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• Instantaneous value and concentration value:
The concentration display of Ch (component) where sampling components such as "CO
"O
are displayed in the component display, indicates current concentration values of the measured
2
components contained in gas that is now under measurement.
• O
correction concentration values:
2
Ch components where "cv**" is displayed as "cv CO" in the component display are calculated from
the following equation, by setting sampling components, O
O
correction reference value.
2
Correction output=
The corrected sampling components is CO only.
• O
correction concentration average value:
2
In the Ch (component) where "
value obtained by averaging O
seconds.
Averaging time can be changed between 1 minute and 59 minutes or 1 hour and 4 hours accord-
ing to the average time settings.
(The set time is displayed as "1h," or instance, in the range display.)
Note) The measurement ranges of O
tration average value are the same as that of the measuring components.
• CP calculation value:
The carbon potential of carburizing furnace and conversion furnace are calculated using furnace
temperature (fixed input value) and CO concentration value (fixed or measured value) while
referring to CO
Calculation equation;
where,
CPS ; Saturated carbon concentration (partial pressure)
t
PCO ; CO concentration value (partial pressure)
PCO
K1
T
INZ-TN2ZSVS-E
21 - On
× Cs
21 - Os
CV
**" is displayed as "
AV
correction concentration value in a fixed time is output every 30
2
2
measured value.
2
CPS × (PCO)
CP=
K1 × PCO
0.0028t–1.30 (800˚C ≤ 850˚C)
0.0030t–1.47 (850˚C ≤ 950˚C)
0.0034t–1.85 (950˚C ≤ 1000˚C)
; Furnace temperature
; CO
concentration value (partial pressure)
2
2
(9.06–15966/T)
; Constant K1=10
; Rankine temperature
(t × 9/5+32+460)
instantaneous/concentration values and
2
On: The value of the O
(Value set by application)
Os: Oxygen concentration (%)
Cs: Concentration of relevant measured component.
Calculation is made with 20Vol% if Os is 20Vol%
or higher.
CV
CO" in the component display, a
AV
correction concentration value and O
2
2
- 11 -
," "CO" or
2
correction referance value
2
correction concen-
2
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