Autoranging - Hanna Instruments HI98192 Instruction Manual

The EC, Resistivity and TDS scales are autoranging. The meter automatically sets the scale with the
highest possible resolution.
By pressing Lock, the autoranging feature is disabled and the current range is frozen on the LCD.
The "Range: Locked" message is displayed. To restore the autoranging option press "AutoRng"
functional key again.
The autoranging mode is also disabled by selecting a fixed range in the SETUP menu. While in fixed
range mode the instrument will display the readings with the fixed resolution. A maximum of 6 digits
can be displayed. The top of the fixed range is displayed blinking when the reading exceeds this value.
To disable fixed range mode enter SETUP and select autoranging mode.
Note: Autoranging is automatically restored if the range is changed, if the calibration mode
is entered, or if the meter is turned off and back on again.
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