【Scope of application】
It meets the technical indicators and requirements stipulated in the national standard GB/T14402-2007 “Determination of the combustion performance and calorific value of building materials and products”, and is suitable for the test of the calorific value of building materials. The test method specified in this standard is used to test the absolute calorific value of the combustion of the test product, regardless of the morphology of the product.
【Relevant Standards】
Standard: GB/T 14402-2007 ISO1716-2002
【Scope of application】:
It meets the technical indicators and requirements stipulated in the national standard GB/T14402-2007 “Determination of the combustion performance and calorific value of building materials and products”, and is suitable for the test of the calorific value of building materials. The test method specified in this standard is used to test the absolute calorific value of the combustion of the test product, regardless of the morphology of the product.
[Meet the standard]:
Standard: GB/T 14402-2007 ISO1716-2002
[Instrument features]:
1. Meet the national standard stipulation that “the inner cylinder is about 1K higher than the outer cylinder at the end”
2. The combustion calorific value meter maintains all the functions of the microcomputer system, can run general software for other transaction processing, and at the same time start the calorimeter measurement system can automatically calibrate the water equivalent (heat capacity) of the calorimetry system and measure the calorific value of the substance (the user brings his own computer, printer; Host computer software, router, network cable will be sent with the device)
3. The inner cylinder of the combustion calorific value tester device adopts the electric stirring of the sheet paddle, and the stirring of the outer cylinder adopts the submersible electric stirring, which makes the stirring more uniform and more convenient. The instrument adopts the fused cotton wire ignition method.
4. The combustion calorific value tester is operated on Winsows7 and above operating systems, and the whole process of Chinese character prompts and human-computer interaction can be learned and used, and the test can be completed by following the prompts and instructions.
5. Automatically control the water temperature of the outer cylinder at the set temperature point to ensure that the change of actual temperature does not affect the cooling correction, and the measurement results are more accurate
6. Automatically adjust the temperature of the inner and outer cylinders, and adopt cooling correction system, water circulation system and software automatic error compensation system to reduce cooling correction and make the measurement results more accurate
(Note: The two parameters here are optional, please inquire for details)
【Technical Parameters】:
1. Measurement principle: oxygen bomb calorimetry
2. Measurement time: 25-30min
3. Precision: RSD≤0.1%
4. Temperature resolution: 0.001°C
5. Ignition time: 3-10s
6. Ignition voltage: AC-24V
7. Heat capacity: about 10320J/K
8. Outer water cylinder capacity: about 50L
9. Inner water cylinder capacity: about 2.1L
10. Usage environment: 23±2°C relative humidity 40~60%RH
11. Power supply: AC220V±10% 50Hz
12. Host power: 300W
13. Oxygen bomb: (1) Capacity: 300ml
(2) Oxygenation pressure: 2.5~3.8MPa
(3) Pressure resistance: water pressure 20MPa
(4) Weight: about 2.5Kg
14. Calorimeter capacity: (300±50) mL.
15. The withstand pressure of the calorimeter bomb is 21Mpa.
16. Crucible: Φ25mm, height (14-19)mm, wall thickness 1mm.
17. Timer: Accuracy is 0.5s.
18. Maximum working power: 0.5KW;
19. Ambient temperature: (10~35)°C, humidity ≤80%;
20. Instrument heat capacity: about 10000J/K;
21. Repeatability error of heat capacity: ≤0.2%;
22. Temperature measurement range: (4.5-42)°C;
23. Temperature resolution: 0.001oK;
24. Inner cylinder volume: 2000ml;
25. Oxygen bomb sealing: oxygenation pressure 2. 8~3.2MPa, no air leakage;
26. Stirring power: 3W;
27. Stirring speed: inner cylinder (375r/min).
【Performance Indicators】 :
1. Electrostatic spraying treatment of steel plate box
2. Automatic detection of broken ignition wire, automatic ignition.
3. Automatic extinguishing during the test process.
4. High-precision pt100 temperature sensor temperature measurement, 16-bit PLC temperature module transmission to ensure the reliability and accuracy of measurement data.
5. Test abnormal alarm prompt.
6. Control parameter setting and display; test status and fault display and query;
7. Temperature data collection and storage; screen monitoring, real-time temperature curve display;
8. Historical curves and data queries;
9. Data files can be exported by USB/printed externally;
10. The control box is equipped with USB/RS232 serial port, and can be connected to external desktop/laptop operation control. High degree of automation, safe and reliable testing process, convenient operation;
11. The thickness of the barrel is greater than 1/10 of the inner diameter of the barrel
12. The lid can accommodate the crucible and electronic ignition, and the lid and all sealing devices can withstand the internal pressure of 21Mpa
13. The inner wall of the barrel is made of USU304# stainless steel, which can withstand the erosion of sample combustion products, and can also resist point corrosion and intergranular corrosion caused by acidic substances produced by combustion
