Semiconductor technology The hydrogen sulfide detector is designed to monitor the concentration of hydrogen sulfide gas in the ambient air, and its measurement ranges from standard type 0-20 / 50/100 ppm (can be adjusted at work on site) to high measurement range 10,000 ppm . This product adopts solid metal oxide semiconductor sensing technology. The hydrogen sulfide sensor consists of two sheets: one is a heating piece, and the other is a gas sensitive sheet that is sensitive to hydrogen sulfide gas. Both sheets are mounted on a silicon chip in a vacuum coating. The heating sheet increases the working temperature of the gas sensitive sheet to the level that can react to the hydrogen sulfide gas. There is a metal oxide on the gas sensitive sheet, which can dynamically show changes in the concentration of hydrogen sulfide. Its sensitivity can be one hundred percent of one percent.
The hydrogen sulfide sensor provides users with a number of output signal selection schemes. The multi-channel controller is based on microprocessor, programmable logic controller, microcomputer, can be applied to any system and network.
The hydrogen sulfide sensor adopts an electrochemical H2S sensitive original. When the actual measurement is measured, the H2S gas that is expressed in the environment is diffused through the filter dust cover into the electrode having a constant potential through the filter dust cover, and the anodized reaction in the electrode catalyst is formed under the electrode catalyst. The electrons released on the working electrode produces a current ratio of the H2S concentration to the detection circuit temperature compensated, and then enter the microcontroller to process a frequency (current) signal that is consistent with the measured hydrogen sulfide value after the detected circuit temperature compensation. Station, simultaneously realizing the normally sulfide digital display. The hydrogen sulfide signal of the delivery station is sent to the control center station through the communication interface device and cable to achieve continuous real-time monitoring of underwater hydrogen sulfide.
Hydrogen sulfide H2S sensor features
1, the whole machine is small, heavy
2, professional selection of imported sensors, can be equipped with electrochemistry, catalytic combustion, infrared principle, thermal conductivity sensor
3, high precision: high resolution response quickly
4, this safety circuit design, can with electric thermal plug operation
5, data recovery, exempt from the incorrect operation
6, automatic temperature and humidity compensation function, factory precision calibration, no need to use calibration
7, analog voltage or current and serial colleagues output, convenient customer debugging and use
8. The most sophisticated circuit design and manufacturing process, complex production, simple use
9, can be connected to the computer, calibration calibration
Finally, I recommend two hydrogen sulfide sensors in high quality water quality sensors imported from foreign imports from foreign imports, first of all, from Germany AMT, the H2S, H2S sensor based on electrochemical amps, can be on site. Quickly analyze the hydrogen sulfide (H2S) / sulfide dissolved in natural water. The H2S gas diffuses into the sensor by a gas permeability film, and then an oxidation reaction occurs on the surface of the working electrode in the sensor, and quantitative analysis is performed by recording the current signal associated with the H2S content. When the H2S / sulfide concentration (pH 5 - 8.5) is measured, the pH of the sample and the temperature value are required, and the output signal of the sensor is compensated by the electronic device, the measured value is corrected with the temperature of the temperature (temperature compensation) . The sensor can be applied to measurements of on-site water depth of 100 meters, and can also be used in laboratory testing.
The last one is also an imported water sensor-H2S, completely dissolved sulfide (dissolved H2S, H2S, H2S, H2), is one of the most important parameters of natural water and wastewater in the industry. Due to the evaporation of toxic H2S, in order to avoid any hazard, the concentration of sulfide dissolved in water must be observed to avoid any danger. The H2S can prevent oxygen transmission enzyme that causes death due to internal focus. On the other hand, a fully dissolved sulfide concentration is a very interesting parameter for scientists of several science sectors. They use this parameter to assess the natural lake, but can also be used to understand volcanic activities. However, it is difficult to exchange fast concentrations of hydrogen hydrogen sulfide in a rapid concentration of oxygen, and liquid samples and gaseous (mainly air), which are rapidly exchanged between oxygen and liquid samples and gaseous (mainly air). Although sampling and determination have been very cautious, the results are still uncertain, and most disappointing. All of these disadvantages can be avoided if the new underwater H2S / sulfate-Ide detector is used to accurately and reliably determine the determination of the depths of 100 meters deep. Read more
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