A:Product  Introduction:

　DSHD-508 Ash Content Tester 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.

 The function of DSHD-508 Ash Content Tester is to determine ash content in the petroleum products as per GB/T508. It 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.

B: Main technical specifications and parameters:
(1) Resistance furnace
1. Rated power: 2.5 kW
2. Power supply: AC220V±10%, 50 Hz
3. Heating range: ambient temperature～1000℃
4. Controlling temperature: 775±25℃
5. Temperature controlling device: thermocouple
6. Temperature rising time: ≤60 min
7. Furnace temperature uniformity: ≤15℃
8. Ambient temperature: 5℃～40℃
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℃～40℃;
6. Relative humidity: ≤ 80%
7. Plate size: 450mm×350 mm
  (3) Ceramic crucible
Size: 50 ml, 100 ml