8
DISPLAY PARAMETERS
Here are the legends used and what they mean:
BAT:
Displays the Battery power available . Readings may be affected if used with low power batteries .
CAL:
Number of days left before recalibration is due
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 .
COn:
Carbon monoxide normalized
CO
2
:
Carbon dioxide (Measured) reading in percentage (%) .
CO/CO
2
:
CO/CO2 Ratio: measured CO (ppm) divided by (CO2 (%) x 10,000) .
DATE:
Date shown as month, day and year, MM/DD/YY . Date is recorded when each combustion test is printed or stored .
EFF:
Combustion efficiency calculation displayed in percentage either as Gross Ef(G), Net Ef(N), Gross Condensing EF(GC) or Net Condensing Ef(NC) -
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 .
EFG:
Gross efficiency
EfCG:
Gross condensing Efficiency
EfN:
Net efficiency
EfCN
:
Net condensing efficiency
FULL:
The maximum number of tests have been stored in the memory . To delete the stored memory, Select Reports then select the tests
to be deleted (see Page 19) .
INT
:
Interval in seconds
LOSS:
Losses calculated from oxygen and type of fuel . Displays reading during a combustion test . ‘- - - -’ is displayed while in fresh air .
mg/m3
:
Milligrams per meter cubed
mg/m3(n)
:
Milligrams per meter cubed normalized
mg/kWh
:
Milligrams per kilowatt hour
mg/kWh(n):
Milligrams per kilowatt hour normalized
N/F:
Not fitted
O
2
:
Oxygen (Calculated) reading in percentage (%)
O
2
++%:
Calculated oxygen greater than 18% so calculation is disabled
O2 ref
:
reference level in % for normalization calculation
p:
Parts per million
ppm
:
Parts per million
ppm(n):
Parts per million normalized
-P-OFF:
Pump off
PRS:
Pressure reading, either single point or differential .
Ra:
CO to CO
2
ratio
Tf:
Temperature measured by the flue gas probe in Fahrenheit (°F) and Centigrade (°C) . It displays ‘- OC -’ if the flue probe is
disconnected or faulty .
Ta:
If an inlet temperature probe (optional) is connected into the T1 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 analyzer during countdown the measured temperature from the flue probe
will be used as the inlet temperature .
If neither probe is connected during countdown the analyzer’s internal ambient temperature will be used as the inlet temperature .
ΔT:
Net temperature calculated by deducting the INLET temperature from the measured FLUE temperature . It displays ‘- OC -’ if the
flue probe is not connected or broken .
TIME:
The time shown is expressed in “Military” time HH:MM:SS . Time is recorded when each test is printed or stored .
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 .
Pressure units:
m:
millibar
s:
psi
h:
hPa
P:
Pa
g:
mmHg
i:
inH2O
w:
mmH
2
0
k:
kPa
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