QMI 1000, Manual

Page: 33 / 36

QMI 1000
manual Page 33
Appendix 1 - Main Parameter:
Here are the legends used and what they mean:
O
2
: Oxygen (Calculated) reading in percentage (%)
CO:
Carbon monoxide reading displayed in ppm (parts per million). ‘ -
- -’ is displayed if 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. This is only displayed when a combustion test is
being carried out. ‘
-O>- ’ is displayed while in fresh air.
T F: Temperature measured by the flue gas probe in centigrade (
o
C). It
displays ‘ - OC -’ if the flue probe is disconnected.
T I:
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, ‘
-O>- ’ is displayed while in
fresh air.
Loss : Losses calculated from oxygen and type of fuel. Displays reading
during a combustion test. ‘
-O>- ’ is displayed while in fresh air.