User manual HANNA INSTRUMENTS HI 87314

[. . . ] This instrument is in compliance with the directives. FUNCTIONAL DESCRIPTION PRELIMINARY EXAMINATION Remove the instrument from the packing material and examine it carefully to make sure that no damage has occurred during shipment. The meter is supplied complete with: · HI 76302W 4-ring conductivity probe · HI 3316D resistivity probe · 9 V battery (not rechargeable) · calibration screwdriver and instructions. Note: Conserve all packing material until the instrument has been observed to function correctly. [. . . ] Both probes use the same DIN plug on the top of the instrument, and the meter automatically recognizes which probe is connected. The instrument can also be powered by a 9V rechargeable battery, thanks to its inductive system for battery recharge, with no external contact, to ensure a watertight seal. The battery can be recharged using the HI 710040 battery charger (optional), without needing to open the meter or remove the battery. 1) 2) 3) 4) 5) 6) DIN connector for EC and resistivity probe Liquid Crystal Display EC RANGE key, to select the conductivity range Conductivity temperature coefficient knob Resistivity temperature coefficient knob ON/OFF key, to turn the meter ON and OFF SPECIFICATIONS Range 199. 9 µS/cm / 1999 µS/cm 19. 99 mS/cm / 199. 9 mS/cm 0 to 19. 90 M·cm Resolution 0. 1 µS/cm / 1 µS/cm / 0. 01 mS/cm / 0. 1 mS/cm 0. 10 M·cm Accuracy (@20°C/68°F) Calibration ±1% FS for EC ±2% FS for resistivity A) Resistivity calibration trimmer B) Conductivity calibration trimmer C) 9 V battery (can also be rechargeable) Manual, 1 point, for both EC and resistivity Temperature Compensation Automatic from 0 to 50°C with ß selectable from 0 to 2. 5%/°C for EC and from 2 to 7%/°C for resistivity Probes (included) Battery Type HI 76302W for conductivity HI 3316D for resistivity 1 x 9V (also rechargeable) Approx. 100 hours of use 0 to 50°C (32 to 122°F); RH max 100% 164 x 76 x 45 mm (6. 5 x 3. 0 x1. 8") 250 g (8. 8 oz. ) All rights are reserved. Reproduction in whole or in part is prohibited without the written consent of the copyright owner. Hanna Instruments reserves the right to modify the design, construction and appearance of its products without advance notice. 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 interferences to radio and TV equipments, requiring the operator to take all necessary steps to correct interferences. Any variation introduced by the user to the supplied equipment may degrade the instruments' EMC performance. To avoid damages or burns, do not perform any measurement in microwave ovens. Battery Life Environment Dimensions Weight OPERATIONAL GUIDE INITIAL PREPARATION The meter is supplied complete with a 9V battery (not rechargeable). Remove the battery compartment cover on the back of the meter, install the battery while paying attention to its polarity. Connect the desired probe (HI 76302W for EC or HI 3316D for resistivity measurements) to the DIN socket on the top of the meter. Turn the meter ON by pressing the ON/OFF key. CALIBRATION CONDUCTIVITY CALIBRATION · It is recommended to calibrate the instrument for the conductivity range at least once a month, or when the probe is changed. · For better accuracy, choose a solution with a conductivity value close to the sample to be measured. If you are measuring in the mS ranges, calibrate the meter using the HI 7030 (12. 88 mS/cm) or HI 7034 (80 mS/cm) conductivity solution. For the µS ranges, use HI 7031 (1413 µS/cm) for the 0 to 1999 µS/cm range, or HI 7033 (84 µS/cm) for the 0 to 199. 9 µS/cm range. · Rinse the probe thoroughly with distilled water and, if possible, use plastic beakers to minimize any EMC interferences. · Pour a small quantity of the desired conductivity solution into a plastic beaker, and immerse the probe while making sure that the holes of the sleeve are completely submerged. Tap the probe lightly on the bottom of the beaker to remove any air bubbles trapped inside the sleeve. · Select the appropriate measurement range: 199. 9 µS if calibrating with HI 7033 solution, 1999 µS for HI 7031, 19. 99 mS for HI 7030, or 199. 9 mS for HI 7034. [. . . ] · The reading is automatically corrected for temperature variations by using the linear compensation method: R25=Rt(1+(t-25)) where Rt is the resistivity at the temperature t, and the reference temperature is 25ºC. · The temperature coefficient is selectable through a front knob, from 2 to 7%/°C. Replacement must only take place in a safe area using an alkaline 9V battery. You can also install a 9V rechargeable battery and recharge it using the optional HI 710040 battery charger. [. . . ]