Ash analyzer is specially designed to work in difficult conditions such as those in coal mining and processing it. Analyzer allows a precise determination of ash content and calorific value of coal, even on conveyors belts, in a continuous manner, without being affected by heat or dust in the process of measuring. Radiation emitted by a gamma source is attenuated by the passage on the coal conveyors belt.

Last generation of scintillation detectors with mounted opposite sources recorded radiation intensity transmitted. As the ash content of coal has a higher absorption than the fuel, the absorption is a direct measurement of ash content in coal on the conveyors belt.

From bottom to top, a subflow of the oil flows through the measurement configuration incorporating the systems for determining the sulphure content, densitym hydrogen content and temperature. The sulphure content, density and hydrogen content are determined radiometrically.

On one side of each measurement system there is a radiation source and on the opposite side a scintillation detector adapted to each individual measurement.

The three radiometric measurement methods are based on the following principles:

1. Sulphure content measurement: The absorption of a 244Cm source’s soft gamma radiation is influenced substantially by the oil’s sulphur content.
2. Density measurement: The absorption of a 137Cs source’s harder gamma radiation depends mainly on the oil’s density.
3. Hydrogen content measurement: It is significant wherever continuous monitoring of the hydrogen content it is necessary for process control purpose. It can also compensates for influences of C/H ratio changes on sulphur and density.

Determination of free acidity and iron content of the LB-3375D has the following advantages:

• No contact measuring
• without maintenance device
• measurements contained in a compact device that uses technology X radiation
• precisely and lasting long life