EL3000
CONTINUOUS GAS ANALYZERS | CI/EL3000-EN REV. C
33
Special conditions for the model EL3040 gas analyzer in
degree of protection II 3G
Flammable gases
The gas analyzer in explosion-proof design may be used for
measurement of non-flammable gases and vapors.
Sample gas input pressure
Magnos28:
Maximum 1600 hPa absolute pressure
All other analyzer modules:
Maximum 1100 hPa absolute pressure or maximum
100 hPa gauge pressure
Pressure sensor
In which analyzer modules is a pressure sensor installed?
Gas analyzer
Pressure sensor
Uras26, Limas23, Caldos27 Factory-installed as standard
Magnos206, Magnos28,
Magnos27
Factory-installed as an option
Fidas24, ZO23
Not required
Information for the safe and correct operation of the
pressure sensor
NOTICE
Damage to the pressure sensor
Damage to the pressure sensor by corrosive gases.
• For the measurement of corrosive gases, the terminal of
the pressure sensor must not be connected to the sample
gas path.
• The pressure sensor must not be connected to the sample
gas path if the sample gas contains flammable or ignitable
components.
• Prior to the commissioning of the gas analyzer, the yellow
plastic screw plug has to be screwed out of the connectors
of the pressure sensor.
• For a precise pressure correction, the connection of the
pressure sensor and sample gas outlet should be connected
with each other via a T-piece and short lines.
The lines must be as short as possible or – in the case of a
greater length – have a sufficiently large inside diameter
(min. 10 mm) so that the flow effect is minimized.
If the pressure sensor is not connected to the sample gas
output, the pressure sensor and sample gas output must be
at the same level of pressure.
• Pressure sensor working range:
p
abs
= 600 to 1250 hPa.
Housing purge
Housing design
Housing purging is only possible with the wall-mounted housing
(model EL3040). The purge gas connectors (⅛ NPT female
thread) are factory-installed in accordance with the order.
Note
Housing purging in combination with Fidas24 is described
separately, see
When is a housing purge necessary?
A housing purge is necessary when the sample gas contains
flammable, corrosive or toxic components, see
conditions for the measurement of combustion gases
page 38.
Purge gas
DANGER
Risk of suffocation
Risk of suffocation due to leaking purge gas. Purge gas can
escape from the housing if there are any leak points.
• When using nitrogen as the purge gas, take all required
precautions against suffocation.
NOTICE
Damage to the device
If the purge gas flow is not restricted until after the purge gas
outlet, the full pressure of the purge gas will affect the
housing seals which can destroy the operator panel keypad!
• The purge gas flow must always be restricted upstream of
the purge gas inlet!
Suited purge gases
• Nitrogen for the measurement of flammable gases and
• Nitrogen or instrument air for the measurement of
corrosive or toxic gases
(Instrument air quality, based on ISO 8573-1 Class 3,
i.e. particle size max. 40 µm, oil content max. 1 mg/m
3
,
dew point max.
+3°
C).
Note
For Uras26, the purge gas must not contain any fractions of the
sample components!
Any sample components in the purge gas can cause false
readings.
