M&C TechGroup SP2000-H320_S2 Operator's manual - Manual (Page 10)

10
Gas sampling and gas conditioning technology 2-1.1.4-ME
9 DESCRIPTION
The probes have been designed for easy mounting, safe operation, easy maintenance and a great
variety of applications.
The main features of this probe are: changing the filter element without tools and without necessity of
dismounting the sample line, easy cleaning of the filter housing, cleaning of the sample tube without
dismounting the probe. The big surface filter element is placed inside a heated filter receiving part of
stainless steel.
The M&C gas sample probe SP2000-H320/S is based on the standard sample probe SP2000-H320.
The temperature regulation of the gas sample probe SP2000-H320/S is made via an integrated capil-
lary sensor thermostat adjustable from 50 to 320 °C including an excess temperature limiter and
alarm in case of insufficient temperature. Optionally, the gas sample probe can be delivered with a
thermocouple FeCu-Ni instead of the thermostat regulator. In this case, an external temperature
regulator is not necessary (eg. 703).
According to the application, it is possible to add sample tubes and pre-filters of different sizes and
versions out of the modular system of M&C probe accessories. All these options are to be mounted
before the probe. In the outlet of the probe, the sample gas is lead via a heated connection adapter
into a non-heated (SP2000-H320/S and SP2000-H320/S1) or into a heated (SP2000-H320/S and
SP2000-H320/S1) collection vessel. Inside the vessel that is made of glass and filled with glass balls
to enlarge the surface, the chemical reaction of the sample gas takes place and the solid particles
and salts are deposited.
On the versions SP2000-H320/S and SP2000-H320/S1 the condensate collected in the collection
vessel is pumped out by the peristaltic pump SR25.1G. The condensate effects that the existing solid
contaminations are withdrawn and transmitted outside. Because of the heated connection adapter
and the hot gas flow, the operating temperature inside the collection vessel is increased compared to
the ambient temperature.
Due to the fact that the gas components are solved to a negligible extent in the warm condensate,
the application of this sampling technique in DENOX systems with a low content of NH
3
(normally a
few ppm) allows the analyse of SO
2
and NO
X
without important losses. These will be a few ppm only
and can normally be neglected. In order to examine exactly the extent of the losses, you can feed test
gas on the gas sample probe and determine the eventual measuring fault that can be calibrated af-
terwards.
On version SP2000-H320/S2 the collecting vessel is equipped with a heater in order to avoid chemi-
cal reactions of the sample gas components below a defined temperature as well as to avoid freezing
of the condensate in case the vessel is mounted outside. A heated sample line 3/4-M for max. 200 °C
operating temperature can be connected onto the gas outlet of the collection vessel. The collection
vessel is equipped with a heat isolating protection cover.
9.1 CONSTRUCTION OF THE PROBE
The complete probe is made up of the heated filter part and a sample tube or pre-filter. The filter re-
ceiving part with the surrounding heating jacket

is fitted together to a unit with the standard mount-
ing flange DN65 PN6

and the electrical connecting box mounted laterally

.
The heat insulated covering cap

is placed on the stainless steel angle plate

of the mounting
flange and is fixed with 2 fastening clamps. Thanks to the covering cap, the heat is distributed regu-
larly over the probe heating and serves at the same time as weather and contact protection. In the
probe outlet the connection adapter with the collecting vessel

is mounted. A mounting clamp

is
available for the connection of the heated line. On the probes SP2000-H320/S and SP2000-H320/S1
a peristaltic pump SR25.1

is mounted below the collecting vessel in order to evacuate the con-
densate.