Function block inputs

[fn] Stoichiometric constants

This parameter specifies where the function block obtains the stoichiometric constants which are required for the calculation.

If a fuel is specified as source, the values from the standard configuration are used.

The function block performs the calculation if the selected fuel is used in single operation.

0	Individual values
1	Fuel 1
2	Fuel 2
3	Fuel 3

[O2,w] Wet oxygen content [Vol.-%]

Analog channel

[A,w] Stoichiometric moist exhaust gas amount [m³/m³ (at STP)] / [m³/kg (at STP)]

Fixed value

Fuel	Constant
Light oil	11.8
Heavy fuel oil	11.4
Natural gas L	9.36
Natural gas H	10.47

[A,dry] Stoichiometric dry exhaust gas quantity [m³/m³ (at STP)] / [m³/kg (at STP)]

Fixed value

Fuel	Constant
Light oil	10.3
Heavy fuel oil	10.0
Natural gas L	7.64
Natural gas H	8.53

[En] External release

Digital channel

Function block outputs

[O2,dry] Dry oxygen content [Vol.-%]

O2,dry = O2,w / (1 - ((A,w - A,t) / ((O2,w / (21 - O2,w)) x A,w + A,w )))