34 EL3000 CONTINUOUS GAS ANALYZERS | CI/EL3000-EN REV. B
Fidas24: Preparation for installation
Sample gas
Sample components
Hydrocarbons (THC). The sample component concentration in the sample
gas path should not exceed the temperature-dependent LEL. The analyzer
temperature is 180 °C.
Sample gas inlet conditions
Temperature ≤ Thermostat temperature (thermostat temperature for
sample gas path, detector and air jet injector ≤ 200 °C,
pre-set ex works to 180 °C)
Inlet pressure p
abs
= 800 to 1100 hPa
Flow Approx. 80 to 100 l/h at atmospheric pressure (1000 hPa)
Humidity ≤ 40 % H
2
O
Remark: Sample gas temperature, pressure and flow rate should be main-
tained constant to such a degree that the fluctuation influence on the accu-
racy of measurement is acceptable (see also Chapter "Analyzer module oper-
ating data").
Sample gas outlet conditions
The outlet pressure must be the same as the atmospheric pressure.
Flammable gases
The gas analyzer may be used for the measurement of flammable gases
provided that the flammable portion does not exceed 15 vol.% CH
4
or
C1 equivalents.
Further sample gas inlet conditions
The sample gas may not be explosive at any time.
The analyzer module must not be used for measurement of gases containing
organometallic compounds, e.g. leaded gasoline additives or silicone oils.
Process gases
Instrument air
Quality as per ISO 8573-1 Class 2 (max. particle size 1 µm, max.
particle density 1 mg/m
3
, max. oil content 0.1 mg/m
3
, dew
point at least 10 °C below the lowest expected ambient
temperature)
Inlet pressure p
e
= 4000 ± 500 hPa
Flow typically approx. 1800 l/h (1200 l/h for air jet injector and
approx. 600 l/h for housing purge), maximum ap-
prox. 2200 l/h (1500 l/h + 700 l/h)
Combustion air
Quality Synthetic air or catalytically cleaned air with an organic C
content < 1 % of span
Inlet pressure p
e
= 1200 ± 100 hPa
Flow < 20 l/h
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