The core component of the infrared detection cell using high-efficiency, long-life precious metal micro-infrared light source and metal mirrors; modulation system using a single-chip computer-controlled high-precision stepper motor, to achieve the long-term stability of the modulation frequency; the use of infrared pyroelectric solid cone-type sensors, narrow-band filter, so that the whole machine has a very high detection sensitivity, and can be effective in detecting ppm-level carbon and sulfur content.
High-frequency infrared carbon and sulfur analyzer daily use and maintenance
1, high-frequency infrared carbon and sulfur analyzer to analyze samples of the crucible needs to be heated in the muffle furnace temperature to 1000 degrees to 1200 degrees, constant temperature for 2 hours, the natural cooling to a certain temperature, take out of the desiccator put in the cold to room temperature spare.
2, analyze the low content of the sample used in the tungsten particles need to be in a constant temperature oven, heating to 200 degrees baked for 2 hours, removed in the desiccator cooled and used.
3, high-frequency infrared carbon and sulfur analyzer set up a high-frequency output power regulation, before turning on the instrument power supply, using a multimeter to test the grid voltage, the shift switch to the grid voltage is basically the same as the gear, to start debugging the instrument. The method is of course when the grid voltage of 220V, adjusted to 230V gear for reducing the output power, adjusted to 210 gear for increasing the output power.
4, open the total oxygen valve, open the instrument power supply, according to the technician taught to operate.
5, every day before the instrument shows open power or analyze 200 samples, need to clean the filter and the entire furnace chamber.
6, every day should check the high-frequency furnace directly in front of the desiccant and degreasing cotton. Once found that the desiccant 1/3 reddening or caking, should be replaced immediately. Degreasing cotton used for a long time 1/3 yellow, should also be replaced immediately. Replacement will rotate the screw under the test tube, so that the test tube down to be able to leave the upper end of the surface until the test tube, remove the test tube, replacement, according to the original good tighten, check that there is no air leakage until.
7, the filter should be cleaned once a month, the cleaning method is: according to the above "cleaning method" to take out the filter, and then take out the filter on the next two sealing rings, the dust will be cleaned up, put into the ultrasonic cleaner, add distilled water and detergent in the cleaning tank. Open the ultrasonic cleaner power supply. 30 minutes after removing the filter, with distilled water repeatedly cleaned with anhydrous ethanol cleaning. Finally take out the filter with hairdryer dry or into the oven to dry, loaded with the upper and lower O-ring seals, coated with vacuum silicone grease, according to the original position of the old mother, check that there is no air leakage until.
10, high-frequency infrared carbon and sulfur analyzer should be used every quarter to check the pressure valve after the internal silicone rubber tube, if found to have aging or poor elasticity should be replaced immediately.