User manual HANNA INSTRUMENTS HI 95711

[. . . ] Instruction Manual HI 95711C Free & Total Chlorine ISM MAN95711R3 05/06 w w w . h a n n a i n s t . c o m www. hannainst. com This Instrument is in Compliance with the CE Directives 24 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. 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. [. . . ] In both cases the number of the month is blinking, ready for date input. Note: if display will show "ERR" the calibration procedure failed. It is recommended not to touch the cuvet walls with hands. Furthermore, in order to maintain the same conditions during the zeroing and the measuring phases, it is necessary to close the cuvet to prevent any contamination. FUNCTIONAL DESCRIPTION 1) 2) 3) 4) 5) 6) 7) Liquid Crystal Display Cuvet Holder Cuvet alignment indicator ON/OFF key ZERO/SET key READ/TIMER key CAL CHECK key or 18 7 KEYPAD DESCRIPTION · ON/OFF: to turn the meter on and off. · ZERO/SET: this is a bi-functional key: press to zero the meter prior to measurement, or hold the key for 3 seconds to select the desired parameter (Free or Total Chlorine). · READ/TIMER: this is a bi-functional key, just press for making a measurement, or hold the key for 3 seconds to start a pre-programmed countdown prior to measurement. · CAL CHECK: this bi-functional key allows to perform validation of the instrument just pressing the CAL CHECK key, or hold the key for 3 seconds to enter the 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" icon appears), it enables calibration of the instrument. DISPLAY ELEMENTS DESCRIPTION CALIBRATION PROCEDURE Note: It is possible to interrupt calibration procedure at any time by pressing ON/OFF. Warning: do not validate or calibrate the instrument with standard solutions other than the Hanna CAL CHECKTM Standards, otherwise erroneous results will be obtained. CALIBRATION PROCEDURE · Select the parameter code for free chlorine "701" ot total chlorine "711" by holding ZERO/SET (see pag. · Enter the calibration mode by holding CAL CHECK for three seconds. · The date of the last calibration appears (e. g. : month "01", day "08"). "F. CAL" means that the factory calibration is selected. Note: at this point it is possible to reset the instrument to restore FACTORY CALIBRATION, see instructions page 19. · Place the CAL CHECKTM Standard Cuvet A into the holder and ensure that the notch on the cap is positioned securely into the groove. or 1) 2) 3) 4) four digit main display area. CAL: appears when the instrument operates in the calibration mode. the Month and Day icons appear above the number of month and day when a date is displayed. the blinking "Battery" icon appears when the battery voltage is getting low. · Press ZERO and "SIP" will blink on the display. · After a few seconds the display will show "-0. 0-". The meter is now zeroed and ready for calibration. [. . . ] 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 cuvet for reference (zero) and measurement. A flashing value of the maximum concentration indicates an over range condition. The concentration of the sample is beyond the programmed range: dilute the sample and re-run the test. [. . . ]