The control part of the coke reactivity and post reaction strength measurement device adopts Siemens PLC design. If the gas flow rate is measured and controlled by a mass flow controller, not only is the flow rate accurate and reliable, but the computer can also display it at any time. The temperature is automatically controlled by the computer, with any given program. The temperature control methods include open-loop stepper, closed-loop fully automatic, etc;

Technical advantages:
1. Mechatronics design, with bottom mechanical transmission for reactor loading and unloading, simple and convenient installation and operation, in compliance with the national standard GB/T4000-2017;
2. Three stage temperature control, more stable constant temperature zone, and significantly improved furnace usage compared to the previous generation product.
3. The control part of the fully automatic coke reactivity and post reaction strength tester is designed with Siemens PLC. If the gas flow rate is controlled by a mass flow controller, the flow rate is accurate and reliable, and the computer can display it at any time. The equipment is controlled by Siemens PLC and has good stability. The program supports setting any time period;
4. The reactor flange is designed to be non removable, and the thermocouple and gas pipeline are designed to be non insertable, making it more convenient to use.
5. Connecting to a computer can display temperature curves and gas flow curves in real-time; There is an alarm function for insufficient CO2 flow, as well as functions for detecting CO2 pressure, flow rate, purity, etc;
6. Equipped with over temperature protection function, it automatically shuts off after overheating, which can prevent electric furnace burnout or reactor melting caused by silicon breakdown, thermocouple damage, signal interference and other reasons;
7. The self diagnostic system before startup can check whether the furnace, thermocouple, and other main components are normal before each experiment.
8. The system enters the test state and automatically starts the test ventilation system to discharge indoor exhaust gas and ensure indoor air quality;

Technical parameters of coke reactivity and strength determination device after reaction:
1. Electric couple S-type control accuracy: 1100 ℃± 1 ℃;
2. Flow control adopts automatic mode of mass flow meter: N2: 0-10L adjustable; CO2:0-10L adjustable;
CO2； N2 switching (manual, automatic) is fully independent;
Accuracy: ± 1% FS;
Repetition accuracy: ± 0.2% FS;
Response time: Gas characteristics: 1-2S; Electrical characteristics: 0.1S;
Pressure resistance: 1.3Mpa.
3. Reactor material GH44; Reactor size: Inner diameter Φ 80mm.
4. Type I drum: Φ 140mm-700mm; Wall thickness 6mm; 30 minutes ± 1 minute, 600 revolutions per minute, automatic counting and control.
5. Test sieve: 23mm, 25mm, 10mm round hole sieve.
6. Furnace power: 3 * 2.5=7.5KW, constant temperature zone ≥ 300mm.
7. Working voltage: AC380V ± 10%, 50Hz ± 5% three-phase five wire system.
8. Working environment: 5 ℃ ≤ ambient temperature ≤ 40 ℃, humidity ≤ 85%, no strong magnetic field, no severe vibration.
9. Dimensions: Width x Height x Depth=900 x 2000 x 720mm
10. Total weight of equipment: 200kg