RZ-3A Automatic Touch Screen Combustion Calorimeter (Oxygen Bomb Calorimeter)

Also known as an automatic calorimeter or oxygen bomb calorimeter, this instrument is applicable to industries and institutions including new energy, electric power, coal, metallurgy, petrochemicals, quality inspection, environmental protection, cement, papermaking, geological exploration and research institutes. It measures the calorific value of various combustibles such as biomass new energy materials, building thermal insulation materials, coal and petroleum. It complies with relevant national standards including GB/T 14402, GB/T 30727, GB/T 213 and GB/T 384.

I. Features

1. Adopts new American embedded technology with a 7-inch large color touchscreen. The integrated mounting structure ensures firm installation of the touchscreen.

2. The touchscreen uses CRT display material for enhanced durability. Covered with multi-layer composite film, it guarantees low color distortion, good anti-reflection property and high definition. It delivers sensitive response and high positioning accuracy. The effective touch area features high wear resistance and Chinese character display. Direct operation is available without an external computer.

3. Automatic water filling; water temperature adjustment is not required. Simply load the oxygen bomb into the bucket, and the instrument will automatically complete the whole test process. It has a rational structure, user-friendly design, reliable performance and low failure rate.

4. Chinese / English menu operation interface, intuitive, easy to learn and operate, stable and reliable performance. Photoelectric isolation between inner and outer cylinders provides strong anti-interference capability. New foaming thermal insulation technology ensures the test is unaffected by ambient temperature.

5. Repeatability uncertainty of heat capacity: ≤0.2%; precision ＜0.1%; temperature resolution: 0.0001 K.

6. The product maintains excellent performance and reliability even under harsh operating conditions.

7. Compact structure, attractive appearance, simple installation and maintenance, low failure rate. Built-in fault diagnosis function for user convenience; prompt for ignition success or failure.

8. Small footprint, extensively manufactured with moulds for high precision.

9. The repeatability and reproducibility of calorific value measurement exceed standard requirements, with good thermal stability.

II. Main Technical Parameters

1. Heat capacity: approx. 12000 J/K

2. Temperature measurement range: 5℃–35℃; operating ambient range: 0℃–40℃

3. Temperature measurement resolution: 0.0001 ℃

4. Ignition power supply: 0~30 V AC safe voltage

5. Calorific value test accuracy: better than 0.2% (using benzoic acid)

6. Power supply: AC220V±10%, 50 Hz

7. Weighing error: ≤±1 g (precision: 0.0001 g)

8. Oxygen bomb tightness: no air leakage at oxygen charging pressure of 2.5–3.5 MPa

9. Oxygen bomb pressure resistance: 21 MPa

10. Stirring power: 3 W

11. Oxygen bomb volume: 300 ml

12. Inner bucket volume: 2000 ml

13. Stirring speed of inner bucket: 375 r/min

14. Stirring mode: motor directly inserted into inner bucket for stirring

15. Relative deviation of heat capacity from five repeated tests (repeatability): ≤60 J/K

    
    

III. Applicable Standards

GB/T 30727-2014 Methods for determination of calorific value of solid biomass fuels 

GB/T 384 Method for test of calorific value of petroleum products 

GB/T 14402-2007 Reaction to fire tests for building materials and products — Determination of combustion heat 

GB/T 213-2008 Determination of calorific value of coal 

GB/T 483-2007 General rules for coal analysis test methods 

JC/T 1005-2006 Method for determination of calorific value of cement raw meal with coal