I. Summary
The instrument is designed and made as per the national standard GB/T509 Standard Test Method for Existent Gum of Engine Fuels. It is used to determine tendency of fuels (gasoline, kerosene and diesel oil) to form gum when the fuels are used in the engine.
II. Main technical features
1. This instrument is composed of oil bath and control box. Small size and reasonable design.
2. The oil bath is an interlayer steel vessel. Dimension is Φ196mm, height 255mm.1000W heating tube is equipped inside. Temperature control precision of oil bath is（150±3）℃,（180℃±3）℃,（250±5）℃
3. The control box can control the temperature of oil bath and flow rate of outer connecting gas source.
III. Main technical specifications
1. Power supply： AC 220 V±10%, 50 Hz
2. Bath type： Oil bath
3. Oil bath specification： Φ195 mm×255 mm
4. Oil bath volume： 5000 ml±50 ml
5. Heating mode： Heated by an electric heater
6. Heating power： 1000 W
7. Temperature controlling range： Room temperature～250 ℃
8. Temperature controlling accuracy： 150 ℃±3 ℃, 180 ℃±3 ℃, 250 ℃±5 ℃
9. Ambient temperature： Room temperature～+35 ℃
10. Relative humidity： ≤85%
11. Maximum power consumption： 1200 W
12. Dimension：
Control box: 280mm×260mm×380mm
Oil bath: Ф250mm×450mm
