1、 Application Graph: Cross domain Penetration from Ten Thousand Meter Trench to Spacecraft

1. Marine resource development

-The "Striver" manned submersible is equipped with the CSIC HY-1000 waterproof oxygen sensor, which monitors the oxygen concentration inside the cabin in real-time (19.5% -23.5% safe zone) and can withstand 110MPa ultra-high pressure

-Deep sea aquaculture factory ship: Tongwei Group deep-water cage uses Mettler S8 analyzer, the monitoring accuracy of dissolved oxygen is 0.01mg/L, and the cost of bait feeding is reduced by 30%

2. Energy industry

-Sinopec Qingdao LNG Storage Tank: Explosion proof SST Fluorescence Oxygen Analyzer from the UK, capable of detecting trace amounts of oxygen (<1ppm) in liquid natural gas at -162 ℃ to prevent low-temperature embrittlement

-Three Gorges Power Plant Generator Hydrogen Cooling System: Focused Technology GAS-3100 Waterproof Monitoring for Oxygen Content in Hydrogen, Accuracy 0.01% to Prevent Explosion

3. Biopharmaceuticals

-30 ton fermentation tank of WuXi Biologics: Hamilton VisiTherm DO waterproof probe, resistant to steam sterilization at 121 ℃, cell culture dissolved oxygen control ± 3%

-Mobile oxygen production cabin: Yuyue Medical adopts IP67 level sensors, and the monitoring error of blood oxygen concentration in high-altitude environments (5000 meters) is less than 0.5%

4. Special Environment

-Space Station "Ask the Sky" Module: Ceramic Solid State Electrolyte Sensor, Anti Radiation Design, Oxygen Circulation System Control Accuracy ± 0.1kPa

-Kunlun Station in Antarctica: Ultra low temperature self heating continuous operation at -80 ℃, supporting the study of ancient oxygen in ice cores

2、 Iron rule of selection: Waterproof ≠ omnipotent, scene based matching rule

Users need to be alert to four major misconceptions:

1. Media compatibility:

Gold electrode sensors (such as ABB AO2000) should be used in environments containing hydrogen sulfide, as ordinary palladium electrodes may become toxic and ineffective

2. Pressure limit:

Deep sea applications must confirm the pressure compensation range (such as Endress+Hauser Oxymax W COS61 supporting 100 bar)

3. Flow velocity interference:

Pipeline installation should ensure a flow rate of 3-5m/s, as too low a flow rate can cause response lag (recommended for fermentation tanks with plug-in probes)