UEi Test Instruments KM940 - Manual (Page 30)

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APPENDICES
A - Main Display Parameters
The parameters and their meanings are detailed as follows : -
DATE :
Analyser date. See Set-Up menu section 5.2.5 to change.
TIME :
Analyser time. Use Set-Up menu section 5.2.5 to change.
BATTERY :
Displays the battery level from 0-100%. The analyser will flash
(BAT) RECHARGE BATTERY at less than 10 % of charge. With the charger
connected the display shows AC ON.
NETT :
Nett temperature calculated by deducting the internal AMBIENT
temperature
( ∆T) from the measured FLUE temperature. Displays in either °C (C) or °F (F)
and will display NOT FITTED (N/F) if flue probe is not connected.
If an external INLET probe is used then INLET is deducted from FLUE.
O2 :
Oxygen reading in percentage %.
CO :
Carbon Monoxide reading indicated in ppm or mg/m3. If the figures are
referenced to oxygen then the display will show CO(n). See SELECT menu
5.2.2 for oxygen reference. The display will read
‘O2 > 20%’ if referenced values selected and instrument is in clean ambient
air.
EFF (G) :
Combustion Efficiency calculation displayed in percentage. Gross G or Net
N can be set see SELECT menu 5.2.3. The calculation is determined by fuel
type see Appendix B for calculation. The efficiency is displayed during a
combustion test, ‘- -’ is displayed while in fresh air.
CO2 :
Carbon Dioxide calculation determined by the type of fuel. This only shows
a reading when a combustion test is being carried out. ‘- -’ is displayed
while in fresh air.
FLUE :
Temperature measured by flue gas probe in Centigrade or
(Tf) Fahrenheit. Will show ambient temperature after fresh air calibration and
NOT FITTED (N/F) or FAULT (FLT) if probe disconnected.
INLET :
Temperature measured by the optional inlet air probe. This probe is (Ti)
plugged into the instrument through the RS232 socket. This figure is
used to calculate the NET temperature instead of AMBIENT when
fitted.
AMBIENT :
Temperature measured by the internal sensor, used in the NET