The instrument features a stable and reliable automatic quantitative system, utilizing a high borosilicate glass integrated quantitative cup to ensure the inner cylinder water volume remains consistent across all tests, providing stability and reliability. It includes a specially designed oxygen bomb with strong pressure resistance and radio frequency identification capabilities. The outer cylinder employs a compressor refrigeration control method to ensure long-term stability of the water volume.

Technical Parameters:

1. Temperature Resolution: 0.0001°C

2. Test Cycle: ≤16 minutes (standard method), ≤10 minutes (rapid method)

3. Constant Temperature Accuracy of Outer Cylinder Water for Single Experiment: 0.10°C

4. Long-term Experiment System Water Temperature Constant Accuracy: 1°C

5. Sample Weight: Determined based on the calorific value range, commonly 1g for coal samples

6. Precision: Relative standard deviation of heat capacity repeatability not exceeding 0.15%

7. Accuracy: The difference between the test results of standard coal sample calorific value and the standard value falls within the uncertainty range; repeatability limit of benzoic acid calorific value test not exceeding 100J/g, and the difference between the measured calorific value and the standard value under specified conditions not exceeding 60J/g

8. Calorific Measurement Range: 15,000J to 35,000J

9. Power Supply: 220V±22V, 50Hz±1Hz