Introduction:
The HydroLite® HL103 is a pocket-sized dissolved oxygen (DO) and temperature tester. This
manual provides instructions on use, with a step-by-step operating guide, as well as care and
maintenance instructions.
ACCESSORIES:
HydroLite® HL103 pocket DO tester
● Dissolved Oxygen Probe
● DO Electrolyte Solution
● DO Membrane Cap
● AAA Batteries
DO 0% Calibration Solution (60mL)
Keypad:
The HL103 pocket DO/temperature tester uses a simple three-button membrane keypad, with
graphical symbols to describe the function of each key.
INDEX:
KEY
FUNCTION
On/Off
Hold
● Powers the unit ON/OFF
● Freezes the currently displayed value for recording; press the key
again to resume measuring.
● When in calibration mode, exits calibration and returns to
measurement mode.
Cal
● Press the key to enter the calibration mode.
● Press and hold the key to enter setup menu.
● In the calibration mode, press the key to set calibration values.
● In the setup mode, press the key to select default option.
Enter
● Confirms the calibration or selected option.
