M&C TechGroup SP2000_20SS 150 Data sheet User Manual

Prefilters for gas sample probes series sp, Special features, Application

M&C TechGroup Germany GmbH • Rehhecke 79 • 40885 Ratingen • Germany

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Embracing Challenge

2.17

For dust loading up to 2g/m

Point selective sampling

Sampling after wet scrubber up to 90 °C

Sampling temperature up to max.
1800°C

Different lengths

Great variety of materials

Easy mounting

Special Features

Prefilters for Gas Sample Probes
Series SP®

Version SP2000/V20.. with G 3/4”-connection,
SP2000/V12 with flange connection,
Version SP2000/20SS 150 with tube connection

Prefilters for series SP®

Application

The M&C-prefilters are used together

with M&C gas sample probes series SP®

for continuous gas sampling in processes

with increased dust loading.

Description

The large active surface of the M&C prefilter

guaranties a long moulding time. Even in case

the flow rate of the sample gas is increased,

there is only a small difference pressure on the

filter matrix between clean gas and crude gas

side. Therefore, the solid particles do not get

into the filter’s pore structure. They are depos-

ited as filter cake on the filter’s surface and

cause a prolonged moulding time in its prop-

erty as prefilter. The M&C-prefilters SP2000 /

V20.. /V12.. /20SS are selected according to

the specific application. The basis for selec-

tion are the process parameters, i.e. the gas

compounds, dust loading, grain sizes, water

vapure saturation, temperature, pressure and

gas velocity.
The M&C prefilters /V20.. are equipped

with a welded thread connector for

mountage into the mounting flange of

the M&C gas sample probe. For an opti-

mal sampling position in the process, the

prefilters /V20.. can be mounted to the

sample probe via an extension tube /Vm...

In case of a high velocity of the process gas,

shape protection plates /AB.. are used in

order to protect the prefilters /V20.. against

abrasion.
The prefilters /V12-... have got a mount-

ing flange adapter of stainless steel,

executed with 4 threaded bolts for

easy mounting. The prefilter versions

/V12-.. /SS, /V12-.. /IC are equipped with

a welded protection tube of stainless

steel or Incoloy on the mounting flange

adaptor. The feeding of process gas is made

via the three longitudinal slots distributed on

180° tube periphery. The special double-ply

construction of the prefilter /V12-1, /V12-3

is granting a particularly high back purging

efficiency.

Depending on fabrication, the prefilters /V20..,

/V12.. are partially made of different material

combinations. See table. For reduction of the

delay time in case of a small sample gas flow,

prefilters with volume displacer have to be

used.
The M&C tube prefilter /V20-T of PTFE cloth

with interweaved metal filaments for reduc-

tion of the surface resistance (in order to

avoid frictional electricity) disposes over an

excellent back purging quality. It is used for

example in case of gas sampling out of coal

bunkers with a high content of superfine

dust.
The prefilter /20SS 150 is used for direct

mounting on the M&C sample tubes SP2000/

SS. It is supplied with a shape protection plate

and a tube fitting with double cutting ring.
If there are problems eg. in case the depth

for assembling is too small or the flow veloc-

ity is too high, or the dust content or the

temperature are too high, then the electrical

heated adapter tube /AR should be used. It is

equipped with a flange connection at both

sides and is to be mounted on the plant’s

connection flange.

Technical specifications and illustrations are without

obligation, subject to modifications. 09.96/03.09