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Manual abstract: user guide HANNA INSTRUMENTS HI 96716C
Detailed instructions for use are in the User's Guide.
[. . . ] Instruction Manual
HI 96716C Bromine ISM
www. hannainst. com
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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. Please read it carefully before using the meter. If you need additional technical information, do not hesitate to e-mail us at tech@hannainst. com.
TABLE OF CONTENTS
PRELIMINARY EXAMINATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] 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. DISPLAY ELEMENTS DESCRIPTION
5 4 3 9 2 1 10 6 7 8
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.
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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. · Place the instrument on a flat table. · 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. First, the meter is zeroed using the unreacted sample. After the reagents are added the reacted sample is measured. · Turn the meter on by pressing ON/OFF. The display briefly shows all tags on.
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· When the beeper sounds briefly and the LCD displays dashes, the meter is ready. [. . . ] If a valid measurement was displayed before auto-shut off, the value is displayed when the instrument is switched on. The blinking "ZERO" means that a new zero has to be performed. One fresh battery lasts for around 750 measurements, depending on the light level. The remaining battery capacity is evaluated at the instrument startup and after each measurement. [. . . ]
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