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°C
4. Controlling temperature: 775±25°C
5. Temperature controlling device: thermocouple
6. Temperature rising time: no more than 60 min
7. Furnace temperature uniformity: no more than 15°C
8. Ambient temperature: 5°C-40°C
9. Relative humidity: no more than 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: no more than  80%
7. Plate size: 450mm×350 mm
  (3)Ceramic crucible
Size: 50 ml,  100 ml