Yokogawa Low Concentration (ppm) Zirconia Oxygen Analyzer OX400 - Manual (Page 48)

<6. Operation and Parameters>
6-11
IM 11M10B01-01E
calibration. However, there are the following limits to the O
2
concentration. Be sure to perform
calibration in that range of the O
2
concentration.
O
2
concentration limits: 0.9 ppm or more and 12% or less, or between 35% and 100%.
4) Air calibration “AIR”
This is air-only calibration. Ues the cleanest air possible to perform calibration.
NOTE: If you press the [MODE] key during calibration to exit the calibration mode, that calibration
becomes invalid.
If an error occurs during calibration, the ERR/ALM lamp turns on, and an error/alarm code is displayed
on the sub-display. That calibration may become invalid depending on the error factor.
Figure 6.14 shows the calibration method (including the calibration gas concentration setting). With
respect to the input method of a numerical value, decimal point, and unit, see Section 6.6.
C AL
AIIR
CAL
[ENT]
ALL
CAL
[ENT]
AIR
PPM
[ENT]
20.60
OK
PPM [ENT]
1 0.38
10.00
PPM [ENT]
10.38
PPM
[ENT]
[ENT]
0 989
1000
PPM
[ENT]
1001
989
PPM
AIR
PPM [ENT]
AIR
PPM
[ENT]
[ENT]
1Pnt
CAL
[ENT]
5 0.25
1Pnt
PPM [ENT]
50.25
PPM [ENT]
50.25
OK
PPM [ENT]
2Pnt
CAL
[ENT]
1 0.00
ZEro
PPM
[ENT]
10.24
PPM
[ENT]
9 0.25
SPAn
PPM
[ENT]
90.18
90.25
PPM
[ENT]
90.25
OK
PPM
[ENT]
M O D E
OK
[ENT]
PPM
50.07
10.00
20.78
10.21
20.60 20.95
20.60
%
%
%
%
%
% % %
% % %
%
% % %
% %
Hold down
for 2 seconds.
If an error occurs, and “ERR” appears in the sub-display,
calibration may be not accepted.
Execute 1-point calibration
Execute 2-point calibration
Execute Air calibration
Execute 3-point (All) calibration
To “ALL”
Enter the gas concentration
at any calibration point.
Enter the numerical value,
decimal point, and unit.
Enter the numerical value,
decimal point, and unit.
Enter the numerical value,
decimal point, and unit.
Wait for stabilization after
sampling calibration gas.
Display the gas
concentration at the calibration point.
Calibration successful
Return to “CAL.”
Enter the gas concentration at zero point.
Wait for stabilization after
sampling zero gas.
Display the gas
concentration at zero point.
Enter the gas concentration at span point.
Wait for stabilization
after sampling span gas.
Display the gas
concentration at span point.
Calibration successful.
Return to “CAL.”
Wait for stabilization
after sampling air. Calibration successful
Return to “CAL”
Enter the 10-ppm
gas concentration.
Enter the 1000-ppm
gas concentration.
Enter the numerical value only. Enter the numerical value only.
Wait for stabilization
after sampling
10-ppm gas.
Wait for stabilization
after sampling
1000-ppm gas.
Display the
10-ppm gas concentration.
Display the
1000-ppm gas
concentration.
Return to “CAL.”
Check the air concentration
(setting is not needed).
Wait for stabilization
after sampling air.
Calibration successful.
(Note) If an error occurs during calibration, that calibration may become invalid. With respect to the action
in the event of an error, see Section 7.2.
To “1Pnt”
Figure 6.14 Calibration “CAL”