3 overview of display screen – Yokogawa IR200 User Manual
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5 - 3
IM 11G02M01-01E
5.3 Overview of display screen
(1) Measurement mode screen
On turning on the power switch, the Measurement Mode screen will appear.
The measurement screen depends on the number of components. The following screen configura-
tion shown as an example is for CO
2
, CO, O
2
(Output at channel 6).
When channel 5 or later is displayed, scroll
or
key to view another configuration which is
beyond the screen.
Fig. 5-3 Name and function of measurement mode screen
•
Instantaneous value and concentration value:
The concentration display of CH (component) where sampling components such as “CO
2
”,
“CO” or “O
2
are displayed in the component display, indicates current concentration values of
the measured components contained in gas that is now under measurement.
•
O
2
correction concentration value:
CH (components) where “cv**” is displayed as “cv CO” in the component display are calculated
from the following equation, by setting sampling components, O
2
instantaneous/concentration
values and O
2
correction reference value (see item 6.8).
Conversion output=
On:
The value of the O
2
correction referance value
(Value set by application)
Os:
Oxygen concentration (%)
Cs:
Concentration of relevant measured component
K:
The value of the fractional part is this equation.
where, K is When K
4, K=4. When K < 0, K=4.
When Cs < 0, K=0.
The correction components are CO and SO
2
only.
21 - On
21 - Os
×
Cs
K
5
6
7
8
1
2
3
4
No,
Name
Component
display
Function
Displays component of instanta-
neous value, converted instanta-
neous value, converted average
value, etc.
No,
Name
Description
Concentration
display
Displays measured value of
concentration.
Peak alarm
component
display
Displays peak alarm component.
Peak alarm
concentration
display
Displays peak alarm concentra-
tion (Upper limit value).
Range display
Displays range values.
Peak alarm
count
Displays the alarm times exceed-
ing the peak value.
Unit display
Displays unit with ppm and
vol%.
Peak alarm
unit display
Displays unit of peak alarm with
times/h.
1
2
3
4
5
6
7
8