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to shift the cursor to the next position. When
none of the digit is blinking, key K2 is used
to execute the password.
2
CALIBRAT
MODE
After entering the correct password (0001),
LCD/OLED shows this prompt. It means now it is
in calibration mode. Use K2 to proceed
forward.
3
APPLY
ZERO- Gas
The unit enters in
“Zero
-
Cal” & display
prompts
to apply Zero-Gas or clean air free from the
target gas. LCD/OLED indicates 30 second down
count, this is the fixed time allotted for base
line or zero cal setting. After successful base
line setting, the LCD/OLED
will give “Ze
ro-Cal
Done” prompt. In case if the base line of the
sensor is not proper the Zero- Cal will fail &
unit
will show “Zero
-
Cal fail”
4
ENTER SPAN
GAS VALUE
=
XXX
After “Zero cal Done”
use K2 to ente
r in “Span
-
Cal” &
prompt will appear for the Span gas (or
calibration gas) value to enter (which is
available for the calibration of the unit).
On this prompt, by using key K2, span gas value
can be incremented / decremented. Key K1 is
used to toggle between increment/decrement
mode, this is indicated by blinking cursor at
the locations. If correct span gas value is
entered on pressing K1 further, the blinking
cursor disappears. Press K2 to accept the
entered value and proceed further and select
span time.
5
APPLY
SPAN- Gas
After entering the span gas value and time, the
unit prompts for applying the span gas.
LCD/OLED also shows the down count. After
successful span setting, LCD/OLED gives
“Span
-
Cal Done” prompt. In case if the span setting
of the sensor is not proper the Span- Cal fails
& unit
will show “Span
-
Cal failed”. If span cal
fails then the previous calibration data of the
sensor will be restored back and fresh attempt
of the sensor calibration need to be done.
On successful calibration, the calibration date
automatically gets updated.
