Before understanding what toxic gases are produced in sewers, let's first understand why sewers produce toxic and harmful gases?
The feces in the sewer, due to the lack of air circulation, ferment through the sewage and produce a large amount of biogas. And the gas in the sewer is not just one gas, but a mixture of gases. It is mainly composed of toxic gases such as hydrogen sulfide, carbon dioxide, methane, ethane, etc. So if sewer construction workers easily enter the well for construction without prior safety gas testing and a series of safety measures before construction, it is easy to pose a threat to personnel safety.
East Japan Yingneng SK/MIC-800-DK
In response to the complex gas conditions in the construction environment mentioned above, Japan can launch portable handheld and fixed multi in one gas concentration detectors. It can continuously monitor multiple gas concentration devices simultaneously, and is a portable real-time concentration alarm device that uses a sampling tube pump suction. The sensor adopts imported sensors from Xian Jin, and the sensor part uses two-stage high-precision low-temperature drift amplifiers and highly stable power processing circuits to ensure fast detection, accurate measurement, stability, and good repeatability of the instrument, making the instrument meet the international standards for gas detectors and leak detectors. The instrument adopts a large full-color 3.5-inch TFT screen, supporting both Chinese and English graphic menu operations, making it easy for users to operate.
East Japan Yingneng SK/MIC-600-4K
The fixed four in one gas detector from East Japan can be used for 24-hour continuous online monitoring of various gas concentrations on site, displaying concentration and over limit sound and light alarms on site, and can be remotely transmitted with the module. Using a 2.4-inch high-definition color screen to display concentration in real time, and selecting gas sensors from imported brands in the industry and high-precision capacitive digital temperature and humidity sensors from Switzerland according to different detection gases, with advanced circuit design and mature core algorithm processing, it has achieved multiple software copyrights and appearance advantages, thus giving birth to the new generation of multi-functional fixed online four in one gas detector that is currently leading in the industry. It can detect gas concentrations in pipelines, confined spaces, and atmospheric environments, as well as detect gas leaks. The sturdy and durable explosion-proof shell and fluorocarbon paint surface treatment process are suitable for various hazardous areas and corrosive environments with strong acids and alkalis, and are wear-resistant. It can support multi gas and multi range detection, and provide customized products according to user needs. It can achieve sensor interchangeability, offline calibration, and zero point self calibration without the need for tools; Intelligent temperature and zero point compensation algorithms enable the instrument to have better performance and good selectivity, avoiding interference from other gases on the detected gas; 4-20MA、RS485、 Multiple signal outputs such as switch quantity, compatible with various secondary meters, data acquisition modules, PLC, DCS systems, can directly drive electromagnetic valves, fans, detectors and other equipment, and can also drive high-power equipment by driving intermediate relays. Equipped with an infrared remote control, it can achieve cover free operation in dangerous situations, such as modifying alarm points, concentration calibration, zero calibration, factory restoration, etc.
