Hanna Instruments HI 96753C Instruction Manual

Also see for HI 96753C: Instruction manual

Contents

Hanna Instruments HI 96753C Instruction Manual Manual pdf 5 page image

8 9ERRORS AND WARNINGSKEYPAD DESCRIPTION• ON/OFF: to turn the meter on and off.• ZERO/CFM: to zero the meter prior to measurement, to confirm edited values or to confirmfactory calibration restore.• READ/ /TIMER: this is a multi-functional key. Inmeasurement mode, press to make ameasurement, or press and hold for three seconds to start a pre-programmed countdown priorto measurement. InGLP mode press to view the next screen.• CAL CHECK: this is a bi-functional key. Just press to perform the validation of the meter, orpress and hold for three seconds to entercalibration mode.• GLP/ : this is a bi-functional key. Just press to enterGLP mode. Incalibration mode pressto edit the date and time.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 ofuser calibration date or restore factory calibration.DISPLAY ELEMENTS DESCRIPTION1) The measuring scheme (lamp, cuvette, detector), appears during different phases of zero orreading measurement2) Error messages and warnings3) The battery icon shows the charging level of the battery4) The hourglass appears when an internal checking 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 displayThe 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 reading