Hanna Instruments HI 9828 Instruction Manual

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Hanna Instruments HI 9828 Instruction Manual Manual pdf 15 page image

171.7 POWER CONSUMPTIONFor firmware versions before 2.0, the meter never features the GPS unit andthe battery life does not depend on logging interval or logging state:• supplied rechargeable batteries (full charge): approximately 70 hours ofcontinuous use, without backlight• alkaline batteries: approx. 150 hours of continuous use, without backlightFor firmware version 2.0 and subsequents, see below table: to find out thebattery life, make a crossing between GPS use and logging interval.All values refer to meter working without LCD backlight, and using the suppliedrechargeable batteries (completely charged).If using the device in normal measuring mode with the backlight always on andno GPS, the battery life will be approximately 80 hours with rechargeable batter-ies and 160 hours with alkaline batteries.Logging interval No GPS GPS ON and GPS ON and“GPS power save” “GPS power save”enabled disabledLog-on-demand 7 days 30 hours 30 hoursor 1 second1 minute 9 days 30 hours 30 hours2 minutes 10 days 30 hours 30 hours4 minutes 10 days 2 days 30 hours10 minutes 11 days 4 days 30 hours20 minutes 11 days 6 days 30 hours30 minutes 11 days 7 days 30 hoursNotes• “No GPS” means: model without GPS, GPS unit always OFF or OFF after the firstsample (see “Logging Mode” chapter for details).• All data in the table have to be doubled if using alkaline batteries.