EL3000
CONTINUOUS GAS ANALYZERS | OI/EL3000-EN REV. D
27
Magnos27
Sample gas
Sample gas inlet conditions
DANGER
Explosion hazard
Explosion hazard when measuring flammable gases and
ignitable gas / air or gas / oxygen mixtures
• The gas analyzer must not be used for measurement of
flammable gases and ignitable gas / air or gas / oxygen
mixtures.
Magnos27 – sample gas input conditions
Temperature
• The sample gas dew point should be at least 5 °C below the temperature
throughout the sample gas path. Otherwise a sample gas cooler or
condensate trap is required.
• When there is a direct connection to the sample chamber, the maximum
sample gas dew point is 55 °C.
• Water vapor content variations cause volume errors.
Designation of gas connections
The analyzer is operated under atmospheric pressure; the sample gas outlet is
open to atmosphere.
Internal pressure drop:
< 5 hPa at standard flow rate of 60 l/h.
Permissible absolute pressure range: 800 to 1250 hPa.
Operation under lower absolute pressure
(e.g. at altitudes above 2000 m) on
request.
Gauge pressure in the measuring
chamber:
max. 500 hPa.
Flow rate
20 to 90 l/h
Pressure sensor
The pressure sensor is optionally installed in the gas analyzer
(see
The pressure sensor is connected to a connection socket via an
FPM tube.
Gas connections
See
connections Magnos27 with Uras26 (model EL3020)
on page 77.
Tests gases – Magnos27
Analyzer
Test gas for the zero
calibration
Test gas for the end-point
calibration
Magnos27
Oxygen-free process gas
Process gas with a known
O
2
concentration
Magnos27
with
substitute gas
calibration
Oxygen-free process gas or
substitute gas (O
2
in N
2
)
Substitute gas, for example
dried air
Dew point
The dew point of the test gases must be approximately equal to
the dew point of the sample gas.
Note
The instructions for calibration must be observed, see
Magnos27 – notes for calibration
