YOKOGAWA EXAxt ZR402G, Руководство пользователя

Страница: 106 / 169

<8. Detailed Data Setting>
8-19
IM 11M12A01-04E 11th Edition : Jul. 19, 2017-00
n
Procedure
Use the parameter code table below to set fuel values.
Table 8.17 Setting Fuel Values
Set item Parameter code Set value Engineering units
Amount of water vapor in exhaust gas F20 0 to 5 m
3
/kg (m
3
)
Theoretical amount of air F21 1 to 20 m
3
/kg (m
3
)
X value F22 0 to 19.99
Absolute humidity of the atmosphere F23 O to 1 kg/kg
n
Default Values
When the analyzer is delivered, or if data are initialized, parameter settings are by default, as
shown in Table 8.18.
Table 8.18 Default Settings of Fuel Values
Item Default setting
Amount of water vapor in exhaust gas 1.00 m
3
/kg (m
3
)
Theoretical amount of air 1.00 m
3
/kg (m
3
)
X value 1.00
Absolute humidity of the atmosphere 0.1000 kg/kg
8.6.4 Setting Measurement Gas Temperature and Pressure
The analyzer calculates the moisture content contained in exhaust gases and saturated water
vapors from the entered gas temperature and pressure to obtain the relative humidity and dew
point. Enter the exhaust gas temperature and pressure (absolute pressure) necessary for the
calculation (see Section 10.1 later in this manual).
NOTE
The critical temperature of the saturated water vapor pressure is 374°C. If a gas temperature
exceeding 370°C is entered, no correct calculation will be obtained.
n
Procedure
To set the gas temperature and pressure, follow the parameter code table for fuel setting.
If you set a value exceeding the setting ranges, an error, ERR will result.
Table 8.19 Fuel Setting Default Value
Set item Parameter code Set value Engineering units
Exhaust gas temperature F13 0 to 3000 °C
Exhaust gas pressure F14 0 to 300 kPa abs.