User manual HANNA INSTRUMENTS HI 98130

[. . . ] Battery compartment Liquid Crystal Display (LCD) ON/OFF/MODE button HI 73127 pH electrode Temperature sensor (behind) EC/TDS probe EC/TDS Cal. solutions HI 98129: HI7031 (1413 µS/cm) HI7032 (1382 ppm; CONV=0. 5) HI70442 (1500 ppm; CONV=0. 7) HI 98130: HI7030 (12. 88 mS/cm) HI70038 (6. 44 ppt; CONV=0. 5 or 9. 02 ppt; CONV=0. 7) Electrode (included) Battery Type/Life Auto-off Dimensions Weight HI 73127 pH electrode 4 x 1. 5V with BEPS/approx. 100 hours after 8 minutes of non-use 163 x 40 x 26 mm (6. 4 x 1. 6 x 1. 0") 100 g (3. 5 oz. ) WARRANTY HI 98129 and HI 98130 are warranted for one year against defects in workmanship and materials when used for their intended purpose and maintained according to instructions. The electrode is warranted for a period of six months. This warranty is limited to repair or replacement free of charge. [. . . ] All the used segments on the LCD will be visible for a few seconds, followed by a percent indication of the remaining battery life (Eg. To change the temperature unit To change the temperature unit (from °C to °F), from measurement mode, press and hold the /MODE button until TEMP and the current temperature unit are displayed on the lower LCD (E. g. Use the SET/HOLD button to change the temperature unit, and then press the /MODE button twice to return to normal measuring mode. To freeze the display Press the SET/HOLD button for 2-3 seconds until HOLD appears on the secondary display. Press either button to return to normal mode. To turn the meter off Press the /MODE button while in normal measurement mode. OFF will appear on the lower part of the display. Notes: · Before taking any measurement make sure the meter has been calibrated. · To clear a previous calibration, press the /MODE button after entering the calibration mode. The lower LCD will display ESC for 1 second and the meter will return to normal measurement mode. The CAL symbol on the LCD will disappear. The meter will be reset to the default calibration. · If measurements are taken in different samples successively, rinse the probe thoroughly to eliminate cross-contamination; and after cleaning, rinse the probe with some of the sample to be measured. · Press the SET/HOLD button to change the buffer value. · Press the /MODE button to return to the normal measuring mode. Calibration procedure From measurement mode, press and hold the / MODE button until CAL is displayed on the lower LCD. The LCD will display pH 7. 01 USE or pH 6. 86 USE (if you have selected the NIST buffer set). For a single-point pH calibration, place the electrode in any buffer from the selected buffer set (eg. The meter will recognize the buffer value automatically. If using pH 4. 01 or pH 10. 01, the meter will display OK for 1 second and then return to the normal measuring mode. If using pH 7. 01, after recognition of the buffer the meter will ask for pH 4. 01 as second calibration point. Press the /MODE button to return to measurement mode or, if desired, proceed with the 2-point calibration as explained below. Note: It is always recommended to carry out a twopoint calibration for better accuracy. [. . . ] Replace the top, making sure that the gasket is properly seated in place, and tighten the screws to ensure a watertight seal. pH MEASUREMENTS & CALIBRATION Taking measurements Select the pH mode with the SET/HOLD button. Submerge the electrode in the solution to be tested. The measurements should be taken when the stability symbol on the top left of the LCD disappears. The pH value automatically compensated for temperature is shown on the primary LCD while the secondary LCD shows the temperature of the sample. [. . . ]