Operational Guide; Initial Preparation; Measurements - Hanna Instruments HI98192 Instruction Manual

INITIAL PREPARATION

The instrument is supplied complete with batteries. See Batteries Replacement for details, page 63.
To prepare the instrument for field measurements close the serial communication socket with proper
stopper (to ensure waterproof protection).
Connect the EC probe to the DIN connector on the top of the instrument. Tighten the thread ring. Make
sure the probe sleeve is properly inserted.
Turn the instrument ON by pressing ON/OFF key.
At start‑up the display will show the Hanna logo for a few seconds followed by the percentage indication
of the remaining battery life and the "Loading Log..." message, then enters the measurement mode.
The Auto Power Off feature turns the instrument off after a set period (default 30 min) with no button
pressed to save battery life. To set another period or to disable this feature, see SETUP menu on
page 35. The instrument continues to monitor the inputs and memorize readings if the automatic
logging is enabled and started. To stop autologging press StopLog key or simply power off the
instrument by pressing the ON/OFF key.
The Auto Light Off backlight feature turns the backlight off after a set period (default 1 min) with
no buttons pressed. To set another period or to disable this feature, see SETUP menu on page 35.

MEASUREMENTS

Immerse the probe into the solution to be tested. The sleeve holes must be completely submerged. Tap
the probe repeatedly to remove any air bubbles that may be trapped inside the sleeve.
If needed, press RANGE repeatedly until the desired range (EC, Resistivity, TDS, Salinity) is selected
on the LCD.
Allow for the reading to stabilize. The main LCD line displays the measurement in the selected range,
while the temperature is displayed on the lower LCD line.
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