1. Open the lid and add purified water at the bottom of the studio at a ratio of 2 liters of water to 300 liters of the volume of the cabinet; 2. Place the test sample on the sample rack and place it according to national standards; 3. Seal the upper part of the cabinet Add tap water to the water tank, the height is the same as the inner edge of the liner, and cover the box cover; 4. Put the filter material into the filter tank, not too full, just an appropriate amount; 5. Put the exhaust pipe and drain pipe at the rear of the box body Connect it, close the pressure balance valve, exhaust valve, and open the pressure relief valve; 6. Determine the position of the paraffin oil in the sulfur dioxide gas concentration measurement controller in the middle 0; 7. Place the steel cylinder and the sulfur dioxide gas pressure reducing valve and gas concentration measurement Connect the controller inlet valve, and connect the controller outlet valve to the inlet of the box, and close the controller inlet valve and outlet valve. 8. After everything is ready, you can press the power switch and refer to the instrument manual to set the test parameters. At this time, the instrument enters the temperature control working state; 9. Open the sulfur dioxide cylinder valve, adjust the pressure to 0.04Mpa, and then open the sulfur dioxide gas concentration Measure the air inlet valve of the controller, close the air inlet valve, close the cylinder valve, open the air outlet valve of the controller when the scale reaches the required scale, and enter the air outlet valve of the controller. After the sulfur dioxide liquid line returns to 0, close the air outlet valve; 10. The control value of the over-temperature protector is generally set at 55 ℃ to prevent the temperature control instrument from malfunctioning and burning out the cabinet. When the temperature in the working room exceeds 55 ℃, the over-temperature protection will automatically cut off the main power supply. The user should not arbitrarily adjust the protector; 11. After the test, open the waste discharge valve, pressure balance valve, waste discharge switch, waste discharge fan start After working, the waste water discharge valve is opened, and the waste water is diluted with tap water; 12. The total volume of the equipment is about 430 liters, and each time requires about 2.8 liters of water and 2.8 liters of sulfur dioxide gas. 13. Finally, clean the test chamber.
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