Fuji Electric ZKJ Series - Page 88

7 - 6
7.3.3 Optical zero adjustment method (optical balance adjustment)
The adjustment is performed at reassembly after removing the sample cell, etc. for cleaning, etc.
(1) Remove the top cover. Allow dry N
2
RUDLUWRÀRZWKURXJKWKHDQDO\]HUXQLW
sample gas inlet until the reading sta-
bilizes. The sample gas is introduced
GLUHFWO\WRWKH,1/(7RIDQDO\]HUXQLW
through the gas cylinder.
(2) Proceed to an optical adjustment in the
maintenance mode. The display on the
operation panel of the main unit is as
illustrated on the right. Balance adjust-
PHQWLVQRWUHTXLUHGLIWKHGLVSOD\IDOOV
within ±100.
Piping at optical balance adjustment
Short
Open
Introduce directly from cylinder
(not required
for measuring
unit 1 only)
Optical system 2
(measuring unit 2)
Optical system 1
(measuring unit 1)
No. of components to be measured
1-component analyzer
2-component analyzer
a
Main
NO/SO
2
CO2/CO
NO/CO
CO2 Main
NO Main
* O2 is excluded from the number of components.
* “Main” is signal input value from the main detector of each component.
“Comp” is signal input value from interference compensation detector of each component.
If low range exceeds the range of 0 to 10vol%, detector signal of “comp” is not usable.
b
Comp
CO
2 Comp
NO Comp
c
–
CO Main
SO
2 Main
d
–
CO Comp
SO
2 Comp
e
–
–
–
f
–
–
–
g
–
–
–
h
–
–
–
NO Main NO Comp – –
CO Main CO Comp––
N2O/CO2
N2O Main N2O Comp – –––CO2 Main –
3-component analyzer
4-component analyzer
NO/SO
2/CO
NO/N
2O/CO2
SO2/N2O/CO2
NO Main
NO Main
NO Comp
NO Comp
–
SO
2 Main
–
SO2 Comp
N
2O Main
CO Main
N2O Comp
CO Comp
CO2 Main
–
–
–
SO
2 Main SO2 Comp CO2 Main –N2O Main N2O Comp––
N
2O/CO2/CO
N
2O Main N2O Comp – –CO Main CO CompCO2 Main –
CH4/N2O/CO2
CH4 Main CH4 Comp CO2 Main –N2O Main N2O Comp––
NO/SO2/CO2/CO
NO Main NO Comp CO Main CO CompCO
2 Main –SO2 Main SO2 Comp
NO/SO2/N2O/CO2
NO Main NO Comp CO2 Main –N2O Main N2O CompSO2 Main SO2 Comp
Sensor values of which are not included in measuring components should be ignored.
<Correspondence between measurement detector and indicated position>
a
b
c
d
e
f
g
h
If the following operation is maladjusted, the measurement may adversely be affected. If you are
not trained for adjustment, do not carry out this operation but contact the distributor or our service-
man.
CAUTION
~--~/'\~----~
Maintenance ENT:Zero Valve ON
Optical Ad j. ESC:Back
49 2 '1
1-1 2-1
50
-1
21
-40
2-2
27
-10
r.::
Zero valve Open
0 0 0 0 0 0 0 0