Xylem WEDECO SMOevo PLUS Series Original Manual page 103

Production Mode
In concentration or gas flow controlled systems, it must always be decided which parameter
should be the constant setpoint and which the variable parameter. The setpoint highlighted in
gray is always the calculated value (variable).
Constant
Concentration /
Variable Gas Flow
Constant Gas Flow /
Variable
Concentration
Example calculations:
Variable Gas Flos
49.02 Nm³/h
39.22 Nm³/h
Variable Concentration
148.0 g/Nm³h
118.3 g/Nm³
Required Ozone Mass
The Required Ozone Mass is displayed as follows:
SP Setpoint in g/h, according to the design data oft he system.
PV Actual value in g/h, showing the actual Process Value in g/h.
Calculation
In the calculation, the required ozone mass is divided by the constant setpoint (green). The
result is the variable parameter (gray) that must be set to produce the required ozone mass.
Formula See calculation basis.
SP Setpoint in g/Nm³, Nm³/h.
Gray highlighted value = calculated value or correction value
Green highlighted value = default setpoint
PV Actual value in g/Nm³, Nm³/h, showing the actual Process Value.
Manual_SMOevoPLUS_eng_01.2019.doc
Manual Ozone Generating System SMOevo
The ozone concentration is the constant setpoint:
Depending on the required ozone mass, the gas flow is
changed variably.
The gas flow is the constant setpoint:
depending on the required ozone mass, the ozone
concentration is changed variably.
= Required Ozone Mass /
= 5000 g/h
= 4000 g/h
= Required Ozone Mass /
= 5000 g/h
= 4000 g/h
Constant Concentration
/ 102.0 g/Nm³
/ 102.0 g/Nm³
Constant Gas Flow
/ 33.8 Nm³/h
/ 33.8 Nm³/h
PLUS
Operation
page 103 of 179