Hanna Instruments HI 96741C Instruction Manual

10 11ERRORS AND WARNINGSThe instrument shows clear messages when erroneous condition appears. Messages are also displayedwhen the obtained values are outside expected range. The beeper is playing a beep on errors.a) on zero readingLight 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. Pleasecheck that the sample does not contain any debris.Inverted cuvettes: The sample and the zero cuvette are inverted.Zero: A zero reading was not taken. Follow the instructions ofthe measurement procedure for zeroing the meter.b) on sample readingDISPLAY ELEMENTS DESCRIPTION1) The measuring scheme (lamp, cuvette, detector), appears during different phases of zero orreading measurement2) Error messages and warnings3) The battery icon indicates the charge state of the battery4) The hourglass appears when an internal check is in progress5) Status messages6) The chronometer appears when the reaction timer is running7) The month, day and date icons appear when a date is displayed8) Four digit main display9) Measuring units10) Four digit secondary display10852973461