165
K600000000SE 030804 011018
15.8 NH
3
sensor for ammonia gas measurement in combustion processes
This sensor measures the presence of ammonia (NH
3
) in combustion gases and, since this gas is easily soluble
in H
2
O some precautions are necessary; the measure must be performed:
- For short periods of time (1-2 hours)
- Using only the flue gas sampling probe for AASX02 industrial engines as it is equipped with a filter on the tip,
suitable to perform this measurement. This filter, creates a dry "pre-filtration" in order to retain the humidity that
actually cancels the NH
3
content present in the fumes, making it not measurable.
The filter being inserted inside the chimney is heated by the fumes and kept warm; the gas that passes
through the filter does not form condensation and therefore allows an accurate measurement of ammonia. The
filter inserted in the chimney is called "hot filter".
In addition to the filter on the tip, in the second anti-condensation trap there is an HDPE filter that retains the dust
particles but does not retain the residual moisture and therefore the ammonia. In the presence of clean fumes
and in the presence of so much humidity, this second filter can be omitted, without compromising the ammonia
measurement.
USE ONLY WITH THE SMOKE PROBE FOR INDUSTRIAL ENGINES COMPLETE WITH
SINTERED STEEL FILTER ON THE TIP AND FILTER CARTRIDGE IN HDPE ON THE WATER
TRAP (COD AASX02).
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