Introduction: System composition: "HFG-961 Online Sulfide Monitoring System in Ambient Air" consists of an atmospheric sampling pipe, a 19-inch standard cabinet, a gas chromatograph (6U) with a cryogenic concentration device, an online hydrocarbon removal air generator, an online hydrogen generator, and a host It is composed of industrial computer and special software. principle: The ambient air is sampled by vacuum sampling pump under negative pressure. After the sample is removed from the water through the sampling manifold through the online water removal device, it enters the cryogenic cold trap adsorption tube. The adsorption tube is equipped with a treated special adsorbent to adsorb sulfide, and then adsorb The tube rapidly rises to 250°C, so that the carrier gas will enter the pre-column for separation with the thermally resolved mixture. After the target enters the analytical column, the switching valve will blow back the high-boiling compounds, and the other carrier gas will pass the target After the analytical column is separated, it enters the flame photometric detector (FPD) in turn, and the result is quantitatively obtained with standard gas. Features: 1. Imported ten-way valve: small dead volume and high inertia treatment, very small adsorption of sulfide, long life (10mS, 1 million times); 2. All gas paths adopt silanized imported stainless steel pipes to reduce adsorption; 3. Fully automatic sampling and sampling design, which can realize on-line continuous monitoring function; 4. The software specially designed for sulfide has powerful functions. It can visually display several trend graphs of monitoring data, automatically calculate daily average, monthly average, pollution index, etc., and generate reports in the system for storage; the generated data can be uploaded To relevant departments, such as: Central Control Room, Technical Department, Environmental Protection Department, etc.! 5. The chromatograph in the system can be equipped with mechanical valves and a fully electronic flow control module (EPC) to control the gas flow to meet the needs of different users; 6. With multiple signal interfaces: RS232/RS485; 4～20mA; Ethernet 7. The system is easy to install, has strong stability, and has good anti-interference ability! technical parameter: Detection substances: hydrogen sulfide, carbonyl sulfide, methyl mercaptan, ethyl mercaptan, methyl sulfide, carbon disulfide, thiophene, ethyl sulfide, dimethyl disulfide, etc. Detector: Flame Photometric Detector (FPD) Detection limit: 0.01ppm (calculated as H2S) Repeatability: relative standard deviation RSD≤3% Analysis cycle: 15min (depending on the type of sulfide) Power supply Power: 220VAC 50Hz <4KW Working conditions: Ambient temperature: -10～50℃; Ambient humidity: (10%～90%) RH Signal output: RS232/RS485; 4～20mA; Ethernet
Introduction: System composition: "HFG-961 Online Sulfide Monitoring System in Ambient Air" consists of an atmospheric sampling pipe, a 19-inch standard cabinet, a gas chromatograph (6U) with a cryogenic concentration device, an online hydrocarbon removal air generator, an online hydrogen generator, and a host It is composed of industrial computer and special software. principle: The ambient air is sampled by vacuum sampling pump under negative pressure. After the sample is removed from the water through the sampling manifold through the online water removal device, it enters the cryogenic cold trap adsorption tube. The adsorption tube is equipped with a treated special adsorbent to adsorb sulfide, and then adsorb The tube rapidly rises to 250°C, so that the carrier gas will enter the pre-column for separation with the thermally resolved mixture. After the target enters the analytical column, the switching valve will blow back the high-boiling compounds, and the other carrier gas will pass the target After the analytical column is separated, it enters the flame photometric detector (FPD) in turn, and the result is quantitatively obtained with standard gas.
