Hanna Instruments HI 98360 - Manual (Page 9)

9
Notes: • If the reading is out of range, the full scale value will be
displayed blinking.
• If the reading is not stable, the instability indicator “ ” will
be on.
• Make sure the meter is calibrated before taking measurements.
• If measurements are taken successively in different samples, it
is recommended to rinse the probe thoroughly with deionized
water before immersion in the samples. If possible rinse with
sample also.
• To maximize battery life, the meter is automatically switched
off after a set period of non-use. To reactivate the instrument
press the
On/Off key. This feature can be disabled (see
SETUP section for details).
• TDS reading is obtained multiplying the EC reading by the
TDS factor, which has a default value of 0.50. It is possible to
change the TDS factor in the 0.40 to 0.80 (see SETUP
section). Always set the reference temperature to 25°C when
measuring TDS.
• When the use of an alternate function is requested, press the
2nd key.
BACKLIGHT FEATURE
The instrument is provided with a Backlight feature to
enhance display readability in low light conditions. It
can be easily toggled on and off through the keypad by
pressing
Light.
Note: The backlight automatically shuts off after a set time period to
save battery life (see SETUP for details, page 18).
If battery percentage is less than 20% the backlight can not be ON.
The EC and TDS scales are auto-ranging. The meter automatically sets
the scale with the highest possible resolution.
By pressing
2nd then Lock, the auto-ranging feature is disabled and
the current range is frozen on the LCD. The “ MEASURE” tag is displayed
blinking.
To restore the auto-ranging option press
2nd then Lock again.
Note: Auto-ranging is automatically restored if the Range or 2nd then
Lock keys are pressed, if the setup or calibration modes are
entered and if the meter is turned off and back on again.
• If 2nd then Lock was pressed to freeze the LCD range and the
reading goes out of range, the full-scale value of the frozen range will
be displayed blinking.
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