The stability of flow is crucial for infrared carbon sulfur analyzers, especially for the impact on carbon data. Generally, the relationship between carbon results and flow rate follows the following pattern: as the flow rate decreases, the carbon data tends to be higher, and the release curve tends to be lower and fatter; As the flow value increases, the carbon data is lower, and the release curve is higher and thinner.
The stability of flow is crucial for infrared carbon sulfur analyzer, especially for its impact on carbon data. Generally, the relationship between carbon results and flow rate follows the following pattern: as the flow rate decreases, the carbon data tends to be higher, and the release curve tends to be lower and fatter; As the flow value increases, the carbon data is lower, and the release curve is higher and thinner. The main factors affecting changes in flow rate include the stability of oxygen pressure, the smoothness of the gas path (amount of dust), whether there is air leakage, and whether the flow meter is damaged.
Detection system of infrared carbon sulfur analyzer:
1. Circuit design: The whole machine adopts a dual CPU upper and lower computer modular design, and the lower computer uses Atmega162 as the control microcontroller. The electronic circuit is highly integrated, stable and reliable;
2. Sampling: High speed 24 bit ADS1224 sampling chip is used, with high sampling accuracy;
3. Communication: The upper and lower computers use USB2.0 interface communication, greatly improving communication speed;
4. Connection: The infrared detection part is connected to the electric arc furnace using Agilent 1521/2521 high-speed optical fiber, combined with a multi-level concealed isolation circuit, to eliminate high-frequency interference;
5. Power supply: high-efficiency switch power supply, stable output;
6. Light source: A specially designed new platinum infrared light source with continuous heating and high spectral efficiency;
7. Analysis cell: gold-plated carbon sulfur analysis cell and high-precision pyroelectric infrared detector;
8. Motor: Stepper motor, good thermal stability, continuous service life of 100000 hours.
Maintenance methods for infrared carbon sulfur analyzer
Dust inside the high-frequency combustion furnace: After long-term use of the instrument, a small amount of dust will accumulate inside the instrument, and most of the dust is metal dust, which has conductivity. Because the high-frequency induction furnace is in a high voltage, high-frequency environment, when there is too much dust, it is easy to conduct electricity in the device, causing circuit short circuits, ignition and other phenomena. In severe cases, it can burn out the entire equipment. Therefore, the dust inside the instrument should be cleaned regularly according to the placement environment and sampling frequency, usually every 6-8 months for dust removal Dust removal method: Open the high-frequency combustion furnace panel, brush the high-frequency components and high-frequency chamber with a brush to remove most of the dust, and then blow the instrument with an oxygen tube to blow away the remaining dust Cover the instrument panel again. (Note: During the entire operation, the instrument power should be disconnected and the power cord should be unplugged to avoid accidents.)