User manual HANNA INSTRUMENTS HI 96702

[. . . ] Instruction Manual HI 96702 Copper High Range ISM www. hannainst. com 1 Dear Customer, Thank you for choosing a Hanna product. This manual will provide you with the necessary information for the correct use of the instrument. If you need additional technical information, do not hesitate to e-mail us at tech@hannainst. com. TABLE OF CONTENTS PRELIMINARY EXAMINATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 GENERAL DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Furthermore, in order to maintain the same conditions during the zeroing and the measuring phases, it is necessary to close the cuvette to prevent any contamination. FUNCTIONAL DESCRIPTION INSTRUMENT DESCRIPTION 1) 2) 3) 4) 5) 6) 7) 8) GLP/ key CAL CHECK key ZERO/CFM key READ/ /TIMER key ON/OFF key Liquid Cristal Display (LCD) Cuvette alignment indicator Cuvette holder 7 KEYPAD DESCRIPTION · ON/OFF: to turn the meter on and off. Just press to zero the meter prior to measurement, or to confirm edited values. In measurement mode, press to make a measurement, or press and hold for three seconds to start a pre-programmed countdown prior to measurement. Just press to perform the validation of the meter, or press and hold for three seconds to enter calibration mode. OPERATING MODES · Measurement mode: default operation mode, enables both validation and measurement. · Calibration mode: may be entered by keeping CAL CHECK pressed for three seconds (the "CAL" tag appears), it enables calibration of the instrument. · GLP mode may be entered by pressing GLP/ ("GLP" appears), it enables consulting of user calibration date or restore factory calibration. 5 4 3 9 2 1 10 6 7 8 DISPLAY ELEMENTS DESCRIPTION 1) The measuring scheme (lamp, cuvette, detector), appears during different phases of zero or reading measurement 2) Error messages and warnings 3) The battery icon indicates the charge state of the battery 4) The hourglass appears when an internal check is in progress 5) Status messages 6) The chronometer appears when the reaction timer is running 7) The month, day and date icons appear when a date is displayed 8) Four digit main display 9) Measuring units 10) Four digit secondary display 8 ERRORS AND WARNINGS The instrument shows clear messages when erroneous condition appears. Messages are also displayed when the obtained values are outside expected range. a) on zero reading Light High: There is too much light to perform a measurement. Please check the preparation of the zero cuvette. Light Low: There is not enough light to perform a measurement. Please check the preparation of the zero cuvette. No Light: The instrument cannot adjust the light level. Please check that the sample does not contain any debris. b) on sample reading Inverted cuvettes: The sample and the zero cuvette are inverted. Zero: A zero reading was not taken. Follow the instructions of the measurement procedure for zeroing the meter. 9 Under range: A blinking "0. 00" indicates that the sample absorbs less light than the zero reference. Check the procedure and make sure you use the same cuvette for reference (zero) and measurement. Over Range: A flashing value of the maximum concentration indicates an over range condition. · All the reaction times reported in this manual are referred to 20°C (68°F). As a general rule of thumb, they should be doubled at 10°C (50°F) and halved at 30°C (86°F). · In order to maximize accuracy, prior to a measurement follow the validation procedure to be sure that the instrument is properly calibrated. If necessary, calibrate the instrument. STARTUP Prepare the instrument for measurement as follows: · Unpack the instrument by removing the dust protection sleeve from the instrument cuvette holder. · Place the battery in the instrument as described in the "BATTERY REPLACEMENT" chapter. · Do not place the instrument under direct sun light. MEASUREMENT PROCEDURE To compensate the meter for the sample turbidity or color, the measurement takes place in two phases. The display briefly shows all tags on. 12 · When the beeper sounds briefly and the LCD displays dashes, the meter is ready. The blinking "ZERO" indicates that the instrument needs to be zeroed first. · Fill the cuvette with 10 mL of unreacted sample, up to the mark, and replace the cap. · Place the cuvette into the cuvette holder and ensure that the notch on the cap is positioned securely into the groove. · Press ZERO/CFM and the lamp, cuvette and detector icons will appear on the display, depending on the measurement phase. · After a few seconds, the display will show "-0. 0-". [. . . ] LAST CALIBRATION DATE To display the calibration date: · Press GLP/ to enter GLP mode. The calibration month and day will appear on the main display and the year on the secondary display. · If no calibration was performed, the factory calibration message, "F. CAL" will appear on the main display and the instrument returns to measurement mode after three seconds. FACTORY CALIBRATION RESTORE It is possible to delete the calibration and restore factory calibration. · Press GLP/ to enter GLP mode. · Press READ/ /TIMER to enter in the factory calibration restore screen. The instrument asks for confirmation of user calibration delete. 20 · Press ZERO/CFM to restore the factory calibration or press GLP/ again to abort factory calibration restore. · The instrument briefly indicates "donE" upon restoration of factory calibration prior to returning to measurement mode. BATTERY MANAGEMENT To save battery, the instrument shuts down after 10 minutes of non-use in measurement mode and after 1 hour of non-use in calibration mode. If a valid measurement was displayed before auto-shut off, the value is displayed when the instrument is switched on. [. . . ]