13
No
x
is determined by the NO measured concentration plus the NO
2
factor on the FT1300-1.
*No
2
factor is menu entered percentage. The units of concentration are SET in the SETUP> SYS-
TEM, MENU.
Note: NO
x
is “NOT” available on FT1200-1, or FT1200-2A since the NO cell is
not available for these models.
Fuel Efficiency:
This is displayed as a% and indicates how efficient the burner system operates with
the fuel being burnt. This calculation is performed within the instrument and is determined by vari-
ous factors including: maximum amount of CO
2
in a given fuel; K1 and K2 factors; Vo (dry)/Ao and
the F factor. Each fuel has pre-determined characteristics which have been pre-programmed into the
Firetron 1000. Where user defined fuels are used these factors may be changed in the SETUP
MENU.
A Fuel Type Must be selected in order for the analyzer to calculate values.
SETUP> Fuel Type.
NOTE: Fuel 1, 2, 3 and 4 are user defined - By selecting these fuels you must first
enter values under FUEL DATA. Otherwise, all calculated values derived by for-
mulas will not calculate correctly.
Loss:
The loss indicates the inefficiency of the burners and is displayed as a percentage.
Excess Air:
This indicates the amount of air not being burnt in the process. This calculation is per-
formed by the instrument and is determined as with Fuel Efficiency, by the use of various factors.
T_Ambient:
The probe has in-built ambient temperature sensors. The units i.e °C/°F can be changed
in the Setup menu.
T_Gas:
The probe has a type K thermocouple which when inserted into the flue gas can determine
the exact temperature of the gas. The units i.e °C/°F can be changed in the SETUP/SYSTEM
MENU.
Tg - Ta:
A calculation of the temperature rise in the combustion process. The units, i.e °C/°F can be
changed in the SETUP/SYSTEM MENU.
O
2
Normalization:
To comply with certain environmental legislation, readings of flue gases are
required to be given in relationship to a specific oxygen content (normalization).
Oxygen normalization may be selected through the Setup menu. The Oxygen normalization factor
may be entered as a percentage through this same menu option.
The formula for Oxygen normalization is:
Go = G (20.9 - 0c)
(20.9 - 0a)
where
Go = normalized gas readings
G = gas reading
Oc = O
2
normalization factor (%)
Oa= O
2
reading (%)
MENU
F1
F2
F3
F4
FLOW
GO
DRY
T. AMBIENT
T - GAS
TG - TA
XXX
°
ppm
ENTER: NEXT SCREEN
FLUE TEMP.: 28
°
C