Version SP3000 for sampling from zones with
explosive dust
Special Features
Approval according to ATEX for sam-
pling from Ex-zone 20, 21 and 22
Approval according to ATEX for mount-
ing in Ex-zone 1, 2 or 21, 22
Optimum operational reliability
Universal applicability
Adaption to nearly all process condi-
tions due to its compact and modular
design
Easy mounting and maintanance
Small volume, fast response time
Application
The M&C sample probes version SP3000 are
used for continuous extraction of explosive
gases (Ex-zone 20, 21 and 22) from dust
loaden, high temperature and/or humid processes. The probes can be mounted in Ex-zone
1, 2 or 21, 22.
Description
The sample probes are designed for easy
installation, reliable operation and troublefree maintenance. They are versatile in application and depending on the task to be performed, various pre-filters series V12/V20 with
integrated volume displacer and optional
with extension tubes (see page 4 and data
sheet 2-1.1.0.8), not included in the scale
of delivery, can be simply screwed into the
mounting flange of the basic probe. These
process-internal M&C pre-filters are necessary
for a valid Ex-approval of the M&C-probes
type SP3000. For error control of the pre-filter
the sample gas flow rate has to be monitored
externally.
The probe-internal M&C stainless steel filter element with a large surface and high
capacity is located in the external housing.
The design offers little or no stagnant space
outside the process. The probe housing is
covered with a protection shield which is part
of the Ex-approval.
The probes are designed in such a way that
changing the filter element is possible without the use of tools. In this operation, neither
the sample probe tube nor the sample line
need to be removed, thus avoiding contamination of the clean gas path and maintaining
the integrity of the system.
The special design of the optional heating of
the M&C-probes version SP3000 permits controlled heating of the complete filter housing,
including the mounting flange. This ensures
reliable operation external to the process
preventing the temperature falling below the
dew-point.
The temperature of the M&C-probes version
SP3000 is controlled by a self-regulated heater version HEX4-135 or HEX4-180 (see data
sheet 2-3.2) for Ex-zone 1 and 21, temperature
class T4 resp. T3 and for gas sampling from
zone 0, 1 or 2. In dependence of the ambient
temperature and the heater version, the min.
temperature in the probe is 90°C resp. 120°C,
the max. temperature is 120°C resp. 160°C.
For back-purging the M&C pre-filter, the
option RS is available with mounted buffer
vessel triggered by an explosion-proof solenoid valve. With the mounted option for backpurging type RS, gas can be sampled from
zone 20, 21 and 22. The back-purge pressure
has to be monitored externally and has to be
min. 1 bar higher than the process pressure.
For the pressure control while back-purging
a corresponding special valve is mounted
in the sample gas outlet. Thus an additional
solenoid valve to shut off the sample gas
outlet is not necessary. The back purge inlet is
shut off by a check valve.
When sampling from Ex-zones, back
purging is only allowed with a gas suitable for the sampling point.
Technical specications and illustrations are without
obligation, subject to modications. 10.04/11.12
Stainless steel pre-filter with volume displacer, length 220mm, 46mm o.d., filter porosity 2µm,temperature max. 600°C, material
SS316
Hastelloy pre-filter with volume displacer, length 220mm, 46mm o.d., filter porosity 2µm, temperature max. 900°C, material
Hastelloy-C
Stainless steel pre-filter with volume displacer, length 520mm, 60mm o.d., filter porosity 2µm, temperature max. 600°C, material
SS316
Hastelloy pre-filter with volume displacer, length 520mm, 60mm o.d., filter porosity 2µm, temperature max. 900°C, material
Hastelloy-C
Hastelloy pre-filter with volume displacer, length 520mm, 60mm o.d., filter porosity 0,5µm,temperature max. 900°C, material
Hastelloy-C
Stainless steel pre-filter with volume displacer, length 300mm, 31mm o.d., filter porosity 2µm, temperature max. 600°C, material
SS316
Extra charge for extension of insitu stainless steel filter V20-3 or V20-4 for each 100 mm further length (from standard length
300mm to .... mm), max. 1000 mm total filter length, material: SS316
Backflushable hose pre-filter with internal support tube, length: 400mm, 40mm o.D., filter porosity 15µm,temperature max. 200°C,
material PTFE, SS316
Insitu ceramic filter tube in double-layer version for high blow back efficiency, with volume displacer, length 500mm, 40mm o.d.,
filter porosity 1µm, temperature max. 1000°C, material ceramic, SS316, connection G3/4"
Extension tube for V20.. with internal volume displacer , length 500mm, temperature max. 600°C, material SS316Vm50020 S 9165
Extension tube for V20.. with internal volume displacer , length 1000mm, temperature max. 600°C, material SS316Vm100020 S 9170
Extension tube for V20.. with internal volume displacer , length 1500mm, temperature max. 600°C, material SS316Vm150020 S 9175
* For a valid Ex-approval according to ATEX, only operate the probe SP3000 with one of the above listed pre-lters
For choosing the adequate pre-lter see data sheet 2-1.1.0.8 as well
V20-020 S 9105
V20-0/HC20 S 9115
V20-120 S 9145
V20-1/HC20 S 9155
V20-1/HC20 S 9156
V20-320 S 9300
V20-320 S 9310
V20-T20 S 9315
V12-1A-120 S 9559
Temperature classes for sampling from Ex-zone 20, 21 or 22
Type Possible OptionsMarkingTemperature classMax. process gas temp. (°C) at