Standards

ISO 1928-1995, GB/T213

The automatic calorimeter is specially used to determine the calorific value of coal, coke, petroleum, solid waste, cement black raw meal and other combustible substances.

Features

◎ Five probes are used for real-time temperature sensing. During the test, the external cylinder, the internal cylinder, the temperature regulating water tank, the thermostatic water tank and the room temperature are detected in real time, so as to truly realize the automatic temperature adjustment of the internal and external cylinders;

◎ The MCPC control module is used to monitor the status of the instrument in real time, save the instrument parameters, and the test process is completed independently without the intervention of the upper computer, realizing offline operation and self diagnosis reminder of the instrument, greatly improving the reliability of the instrument;

◎ New automatic oxygen charging and venting device and automatic lifting mechanism of oxygen bomb are adopted, which can automatically lift and release oxygen, with high degree of automation and simple and convenient operation;

◎ The automatic identification technology of oxygen bomb is adopted to automatically distinguish the heat capacity of different oxygen bombs;

◎ The pump circulation mode is adopted to make the temperature of each point of the whole calorimetric system of the instrument fairly balanced, so as to ensure the accuracy of the test results;

◎ Thermal insulation materials are used to isolate the influence of external environment, and the instrument has strong anti-interference ability;

◎ The probe type electronic measuring cup is used to automatically measure the water volume of the inner cylinder. The repetition error is less than 0.5g, and the water volume of the inner cylinder is accurate and stable. The test time is short and the results are accurate;

◎ Automatic judgment function of ignition wire, which can accurately judge the bad state of ignition wire;

◎ Digital barometer is used to facilitate observation;

◎ Filter device for test water is used to prevent impurities from blocking the water path;

◎ According to the working conditions of the laboratory, it can be converted from desktop to vertical structure;

◎ It can be connected to the laboratory management system to ensure that the balance data does not fall to the ground, and the test results are backed up and uploaded;

◎ For solid waste samples, special oxygen bomb, crucible and other accessories can be selected;

◎ The optional oxygen bomb gas collection device is used to collect the gas in the oxygen bomb.

Specifications

Model	MJ-CV-OB-6	MJ-CV-OB-5	MJ-CV-OB-4
Temperature measuring range	5℃～40℃	5℃～40℃	5℃～40℃
Precision	RSD≤0.1%	RSD≤0.1%	RSD≤0.1%
Thermal capacity stability	Change of heat capacity within one year≤0.2%	Change of heat capacity within one year≤0.2%	Change of heat capacity within one year≤0.2%
Accuracy	Better than accuracy required in standard	Better than accuracy required in standard	Better than accuracy required in standard
Temperature resolution	0.0001℃	0.0001℃	0.0001℃
Single sample test time	≤13min(traditional method),≤10min(fast)	≤13min(traditional method),≤10min(fast)	≤13min(traditional method),≤10min(fast)
Temperature sensing technology	√	√	√
Oxygen bomb identification	√	√	/
MCPC module	√	√	/
Water level visibility	√	√	/
Oxygen charging mode	Automatic	Manual	Automatic
Exhaust mode	Automatic	Manual	Automatic
Lifting cover opening	Automatic	Automatic	Automatic
Water volume of outer barrel	22L	22L	22L
Refrigerating water volume	12L	12L	8L
Refrigeration mode	Semi-conductor	Semi-conductor	Compressor
Placement method	Desktop, vertical	Desktop, vertical	Desktop
Working power supply	AC220V±22V/50Hz
Power	≤0.8 kW		0.5kw
Overall dimension (mm)	980×520×500		830×460×470
Total weight	115 kg	105 kg	77 kg

Model	MJ-CV-OB-3	MJ-CV-OB-2	MJ-CV-OB-1
Temperature measuring range	5℃～40℃	5℃～40℃	5℃～40℃
Precision	RSD≤0.1%	RSD≤0.1%	RSD≤0.1%
Thermal capacity stability	Change of heat capacity within one year≤0.2%	Change of heat capacity within one year≤0.2%	Change of heat capacity within one year≤0.2%
Accuracy	Better than accuracy required in standard	Better than accuracy required in standard	Better than accuracy required in standard
Temperature resolution	0.0001℃	0.0001℃	0.0001℃
Single sample test time	≤13min(traditional ),≤10min(fast)	≤13min(traditional ),≤10min(fast)	≤13min(traditional ),≤10min(fast)
Temperature sensing technology	√	√	/
Oxygen bomb identification	/	√	/
MCPC module	/	√	/
Water level visibility	/	√	/
Oxygen charging mode	Manual	Manual	Manual
Exhaust mode	Manual	Manual	Manual
Lifting cover opening	Automatic	Manual	Manual
Water volume of outer barrel	22L	22L	22L
Refrigerating water volume	8L	12L	6L
Refrigeration mode	Compressor	Semi-conductor	Semi-conductor
Placement method	Desktop, vertical	Desktop, vertical	Desktop
Working power supply	AC220V±22V/50Hz	AC220V±22V/50Hz	AC220V±22V/50Hz
Power	≤0.5kW	≤0.8kW	0.5kw
Overall dimension (mm)	830×460×470	980×520×480	720×460×420
Total weight	76kg	90kg	45kg

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