Page 7 - Shimadzu MXF-2400

Features

1 The World's First Multi-Channel P S 4 The Effect of Nearby or Interfering 100 Scintillation counter Kr exatron Gas flow proportional counter
Fluorescent X-ray Spectrometer to be
Elements can be Reduced
(5µ polypropylene)
Installed with a 4 kW (Thin Window) 1.5 Mn Ni : X-ray intensity Mo 80 Kr multitron Ar exatron Gas flow proportional
counter (6µ Mylar)
X-ray Tube A detector suitable for each element can be selected from between Counting efficiency (%) 60 Xe exatron
the gas sealed detector sealed with gas appropriate for elements such Ar multitron Ne exatron (Al)
Sensitivity has been enhanced to approximately 1.3 times for heavy as Ne, Ar and Kr (selection can be made over a broad range from 40 Ne exatron (Be)
elements and 1.7 times or more for light elements (elements lighter 1.0 : BEC 11Na to 92U), Ne multitron
20
than Cl). the scintillation detector, and the gas flow detector.
: Detection limit The effect of nearby or interfering elements can be minimized as the 0 1 2 3 4 5 6 7 8 9 10 11 12
0.7 K line
15 25 35 45 optimum detector can be selected to provide excellent detection BaMo Cu Fe Cr Ti Ca K Cl S P Si Al Mg Na
Atomic Number efficiency and good resolution for each element. L line UPbW CeBa SnCd Mo
Counting efficiency of detectors

2 Excellent Analytical Accuracy from 2θ Secondary slit Excellent Measuring Reproducibility for
Minute Regional Areas to Whole Areas

The converging spectrometer system is one of Shimadzu’s original 5 Light Elements 100
designs. The fluorescent X-ray focus doesn't be diverged, and
Using Shimadzu’s original vacuum stabilizer (patented), a constant
becomes extremely small at the secondary slit so that reflected X-ray
Curved crystal vacuum can be maintained during measuring. And as the change in
intensity is extremely high, and resolution is good in comparison with
X-ray intensity due to the change in the degree of vacuum (change Degree of vacuum Pa
other systems.
due to air absorption) can be suppressed, excellent measuring
reproducibility can be achieved for light elements (such as Al and Si) Vacuum stabilizing point
and superlight elements (such as Be, B and C).
Approx. 15 With vacuum stabilizer
Primary slit Without vacuum stabilizer

3 Excellent Long-term Stability and The point of starting analysis Time (sec.)
Maintenance-free Characteristics

Through the development of original technology by Shimadzu an
excellent gas sealed detector (SPC) is used to obtain long-term stability Exatron for detection of
heavy and light elements
and maintenance-free characteristics over a wide range (11Na to 92U) of Excellent Long-term Stability for
light elements including Na which normally only could be analyzed 6 Superlight Elements (Be, B, C, N, O, F)
using a gas flow detector (FPC).
Shimadzu’s own original gas sealed detector has the following The gas flow detector (FPC) has excellent long-term stability as pulse
features. height distribution is stabilized through the use of an automatic core
1) Starting up X-ray signals is fast, and a large number of X-ray signals wire winding system (Shimadzu patent) and a gas density stabilizer
can be counted at a high speed. with CPU control system.
2) CO2 is mixed in with the inert gases (Ne, Ar, Kr) to give good gas The automatic core wire winding system is different to the previous
Multitron for detection of Scintillation counter for
stability, and the core wire does not become contaminated as there heavy elements heavy elements core wire cleaning system and manual core wire winding system in
is no resolution deterioration due to ionization. that core wire winding is continuously automatic (5 mm per day) so
3) As there is no gas piping, consideration of the surroundings is not % CaO Statistical error 1σ (C.V. 0.084%) that the core wire does not become contaminated, analysis can be
Concentration
+0.4 44.7% Anode Window for X-rays
required, and excellent long-term stability is assured. (The device is +0.2 0.084% conducted always with a new core wire, and maintenance is not
0
ideal for process control and automatic analysis as the number of –0.2 needed.
–0.4
calibration curve adjustments and α/βcorrection can be minimized.) Furthermore, the PR gas flow and density necessary for the gas flow
4) As the gas is sealed in the device, there is no maintenance, which % Fe2O3 Statistical error 1σ (C.V. 0.22%) detector achieves stability in the gas density stabilizer with CPU PR gas
Concentration
makes the product extremely permanent. Moreover, the whole +0.8 2.1% 0.22% control system.
+0.4
spectrometer unit is kept stable as a thermostat in the device 0
–0.4
continually maintains the temperature to within ±0.2°C of the set –0.8
New core wire Used core wire
temperature. (C.V) 1st day 5th day 10th day 15th day 20th day 25th day 30th day
MXF-2400
Multi-Channel X-ray Fluorescence Spectrometer