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CS-530
Carbon
/ Sulfur Determinator |
 Carbon/Sulfur
models
CS-800
, CS-2000
Carbon/Water
model
CW-800
Surface
Carbon model
SC-800 |
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| Overview |
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The
CS-530 incorporates the latest in combustion technology.
It is designed for the rapid simultaneous determination
of carbon and sulfur in coal, coke, oil, ashes, catalysts,
lime, gypsum, soils, rubber, leaves, soot, tobacco,
waste, sand, glass, etc. The CS-530 can be supplied
with up to four independent infrared cells. The sensitivity
of these cells can be customized to meet specific requirements.
The IR-absorption lengths can be individually selected
to offer optimum precision for the analysis of high
and low levels of both, sulfur and carbon. The CS-530 features a microcontroller, a high temperature
resistance furnace up to 1550°C and solid state infrared
detectors with auto zero and auto range control. |
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| Analysis
procedure |
The
sample is weighed into a combustion boat on an electronic
balance which is interfaced to the PC. By pressing a
key the sample weight is transferred to the PC. If required,
the sample weight can also be entered manually. The
ceramic boat with the sample is placed on the furnace
platform. The start key is pressed and the analysis
cycle begins. The sample is pushed into the furnace.
At the end of the cycle, the analysis results appear
on the PC screen. |
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PC control with Windows 2000/XP software |
Comprehensive
analyser control and easy operation are provided by the software
running on PC, connected to the analyser.
Click software from
the main menu for more information about software. |
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| Fractional
analysis |
Due
to the fact that free carbon and sulfur burn at lower
temperatures than carbides and sulfates, the CS-530
can separate and measure free carbon, free sulfur and
carbides and sulfates. After inserting the sample in
the combustion boat into the furnace, the boat gradually
heats up. The free carbon and sulfur within the sample
burn first, while carbides and sulfides burn several
seconds later. The peak separation software integrates
the individual peaks and then displays the results at
the end of the combustion. |
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| Infrared
Cells |
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The
infrared cells of the CS-530 do not require any manual
zero adjustments. The zero and sensitivity adjustments
of the infrared cells are permanently and automatically
controlled by the electronics. The detectors utilize
solid state sensors combined with infrared filters.
The sensors are not gas filled, thus eliminating long
term problems due to gas leakage. The CS-530 can be
equipped with up to four independent infrared cells
for carbon and sulfur determination. The lengths of
all four cells can be individually optimized to obtain
maximum precision for the target analysis levels of
each customer. Each of the cells can be installed with
infrared absorption lengths ranging between 1 mm
and 320 mm. |
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| Electronic
Flow Controller |
An
essential part of the gas flow system is the electronic flow
controller. This provides a stable gas flow by eliminating
the known disadvantages of mechanical controllers. |
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| Resistance
Furnace up to 1550°C |
The
resistance furnace employs silicon carbide heating elements.
Full electronic control includes current limitation during
cold-start conditions to promote long element life. A separate
sensor is used to monitor ambient temperature and provide
data for automatic reference point compensation ensuring that
furnace temperature is not affected by fluctuations of ambient
temperature. The furnace requires approximately 10 to 15 minutes
to reach operating temperature. |
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| Combustion
efficiency |
The
design of the resistance furnace boat stop ensures oxygen
carrier gas penetrates into the crucible, ensuring efficient
combustion. This design eliminates the need for fragile
lances and honeycomb boat stops which tend to block
easily with ash. Additionally the boat stop protects
the combustion tube from the aggressive combustion products,
thus extending the life of the tube. The combustion
tube is a simple straight ceramic tube that is robust
and inexpensive to replace. The life expectancy of the
tube is measured in thousands of analyses and not hundreds
as is the case with other analysers. (Protected by German
utility model) |
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A
variety of combustion boats can be used in the furnace,
including the reusable ceramic boats (L=57 mm, W=22mm,
H=13 mm). Porcelain or quartz boats are also an
option. |
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| TIC-module |
For
the TIC determination, the sample is treated with acid
in a TIC module. TIC and total carbon (TC) can be alternately
analysed without modifications. For TIC analysis the
sample is treated with acid in an Erlenmeyer flask inside
the TIC-module. The acid decomposes the carbonates in
the sample, creating CO2. The oxygen purges the CO2
out of the flask, through to the infrared detector.
TC is determined when the sample is introduced into
the furnace for combustion and IR detection.
Operating
procedure:
An empty flask is placed on the balance.
The tare button is pressed.
The sample is put into the flask. Tha sample weight
is entered into analyser by pressing a key.
A magnetic stirrer is placed into the flask. The flask is attached to the TIC-module and the heated platform is raised.
The start key is pressed.
The acid is injected with the magnetic stirrer rotating. The CO2 is released from the sample.
The infrared cell begins detection. When all the CO2 is released from the sample, the detector's signal will return down to the baseline level and the analysis will be terminated.
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| Compliance |
The
CS-530 complies to the specifications of the standards:
ISO-10694
ASTM E1915-97, D-1552, D-4239, D-1619
DIN
EN 13137
PN-93
G-04514/17 |
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Next:
CS-530 Specifications |
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