7 - 7
(4) Operate the optical zero adjustment
knob to change the value displayed at
ⓐ
(or
ⓔ
).
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sideview to change the value displayed
at
ⓑ
(or
ⓕ
).
0RYHWKHEHDPDGMXVWPHQWSODWHVLGH
-
wise to change the value displayed at
ⓒ
(or
ⓖ
).
0RYHWKHEHDPDGMXVWPHQWSODWHVLGH
-
wise to change the value displayed at
ⓓ
(or
ⓗ
).
5HSHDWWKHSURFHGXUHVLQWRWR
make all the displayed values come
close to 0 as possible within ±100
range.
* Adjust the beam adjustment plate
which is the nearest to the zero
DGMXVWPHQWNQRE¿UVWDQGVHTXHQ
-
tially.
Optical zero adjustment knob
Optical system 2
Optical
system 1
Detector set bolt
Beam adjustment plate
7.3.4 Moisture interference compensation adjustment method
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$GMXVWRQWKHSULPDU\VLGHRIWKHRSWLFDOV\VWHPVRWKDWWKHYDOXHVIRU
ⓐ
to
ⓓ
in 1-1 and
1-2 become as close to 0 as possible within ±100 range.
$GMXVWRQWKHVHFRQGDU\VLGHRIWKHRSWLFDOV\VWHPVRWKDWWKHYDOXHVIRU
ⓔ
to
ⓗ
in 2-1 and
2-2 become as close to 0 as possible
within ±100 range.
$IWHUWKHRSWLFDOEDODQFHDGMXVWPHQWPRXQWWKHWRSFRYHURIWKHDQDO\]HUXQLWWKHQFDUU\RXW
a moisture interference compensation adjustment, and perform zero and span calibrations.
* Before moving the beam adjustment plate, loosen the detector set bolts (just enough
to make the plate movable for snug adjustment).
N
2
or air
Bubbler
Water
Electronic
cooler
(set dew point to 2 C)
Proceed to an adjustment if excessively (beyond
)6DIIHFWHGE\PRLVWXUHLQWHIHUHQFH
After the end of optical balance adjustment, be
sure to carry out moisture inteference compen-
sation adjustment.
(1) After warm-up, select the low range, allow
dry gas (N
2
DLU WR ÀRZ DW /PLQ DQG
carry out zero calibration.
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
