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3.2
Key Operation
Short press: key press time < 2 s;
Long press: key press time> 2 s.
Power on: Press to turn on. Shutdown: long press 2 seconds off.
First time use: see parameter setting P4.7 & P4.8 to set correct date and time
(as Clause 8.3)
Special notes: Before getting readings or performing other operations, wait about 30
seconds after meter is powered on.
Table - 1 Key operation and functions
Key
Operation
Functions
Short
Press
⚫
When powered off, press the key to power on
⚫
In measurement mode: press to turn backlight on or off
Long Press
⚫
Press and hold for 2 seconds to turn off
Short
Press
⚫
In measurement mode: press the key to switch unit:
%→mg/L or %→ppm
Long Press
⚫
In the measurement mode:
press the key for 2 seconds to enter the calibration mode
Short
Press
⚫
T
o cancel any operation, press to return to measurement mode
Short
Press
⚫
In measurement mode: press to enter menu mode;
⚫
In calibration mode: press key to calibrate;
⚫
In the menu mode: press key to confirm the parameter.
Short
Press or
Long Press
⚫
In measurement mode: press to change the serial number or
press to recall the measurement value.
⚫
In recall mode (RM), short press to change serial number of stored
measurement value, or long press to conduct rapidly change;
⚫
In the menu mode: press the key to change the serial number or
select the parameter
Fig.-2