Hanna Instruments HI 2550 - Manual (Page 12)

12
AUTO-RANGING AUTO-RANGING AUTO-RANGING AUTO-RANGING AUTO-RANGING
The EC and TDS scales are auto-ranging. The meter automatically sets
the scale with the highest possible resolution.
By pressing ALT&LOCK, the auto-ranging feature is disabled and the
current range is frozen on the LCD. The “Auto” “Off” (auto-ranging
disabled) tags will be displayed on the LCD for a few seconds. To restore
the auto-ranging option, press ALT&LOCK again. The “Auto” “On”
(auto-ranging enabled) tags will be displayed on the LCD for a few
seconds.
Note: Auto-ranging is automatically restored if the range is changed, if
the setup or calibration modes are entered and if the meter is
turned off and back on again.