User manual HANNA INSTRUMENTS HI 98204

[. . . ] · Remove deposits formed on the liquid junction and the pH glass bulb by soaking in HI 7061 solution for 1½ hour. · Rinse the bulb, platinum wire and liquid junction thoroughly with distilled water · Reassemble the compartment and the tester. · Fill the compartment with tap water. Water Test WATER TEST The "four-in-one" portable meter EN 50081-1 EN 50082-1 ON / OFF RANGE 4 pH 7 GENERAL DESCRIPTION The HANNA Water Test is a "four-in-one" portable meter designed for fast and accurate analysis and monitoring of water in biological applications, industrial wastewater, rivers, lakes, etc. [. . . ] Any variation introduced by the user to the supplied equipment may degrade the instrument's EMC performance. To avoid electrical shock, do not use this instrument when voltages at the measurement surface exceed 24 VAC or 60 VDC. To avoid damages or burns, do not perform any measurement in microwave ovens. Water Test DECLARATION OF CONFORMITY LIQUID CRYSTAL DISPLAY ON / OFF SWITCH Hanna Instruments Srl V. le delle industrie 12 35010 Ronchi di Villafranca (PD) ITALY herewith certify that the pH / ORP / Conductivity / Temperature meter ON / OFF RANGE RANGE SWITCH We 4 pH 7 OFFSET & SLOPE CALIBRATION TRIMMERS COVER BATTERY COVER Water Test has been tested and found to be in compliance with the following regulations: IEC 801-2 IEC 801-3 EN 55022 Electrostatic Discharge RF Radiated Radiated, Class B WATERTSTR1 03/96 MAXIMUM IMMERSION LEVEL IMMERSION LEVEL Date of Issue: 12-12-1995 D. Volpato - Engineering Manager On behalf of Hanna Instruments S. r. l. Stay in Touch with the Manufacturer ! BLACK COMPARTMENT · · · · · · · · · · · OPERATING INFORMATION Do not be alarmed if white crystals appear around the cap. This is normal with electrodes and they dissolve when rinsed with water. Take a sample of the water to be tested and pour into the black compartment of the Water Test. If you are scooping up the water with the black compartment, do not immerse above the maximum immersion level indicated. ON / OFF Turn the tester on by pressing the ON/OFF switch on the front panel. The tester will automatically default the temperature measurement indicated by the "°C" symbol on the display. RANGE Press the RANGE switch once to display the conductivity expressed in µS. If the tester compartment is dry for more than 2 days, you will have to wait for about 5 minutes before taking pH measurements. In order to take more accurate pH and conductivity measurements, make sure that Water Test is calibrated for pH and conductivity before use. ON / OFF When the measurements are completed, empty the compartment, rinse with tap water to minimize contamination and switch the tester off by pressing the ON/OFF switch again. In order to have a fast response time during measurement, the compartment of the tester should be filled with tap water when the tester is not in use. DO NOT USE DISTILLED OR DEIONIZED WATER FOR STORAGE PURPOSES. Water Test ON / OFF RANGE · If the display does not show "7. 0 pH", adjust the right trimmer located behind the cover until the display shows "7. 0 pH". [. . . ] Replace the screw after calibration. 10 15 16 17 18 19 20 21 50 59 60. 8 62. 6 64. 4 66. 2 68 69. 8 RANGE Water Test ON / OFF RANGE °C HI7031 °C (µS/cm) °F 71. 6 73. 4 75. 2 77 78. 8 80. 6 82. 4 84. 2 86 87. 8 µS HI7031 (µS/cm) Water Test ON / OFF RANGE 4 pH 7 pH CALIBRATION · Pour a small quantity of distilled water into the black compartment, rinse by shaking the compartment and then discard the content. · Pour a small quantity of pH 7 (HI 7007) buffer solution into the compartment and switch the tester on by pressing the ON/OFF switch. · Press the RANGE switch twice to display pH measurements. ON / OFF Water Test ON / OFF RANGE 776 896 1020 1147 1173 1199 1225 1251 1278 1305 22 23 24 25 26 27 28 29 30 31 1332 1359 1386 1413 1440 1467 1494 1521 1548 1575 700 7 4 pH 7 RIGHT SIDE HI RANGE ALWAYS USE FRESH BUFFERS FOR CALIBRATION & NEVER REUSE THEM. 7031 HI 4 pH 7 7004 HI 4 pH 7 [. . . ]