22
Open air pump and reversing valve, clean optical path to facilitate fresh air’s (20.90% O
2
)
passing through oxygen sensor. When 2-minute countdown ends, save the current
voltage value of O
2
as the adjust value. Shut off air pump and valve, and O
2
ADJ ends.
" O
2
ADJ OK!.” will appear on the right bottom.
6.3 OIL T ADJ.
After being used for a period of time, OIL T ADJ. can be done when it is thought
necessary.
Select”3 : OIL T ADJ” via S in adjust menu. press E and the screen will display:
Select
L.T.
,
H.T ,
low STDT, high STDT and
ESC
via S.
Prepare a low temperature source (e.g. a cup with ice), one high temperature source (e.g.
cup with hot water of over 85 degree) and choose a thermometer with allowed error not
larger than ±0.5% FS to be a standard thermometer.
First, put OIL. T probe and standard thermometer into low temperature source at the same
time and reset the low temperature standard temperature according to thermometer after
indicating value stabilizes. Press S to select
L.T.
and E for adjusting low temperature
point.
Note: as the output of oxygen sensor is kind of drifting, O2 ADJ shall be done
regularly to ensure an accurate test of oxygen concentration.
OIL T ADJ
hh
：
mm
：
ss
gauge
Current
LOW
：
10.0
114.1
HIGHT
：
75.0
114.1
S:select
，
E : confirm
，∧∨
: modify
ESC
L.T.
H.T.
O
2
adjusting
，
wait
……
119
S: cancel
