Metrological Parameters:

• Type of measurement: Automatic, dynamic, non-contact
• Measured material: Hard coal
• Coal granulation: 0 – 30 (80) mm
• Layer thickness: 50 – 250 (300) mm

• Measurement ranges:
• Ash content: 3 – 95% Ar
• Moisture content: 3 – 30% Wrt
• Measurement error (based on average standard deviation):

• Ash 3 – 30%: σ ≤ 1.5% Ar
• Ash 30 – 95%: σ ≤ 2% Ar
• Moisture: σ ≤ 1.5% Wrt

• Basic measurement time, Any multiple of base interval

Electrical Parameters:

• Power supply:
  • Ash gauge electronics: 230 V AC, 50 Hz
  • Moisture gauge electronics: 24 V DC
• Protection class: IP54

• Radiation source characteristics:
• In ash gauge:
  • ¹³⁷Cs – 0.555 GBq
  • ²⁴¹Am – 11.1 GBq
• In moisture gauge:
  • Electromagnetic wave, power 10 mW

• Outputs:
  • Standard: RS 422
  • Optional: Current loop 4–20 mA
• Measurement result display: Monitors, displays

Mechanical Parameters:

• Installation and operating conditions:
  • All standard, unreinforced conveyor belts
  • Central placement of layered coal of varying quality
• External dimensions and weight of ash or moisture gauge:
  • Mechanical part: 1400 × 600 × s mm (s = conveyor width)
  • Ash gauge electronics: 280 × 280 × 150 mm
  • Moisture gauge electronics: 140 × 160 × 30 mm
  • Weight: approx. 200 kg depending on s

• Operating Conditions:
• Ambient temperature: –10°C to +40°C
• Relative humidity at 20°C: 20 – 80%
• Atmospheric pressure: 700 – 1060 hPa