The WALKER2 portable analyzer is designed for rapid, routine determination of moisture and ash content in coal, directly at its storage location, e.g., at user stockpiles or in railcars. The WALKER2 portable analyzer also enables the calculation of the calorific value of the tested material based on the obtained results.
The method used in the device for measuring ash content in coal, based on measuring the intensity of the coal's natural gamma radiation, offers several advantages that make an instrument utilizing this method well-suited for use in mines, power plants and other smaller coal-consuming facilities.
The advantages of the device include:
No artificial radiation source, eliminating the possibility of a radiation accident
Low supply voltage, eliminating the hazard of electric shock
A simple procedure and relatively short duration for individual measurements.
Capability to measure coal moisture.
Multi-language device support.
Possibility of smartphone operation using Bluetooth 4.2
Specification
Ash content measurement range
5% – 100%
Measurement uncertainty for ash content in coal
σ = 1.5% Ar
Measurement uncertainty for coal moisture
σ = 1.5% H
Measurement resolution for moisture and ash content in coal
0.1%
Measurement resolution for calorific value
1 kcal
Measurement time
5 - 999 s (typically 100 s)
Number of measuring channels
16
Operating conditions: operating temperature (permissible) relative humidity max. atmospheric pressure
