Yokogawa Low Concentration (ppm) Zirconia Oxygen Analyzer OX400 - Manual (Page 45)

<6. Operation and Parameters>
6-8
IM 11M10B01-01E
6.1.8 Setting Output Smoothing “SMoo”
If the oxygen concentration of sample gas rapidly changes, and the measured value is used for
control, harmful results may occur such as frequent on and off switching.
In such a case, signal changes can be smoothed by giving an appropriate time constant and
performing calculation. Smoothing factor from 0 to 60 seconds can be set. When the output smoothing
is set, the smoothed value is an instantaneous value, which is displayed and output in analog form.
The smoothed value is also used as the instantaneous value for checking the concentration alarm and
for RS232 communication. The output smoothing is “non“ 0 second by default.
Operation:
Hold down the [MODE] key for 2 seconds, select “SMoo” with the [▲], [▼] keys,
and press the [ENT] key.
Figure 6.9 shows an example of setting the smoothing factor to 30 seconds.
SMoo SMoo
[ENT] [ENT]
SMoo 00 30
Entering 30 sec. of smoothing factor.
Enter “30” and
press the [ENT] key.
Return to “SMoo.”
MODE
Hold down
for 2 seconds.
Figure 6.9 Setting Smoothing Factor “SMoo”
6.1.9 Setting Multi-Selector “MLS”
This item is an option, so you do not need to set it unless you specified the option code “/MS.”
Operation: Hold down the [MODE] key for 2 seconds, select “MLS” with the [▲], [▼] keys, and
press the [ENT] key.
Set the relay contact to switch measurement flow for path. Up to three sampling flows can be
selected. Even though this setting is performed for an OX400 for which the option code “/MS” was not
specified, nothing will happen. Figure 6.10 shows a setting example (set measurement flow path 1 to
3). With respect to the usage example, see Section 6.5.
MLS
▼↓↑▲
MODE CAL
▼↓↑▲
▼↓↑▲
[ENT]
3
MLS
PPM
0
MLS
▼↓↑▲
▼↓↑▲
▼↓↑▲
[ENT]
0
MLS
PPM
[ENT]
▼↓↑▲
▼↓↑▲
% %
To “rEV”
Hold down
for 2 seconds. To “0”
0 is confirmed.
Return to “MLS.”
To “3”
Figure 6.10 Setting Multi-Selector “MLS”
6.1.10 Checking Calibration Coefficient “CoEF”
This item is for checking the sensor state and is not a setting.
Operation: Hold down the [MODE] key for 2 seconds, select “CoEF” with the [▲], [▼] keys,