimensions 164 x 76 x 45 mm (6. 4 x 3. 0 x 1. 8'') Weight 250 g (8. 8 oz. ) Range Resolution Accuracy Calibration PRELIMINARY EXAMINATION Remove the instrument from the packing material and examine it carefully. If any damage has occurred during shipment, immediately notify your Dealer or the nearest Hanna Customer Service Center. Each meter is supplied with: · Conductivity probe · HI 7634D/1 for HI 86301 and HI 86303 · HI 7632D/1 for HI 86302 and HI 86304 · Calibration solution sachet (20 mL) · HI 70031 (1413 S/cm) for HI 86303 · HI 70039 (5. 00 mS/cm) for HI 86304 · HI 70032 (1382 ppm) for HI 86301 & HI 86302 · Battery, screwdriver & instructions Note: Conserve all packing material until the instrument has been observed to function correctly. [. . . ] The BEPS (Battery Error Prevention System) automatically switches the meter off when the battery level is too low to ensure reliable readings. The housing has been completely sealed against humidity, for use in any type of environment. Choose the model with the measurement range that best fits your application: · HI 86301 reads TDS from 0 to 1999 ppm (mg/L) · HI 86302 reads TDS from 0. 00 to 10. 00 ppt (g/L) · HI 86303 reads EC from 0 to 1999 S/cm · HI 86304 reads EC from 0. 00 to 19. 99 mS/cm All rights are reserved. Reproduction in whole or in part is prohibited without the written consent of the copyright owner, Hanna Instruments. Hanna Instruments reserves the right to modify the design, construction and appearance of its products without advance notice. TAKING MEASUREMENTS · Each meter is supplied complete with a 9V alkaline battery. Remove the battery compartment cover on the rear of the meter and install the battery while paying attention to the correct polarity (see also "Battery Replacement" section). · Connect the probe to the DIN plug on the top of the meter, and switch the instrument on by pressing the ON/OFF button. For best accuracy, the probe should not touch or stand close to the vessel's walls or bottom. · Tap the probe gently on the bottom and shake it, to make sure no air bubbles have remained trapped inside. The LCD will show the EC or TDS value automatically compensated for temperature effects. CALIBRATION · Pour a small quantity of the proper calibration solution in a beaker (HI 7031 for HI 86303, HI 7032 for HI 86301 and HI 86302, HI 7039 for HI 86304). · The calibration is a manual, 1-point procedure through trimmer. To access the calibration trimmer, remove the battery compartment cover on the rear of the meter. · Turn the meter on and immerse the probe in the calibration solution, making sure that the metal pins are completely submerged and the probe body does not touch nor stand close to the side walls of the beaker. · Tap the probe gently on the bottom and shake it, to make sure no air bubbles have remained trapped inside. · Wait for a couple of minutes for thermal equilibrium to be reached and the temperature to be compensated, then adjust the calibration trimmer with the supplied screwdriver until the display shows the calibration solution value. [. . . ] Battery replacement must only take place in a nonhazardous area using a 9V alkaline battery. Unscrew the three screws on the rear of the meter, remove the battery compartment cover and replace the 9V battery with a new one. Make sure the battery contacts are tight and secure before replacing the cover. PROBE MAINTENANCE It is recommended to clean the probe at least once a month, by following this procedure: · Immerse the tip of the probe in the HI 7061 cleaning solution for half an hour. [. . . ]