4
vol%
ppm
RANGE
SU
MEAS
CAL SET
ALH SET
HOLD
RMT RANGE AUTO CAL
TU TH
MO WE FR
SA
NO
vol%
ppm
RANGE
2
vol%
RANGE
O
2
SO
FUNC COMP
ENT ZERO SPAN
CAL
＞
∧
4 Day indication
5 Sub indication
6 Range changeover key
3 Unit indication lamp
2 Main indication
1 Component indication
7 Function indicator lamp
8 Function key
10
Digit shift key
11
Numeric input key
13
Zero calibration key
14
Span calibration key
15
Calibration start key
12
ENT key
9 Component selector key
(Three components of NO, SO
2
and O
2
are
indicated in this figure.)
2.2 Name and description of components on indication/operation panel
