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Carbolite CAF G5 Ash Fusibility Test Furnace

The CAF G5 is a furnace designed to test ash fusibility and determine biomass or solid recovered fuels testing.

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The CAF G5 furnace is specifically designed to test the ash fusibility of coal and can also be used to determine biomass or solid recovered fuels testing, which is becoming increasingly popular. The furnace conforms to several standards, including ISO 540:2008, ASTM D 1857 / D1857M – 04 (2010), DIN 51730:2007-09, DD CEN/TS 15370-1:2006 (for biomass), and PD CEN/TR 15404:2010 (for solid recovered fuels (SRF)).

One of the major advantages of the CAF G5 is its automatic and continuous recording of digital images, which allows laboratory technicians to carry out other tasks while the test is in progress and review the results later. Moreover, the CAF G5 has greatly improved the quality of the recorded images and test results, thus increasing laboratory efficiency.

The furnace can reach a maximum temperature of 1600 °C, which makes it suitable for both biomass and coal testing. Additionally, an optional work tube integrated lighting system is available when testing low “initial deformation” temperatures of SRF or biomass samples, which can enhance the accuracy of the results.

Standard Features

  • Analysis software which can be used in fully automatic or manual modes
  • Software zoom function to enable accurate post-test analysis of individual samples with improved resolution
  • One configurable grid is assigned to each test piece
  • Temperature controller program set up within the software
  • Space-saving embedded computer with Windows 7 Embedded Professional software runs future-proof firmware
  • Default software settings and individual analysis forms for coal ash, biomass and SRF
  • An optional work tube integrated lighting system when testing low initial deformation temperature of biomass or SRF samples
  • Lightweight insulation allows quick cooling, permitting multiple tests to be completed during the day
  • Automated digital image capture of samples. The frequency of images recorded is set by customer preference, from every 1 °C increment to every 20 °C. The maximum interval for auto analysis is 5°C.

Technical Details

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    1. 1600 °C tube furnace with integral SiC elements
    2. External link to embedded PC & software
    3. Flow meters for oxidizing reducing gas flow (dependent on the requirements of the standards)
    4. 4.79 mm inner diameter work tube allows more than 6 samples
    5. Digital camera for fast and accurate image recording
    6. Gas-tight seal for efficient use of gases & safety of the operator
    7. Automatic temperature programmer with multiple PID control
    8. Gas inlets for reducing, oxidizing & purging gasses
    9. Oxidizing or reducing gas selection switch
    10. Work tube integrated light for use when testing low ‘initial deformation’ temperature of biomass and SRF samples (optional)

     

Technical Details (Models)

 

Temperature Range Up to 1600°C (1600°C required for some biomass samples)
Temperature Precision ± 3°C above 800°C
Temperature Ramp Rate 7°C per minute
Temperature Control Digital multiple PID terms with gain scheduling and multi-offset parameters
Temperature Display °C
Work Tube Dimensions 79 mm internal diameter
Tube Material RCA
Heating Elements Silicon carbide x 6
Maximum Sample Load, Manual Analysis 8
Maximum Sample Load, Automatic Analysis 6
Conforms to Standards BS ISO 540:2008; ASTM D 1857 / D1857M – 04 (2010); DIN 51730:2007-09; DD CEN/TS 15370-1:2006; PD CEN/TR 15404:2010
Ash Fusibility Determination Automatic or Manual (Coal & coke: DT, ST, H, FT) (Biomass / SRF: IST, DT, HT, FT)
Analysis Time 3 runs per working day (including cool-down times)
Image Collection Digital – up to 1 frame per 1°C rise in temperature
Image Resolution 1280 x 1024 pixels
Gas Requirements: Purge N2 or CO2
Gas Requirements: Oxidizing O2 or Air
Gas Requirements: Reducing CO + CO2 or H2 + CO2
Ventilation Forced Air Ventilation
Exhaust Pipe to be vented into a separate fume hood
Safety Fail-safe gas system and CO alarm supplied
Physical Dimensions (mm) 790 (h) x 505 (w) x 765 (case depth) x 970 (overall depth)
Weight (kg) (furnace) 84
Power Supply 380 – 415 V, 50/60 Hz two phase 25 A/phase or 220 – 240 V, 50/60 Hz single phase 50 A
Power Switching Solid state relays
Maximum Power Consumption (kW) 7
Environment Conditions – Operating Conditions 5°C – 40°C
Environment Conditions – Relative Humidity maximum 80% up to 31°C decreasing linearly to 50% at 40°C
Overtemperature Protection Digital with single high alarm relay

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