sauermann E INSTRUMENTS 1500, Руководство по эксплуатации и техническому обслуживанию, Страница: 26 / 170

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9.2 Configuration→Analysis →
PARAMETER DESCRIPTION
Lets the user select the type of fuel to be used during analysis. This datum can be varied either
from this menu or during the analysis itself.
By selecting the sub menu Fuel coefficients the user can view the characteristics of the fuels
used in the calculation of performance. SEE SECTION 9.2.1.
The burner efficiency figure when condensation takes place is influenced by atmospheric
pressure and humidity of the combustion air. As the atmospheric pressure is hardly precisely
known, the operator is asked to enter a related parameter, i.e. the altitude of the place above the
sea level, from which the pressure is then derived once the dependency from atmospheric
conditions is neglected. In calculations the value of 101325 Pa is assumed as atmospheric
pressure at sea level. Further the air relative humidity input is allowed, being this calculated at
the combustion air temperature as measured from the instrument; in case this value is unknown
the operator is recommended to enter 50% for this value.
SEE SECTION 9.2.2.
In this mode the user can set the oxygen percentage level to which pollutant emission values
detected during analysis will be referenced.
SEE SECTION 9.2.3.
NOx/NO: all the nitrogen oxides which are present in the flue emissions (Nitrogen oxide = NO,
Nitrogen dioxide = NO
2
); total nitrogen oxides = NOx (NO + NO
2
).
In the combustion processes, it is found out that the NO
2
percentage contained in the gas is not
far from very low values (3%); hence it is possible to obtain the NOx value by a simple
calculation without using a direct measurement with a further NO
2
sensor.
The NO
2
percentage value contained in the gas can be however set at a value other than 3%
(default value).
SEE SECTION 9.2.4.
Through this submenu the user can modify the units of measurement for all the analysis
parameters, depending on how they are used.
SEE SECTION 9.2.5.
In this sub menu the user can change the length of the autozero cycle of the analyzer and start it
manually.
SEE SECTION 9.2.6.
In this sub menu the user can see the list of measurements that the device can perform. With
the interactive keys, the user can add, delete or move a selected measurement.
SEE SECTION 9.2.7.
In this submenu there is a possibility to acquire or manually enter the combustion air
temperature.
SEE SECTION 9.2.8.
KEY FUNCTION
Activate the context keys shown on the
display.
Returns to the previous screen.
CONTEXT KEY FUNCTION
Selects the available parameters.
Enters in the selected parameter setting.
Selects the available parameters.
OK
◄
►
Fuel
Condensation
O
2
reference
NO
x
/NO ratio
Measure units
Autozero
Measures list
15/01/14
10:00
Fuel
O
2
reference
Measure units
Measures list
Condensation
NO
x
/NO ratio
Autozero
Configuration
Analysis
Air temp.
Air temp.