23
press
enter into P5 mode, shown as picture (6-5);
(b) Press
or
key constant coefficient of change,long press these two settings
can be changed quickly,press
key determine the current set value.
(c) Press
key to enter into the next parameter setting or press
key return
to measuring mode.
6.5.7. Selection of datum temperature (P6)
(a) Under P5 mode to press
key choose P6
，
press
enter into P6 mode, shown as picture (6-6);
(b) Press
or
key to choose datum temperature
three options:25
℃
, 20
℃
,18
℃
;
Press the
key to determine the current selection
(c) Press
key to enter into next parameter setting or press
key to confirm
and return to measuring mode.
6.5.8. Selection of temperature units
℃/ ℉
(P7)
(a) Under P6 mode to press
key choose P7
，
press
enter into P7 mode, shown as picture (6-7);
(b) Press
or
key to choose temperature units
℃/ ℉;
Press the
key to determine the current selection
(c) Press
key to enter into next parameter setting or press
key to conform
and return to measuring mode.
6.5.9.Back light display time setting (P8)
(a) Under P7 mode to press
key choose P8
，
press
enter into P8 mode, shown as picture (6-8);
(b) Press
or
key to choose the time of automatic back lighting,press
key
determine the current set value.
