MY501 Oxygen Analyzer

1、 Application Fields

Online analysis of oxygen content in high-temperature sintering furnaces such as air separation nitrogen production industry, chemical processes, magnetic materials, protective gases in the electronics industry, and in metallurgy, glass, and building materials industries.

IIInstruction manual for trace oxygen analyzerInstrument characteristics

Imported fuel cell sensors are selected, which have the characteristics of long lifespan, high accuracy, and fast response

Can be used for measuring trace oxygen in reducing gases such as high-purity hydrogen

Large screen 320 × 240 dot matrix LCD display,

Automatic temperature compensation to eliminate the influence of environmental temperature

The upper and lower limit control points can be set arbitrarily within the full range

IIItrace oxygen analyzerTechnical Parameter

Measurement range: 0-10ppm, 0-100ppm, 0-1000ppm, 0-1%, 0-25%

Accuracy: ≤ 1% F.S (0.00~10 × 10-6);

Repeatability: ≤± 1%;

Sample gas flow rate: 1000ml/min;

Response time: Read within 30 secondsnumber90%；

Resolution: 0.1ppm;

Sample gas pressure: 0.05 MPa ≤ inlet pressure ≤ 0.1 MPa;

Output signal: 4-20mA or 0-1v or 0-10v DC optional;

Working environment: Temperature: -5 ℃ to+45 ℃; Humidity: ≤ 90% RH;

Calibration: It is recommended to use N2 as the background gas and an oxygen content of 80% of the full range for instrument calibration;

Sensor lifespan; 24 months at 25 ℃, 1atm, with an average oxygen content of<1000ppm;

Connector: 1/8”OD card sleeve

Working power supply: DC12V;

Dimensions: 212-290-194mm

Weight: Approximately 2kg

4、 Precautions

1) The supporting pipelines of the analyzer should be sealed, as even small leaks can cause oxygen in the ambient air to diffuse in, resulting in higher measurement values. Although the sample gas pressure is greater than the ambient pressure in the measurement, the oxygen in the sample gas is in trace amounts. According to Ferrari's law, the partial pressure of oxygen is proportional to its volume content. The atmosphere contains about 21% oxygen, which is about ten thousand times lower than the partial pressure of oxygen in the sample gas calculated in PPM. Therefore, the partial pressure of trace oxygen in the gas sample is much lower than that in the atmosphere. When a leak occurs, oxygen in the atmosphere will quickly diffuse from the leak site. Also, the sampling pipeline should be as short as possible, with as few joints as possible, to ensure good sealing of joints and valves. After the pipeline is connected, an air tightness check should be conducted.

2) Copper or stainless steel pipelines are generally preferred for pipeline materials, with polytetrafluoroethylene pipes being the secondary choice. It is prohibited to choose pipes such as milk tubes and white tubes, as their airtightness and material impermeability are too poor, and the measurement error of trace oxygen is too large under standard measurement pressure. 1/8IN， In summary, stainless steel pipes should be selected for cleaning, degreasing, and maintaining a smooth and clean inner wall. For the analysis of trace level (<PPMV) oxygen, stainless steel pipes with polished inner walls should be chosen. The selected valves and fittings should have a minimum dead volume.

3) The sample gas should not contain sulfides, phosphides, or acidic gas components. These components can pose a threat to fuel cells, especially alkaline fuel cells.

4) The measurement position of trace oxygen should be as close as possible to the measurement unit to avoid excessively long pipelines and too many uncertain factors that may affect the reliability of the measurement data.