EL3000 CONTINUOUS GAS ANALYZERS | CI/EL3000-EN REV. B 43
Special requirements for the measurement of flammable gases
NOTE
The version for the measurement of flammable gases and vapors and the
explosion-proof version with degree of protection II 3G (see page 11) are
different versions of the gas analyzer and designed for different applica-
tions.
Installation of the gas analyzer
Model EL3020 only: An unimpeded exchange of air with the surroundings
must be possible around the gas analyzer from beneath (base plate) and
from behind (gas connections). The gas analyzer must not be put direct-
ly on a table. The case apertures must not be closed. The distance to ad-
jacent, built-in components on the side must be at least 3 cm.
Model EL3020 only: For installations in a closed cabinet, the cabinet
must have adequate ventilation (at least 1 air change per hour). The dis-
tance to adjacent, built-in components underneath (floor plate) and be-
hind (gas connections) must be at least 3 cm.
The connection of the pressure sensor (see page 38) must not be con-
nected to the sample gas feed path.
The sample gas lines and connections have to be made in stainless steel.
Prior to using the gas analyzer the corrosion resistance against the pre-
sent sample gas must be tested.
Commissioning of the gas analyzer
The sample gas feed path must be purged (see page 105) with inert gas,
before the gas analyzer is commissioned.
Operation and maintenance of the gas analyzer
Model EL3040 only: The case must be purged with nitrogen. Purge gas
flow 1 to 20 l/h. The purge gas flow must be monitored at the purge gas
outlet.
The positive pressure in the sample gas feed path may not exceed a
maximum value of 100 hPa in normal operation and a maximum value of
500 hPa in the event of a fault.
The seal integrity of the sample gas feed path should be checked regu-
larly (see page 119).
After the sample gas feed path inside the gas analyzer has been opened
(see page 120), the following measures are required:
The seal integrity of the sample gas feed path should be checked.
The sample gas feed path must be purged with inert gas, before the
power supply is switched on.
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