JH-9C microcomputer automatic calorimeter for measuring the calorific value of coal, coke, petroleum and other combustible materials, in line with the national standard GB / T213-2007 "Determination of calorific value of coal method" requirements. Features: 1.JH-9C type: oxygen bomb automatic lift, automatic oxygenation, deflated, easy to operate. 2. The advanced refrigeration technology to ensure that the temperature difference between inside and outside the instrument meet the national standard requirements. 3. continuous work long hours. The stainless steel vacuum barrel. Mixing system imported from Germany motor. 5. The test speed, test cycle ≤8min (Rapid method) ≤15min (GB GB / T213-2003) 6. heat capacity stability <0.2% accuracy <0.1% Temperature resolution 0.0001K 7. The product even in harsh environments run tend to have good performance and reliability. 8. compact structure, attractive appearance, installation, easy maintenance, low failure rate. 9. compact, heavy use of mold manufacturing, high precision. 10. Heat test repeatability and reproducibility better than the national standard GB / T212-2007 requirements. 11. The high degree of automation, automatic with built-in fixed container to determine the amount of water in the tub, the water temperature inside and outside temperature difference through automatic control instruments, automatic completion of the pilot process. 12. Using WindowsXP operating system, a machine control, test each other independently of each other, high software running stability. 13. The data processing feature-rich, user can easily query historical test data, the day of data, parallel sample data. 14 can be connected to an electronic balance, automatic input sample weight. Technical parameters: Temperature measurement range: 0-40 ℃ precision: ≤0.1% Resolution: 0.0001K Supply voltage: 220V ± 10% 50Hz Ambient temperature: 5-35 ℃, every measurement indoor temperature changes over 1K, then the room is not strong airflow and sunlight; relative humidity less than 80%