Seitron CHEMIST 600 - Page 194

194
K600000000SE 030804 011018
MEASURE DEFINITION
ηt (HHV)
Total efficiency in relation to the Higher Heating Value:
Total efficiency. It is the sum of sensible efficiency and condensation efficiency. It is re-
ferred to HHV (Higher Heating Value) and can not exceed 100%.
Qt (HHV)
Total stack losses:
It is the total heat percentage dissipated through the stack.
NOx
Measure of nitrogen oxides quantity; the measurement unit can be set in the special
menu.
NOx ppm *
Measure of nitrogen oxides quantity; the measurement unit can not be set but it is fixed in
ppm.
NOx (rif. O2)
Measure of nitrogen oxides quantity referring to O2; the measurement unit can be set in
the special menu.
NOx (rif. O2) ppm *
Measure of nitrogen oxides quantity referring to O2; the measurement unit can not be set
but it is fixed in ppm.
PI
Poison Index (CO/CO2 ratio):
It is defined as the ratio between CO and CO2 useful to determine whether the system
needs maintenance.
CO
CO quantity measurement. Measurement units: ppm - mg/m
3
- mg/kWh - g/GJ - g/m
3
-
mg/kWh - % - ng/J
CO (RIF)
CO quantity measurement with O2 reference. Measurement units: ppm - mg/m
3
- mg/kWh
- g/GJ - g/m
3
- g/kWh - % - ng/J
CO amb. ext.
Measure of the outer CO level when using the external CO probe.
Measurement unit: ppm. This is the only measurement unit which is possible to set.
* : Valid for Piemonte region only (Italy only).
OTHER THAN THE MEASUREMENT LIST ABOVE, IT IS POSSIBLE TO VISUALIZE THE
MEASURE OF THE DETECTED GAS ALSO IN PPM, DEPENDING ON THE KIND OF
MEASUREMENT CELL IN THE INSTRUMENT. IF IT IS NECESSARY TO MEASURE THE
VALUE OF GAS WITH TWO DIFFERENT MEASUREMENT UNITS, SELECT IN THE
MEASUREMENTS LIST THE DESIRED GAS IN PPM AND CHANGE THE MEASUREMENT
UNIT FOR THE SAME GAS IN THE “CONFIGURATION->ANALYSIS->MEASUREMENT UNIT”
SCREEN. NOW THE INSTRUMENT ACQUIRES THE MEASURE WITH TWO DIFFERENT UNITS
(PPM AND THE ONE PREVIOUSLY SET)