I. SummaryGD-508 Ash Content Apparatus is designed and made as per the national standard of People’s Republic of China GB/T508 Test Method for Ash Content of Petroleum Products. It is suitable to determine ash content in the petroleum products as per GB/T508. GD-508 Ash Content Apparatus could not be used to determine ash content in the petroleum products containing ash-forming additives (including additives containing certain phosphorus compounds), lubricating oils containing lead, and used engine crankcase oils.
II. Main technical specifications and parameters
(1) Resistance furnace
1. Power supply: AC220V±10%, 50 Hz
2. Rated power: 2.5 kW
3. Heating range: ambient temperature~1000°C
4. Controlling temperature: 775±25°C
5. Temperature controlling device: thermocouple
6. Temperature rising time: ≤60 min
7. Furnace temperature uniformity: ≤15°C
8. Ambient temperature: 5°C~40°C
9. Relative humidity: ≤80%
10. Furnace chamber size (mm): 200mm×120mm×80mm (L×W×H)
(2) Heating plate
1. Power supply: AC220V±10%, 50Hz
2. Rated power: 2.5 kW
3. Heating mode: by three groups of heater. The power of each group is 0.8 kW. They can be used separately or at the same time.
4. Height above sea level at working site: not higher than 1000 meter
5. Ambient temperature: 5°C~40°C;
6. Relative humidity: ≤ 80%
7. Plate size: 450mm×350 mm(3) Ceramic crucible Size: 50 ml, 100 ml
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