User manual HANNA INSTRUMENTS HI 95715

[. . . ] Instruction Manual HI 95715 Ammonia Medium Range ISM www. hannainst. com This Instrument is in Compliance with the CE Directives 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. This instrument is in compliance with directives. TABLE OF CONTENTS PRELIMINARY EXAMINATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] 3) the Month and Day icons appear above the number of month and day when a date is displayed. 4) the blinking "Battery" icon appears when the battery voltage is getting low. 8 GUIDE TO DISPLAY CODES This prompt appears for 1 second each time the instrument is turned on. This indicates that the meter is in a ready state and zeroing can be performed. This flashing prompt appears each time the meter is performing a measurement. This indicates that the meter is in a zeroed state and measurement can be performed. Light over range: the cuvet is not inserted correctly and an excess ambient light is reaching the detector. If the cover is properly installed, then contact your dealer or the nearest Hanna Customer Service Center. The blinking "BAT" indicates that the battery voltage is getting low and the battery needs to be replaced. "Configuration": this indicates that the meter has lost its configuration. CALIBRATION MODE MESSAGES The date of the last calibration appears on the LCD each time the calibration mode is entered. If calibration is performed for the first time, "F. CAL" appears. This indicates that the factory calibration is selected. 9 The flashing digits indicate that: 1) the month can be set 2) the day can be set "Storage": this prompt appears for 1 second at the end of the calibration procedure, to indicate that the calibration data has been stored. "Error": the concentration of the calibration solution used is not correct. Repeat the calibration procedure with the right standard solution, and verify it is not expired. If the calibration procedure fails again, contact your dealer or the nearest Hanna Customer Service Center. ERROR MESSAGES a) on zero reading This indicates that the zeroing procedure failed due to a low signalto-noise ratio. "Light Low": there is not enough light to perform a measurement. · Each time the cuvet is used, the cap must be tightened to the same degree. · Whenever the cuvet is placed into the measurement cell, it must be dry outside, and completely free of fingerprints, oil or dirt. Wipe it thoroughly with HI 731318 (tissue for wiping cuvets, see chapter ACCESSORIES) or a lint-free cloth prior to insertion. · Do not let the reacted sample stand too long after reagent is added, or accuracy will be lost. · It is possible to take multiple readings in a row, but it is recommended to take a new zero reading for each sample and to use the same cuvet for zeroing and measurement. [. . . ] In both cases the number of the month is blinking, ready for date input. Note: if the display shows "ERR" the calibration procedure failed. Verify that the CAL CHECK Standards HI 95715-11 Cuvets, A and B, are free from fingerprints or dirt and that they are inserted correctly. DATE INPUT · Keep READ/TIMER pressed to scroll to the desired month number (01-12). [. . . ]