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Appendix 1 - Main Parameter:
Here are the legends used and what they mean:
O
2
:
Oxygen (Calculated) reading in percentage (%)
CO :
Carbon monoxide (Measured) reading displayed in ppm (parts per
million). If ‘- - - -’
is displayed there is a fault with the CO sensor or the
instrument has not set to zero correctly. Switch off instrument and try
again.
CO
2
:
Carbon dioxide (Measured) reading in percentage (%).
TF :
Temperature measured by the flue gas probe in centigrade (
o
C). It
displays ‘
- OC -’
if the flue probe is disconnected or faulty.
TI :
If an inlet temperature probe (optional) is connected into the T2 socket
during its countdown, the measured temperature from the inlet probe
will be used as the inlet temperature.
If an inlet temperature probe is not connected to the analyser during
countdown the measured temperature from the flue probe will be used
as the inlet temperature.
If neither probe is connected during countdown the analyser’s internal
ambient temperature will be used as the inlet temperature.
T Nett :
Nett temperature calculated by deducting the
INLET
temperature from
the measured
FLUE
temperature. It displays ‘
- OC -
’ if the flue probe
is not connected or broken.
EFF :
Combustion efficiency calculation displayed in percentage either as
Gross Ef(G) or Nett Ef(N) or Condensing Nett Ef(C) - Use
MENU
to
change. The calculation is determined by fuel type and uses the
calculation in British Standard BS845. The efficiency is displayed
during a combustion test, ‘- - - -’ is displayed while in fresh air.
Loss :
Losses calculated from oxygen and type of fuel. Displays reading
during a combustion test. ‘- - - -’ is displayed while in fresh air.
X - AIR :
Excess air calculated from the calculated oxygen and type of fuel.
Displays reading during a combustion test. ‘- - - -’ is displayed while in
fresh air.
CO/CO
2
:
CO/CO
2
Ratio: measured CO (ppm) divided by (CO
2
(%) x 10,000).
PRS :
Pressure reading, either single point or differential.
