Power On/Off:
● Press ON/OFF key to turn on the unit, the display shows measured value.
● Press and hold the ON/OFF key for 5 seconds, the unit will turn off.
● If no key is pressed for 8 minutes, the unit will automatically turn off to conserve power.
Note: The auto-off function can be disabled if required
– see below for further details
Setup Menu
The HL103 pocket DO/temperature tester includes a comprehensive setup menu with
customisable options to suit user measurement requirements.
PARAMETER
DESCRIPTION
OPTIONS
DESCRIPTION
DEFAULT
Salinity Coefficient
Setting Range: 0 to
35ppt
0.0
Atmospheric
Pressure
Coefficient
Setting Range: 450 to
850mmHg
760
Calibration Point
1 point
●
2 points
Measurement Unit
mg/L
Concentration Unit
●
ppm
Concentration Unit
%
% saturation
Degrees Celsius
●
Degrees Fahrenheit
Temperature
Calibration
Enters the temperature
calibration mode
Auto-Hold
Automatically freezes a
stable reading
Disable
●
Auto-Off
Automatically turn off
the tester
●
Disable
Reset
Restore factory settings
Disable
●
