RODOS Isotope-free ash meter

Description

The RODOS Ash Meter is a device intended for measuring coal quality in underground mines and at coal processing facilities. The RODOS system is installed on a belt conveyor and enables continuous measurement of ash content and mass of materials such as hard coal, lignite, brown coal, and waste materials.

RODOS provides:

Real-time qualitative and quantitative control of:
- raw output and feed to the processing plant,
- coal transported directly from the mine to the power plant
A wide measurement zone – ensuring high representativeness of results
No influence of material chemical composition or moisture on ash content measurement accuracy
Adaptability to industrial control systems
User-friendly software, customizable to the user's needs, with network operation capability
Integration with dispatch systems and production balancing systems
FULL OPERATIONAL SAFETY – CONTAINS NO ARTIFICIAL SOURCES OF IONIZING RADIATION

Specification

Metrological Parameters:

Material types: hard coal, brown coal, lignite
Coal particle size: 0 – 200/300 mm
Minimum coal layer thickness on the belt: ~100 mm
Measurement range for ash content: 5 – 80%
Measurement error (static, absolute, defined by 1σ, including sampling and chemical analysis errors):
- for coal with particle size 0–200 mm: σ = 2% Aa
- for coal fines: σ = 1 – 1.5%
Readout accuracy: 0.10%
Type of measurement: dynamic, non-contact, automatic
Measurement result display: on monitor and external displays

Electrical Parameters:

Analog outputs: 4 – 20 mA, RS-485/422, modems
Nominal supply voltage: 220 V AC, 50 Hz (optional: 42 V AC, 50 Hz)

Mechanical Parameters:

Installation conditions: suitable for any belt type (including reinforced belts)
External dimensions and weight of components (depending on belt width):
- Enclosure with measurement head:
  - length: 2500 – 4800 mm
  - height: 750 – 1340 mm
  - width: 1520 – 2700 mm
  - weight: 1500 – 4200 kg
- Belt scale unit (MWT): belt width × 960 mm, weight: 161 – 272 kg

Operating Conditions:

Ambient temperature: 5 – 40°C (optional: –20 – 40°C)
Relative humidity at 20°C: 20 – 80%
Atmospheric pressure: 700 – 1060 hPa

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