Principle:

When monochromatic light passes through the sample solution, its energy is absorbed. The degree of light intensity absorption is proportional to the concentration of the substance being measured, in accordance with the Lambert-Beer law: A = log(1/T) = log(I?/I) = a × b × c

Infrared spectrometers utilize the absorption characteristics of substances to infrared radiation at different wavelengths, serving as precision optical instruments for molecular structure analysis and hydrocarbon content measurement.

Environmentally friendly reagents are used to elute oil hydrocarbons from the sample. The total oil content is calculated based on the absorbance at three specific wavenumbers: 2930 cm?1 (C-H stretch in CH? groups), 2960 cm?1 (C-H stretch in CH? groups), and 3030 cm?1 (C-H stretch in aromatic rings), enabling precise analysis.

Compliant Standards: JB/T6896-2007 Metal Surface Cleanliness Oil Content Analysis

GB/T28125.2-2020 Residual Oil Testing in Air Separation Processes

HJ637-2018 Determination of Petroleum Content in Water Quality

Application Fields:

Applied in industries such as wire materials, valves, alloys, air conditioning appliances, compressor refrigeration finned copper tubes, special steel, non-ferrous metal materials, military ships, environmental science, electric power, metal material science, polymer chemistry, coal structure research, petroleum industry, biomedicine, biochemistry, fundamental research in inorganic and coordination chemistry, semiconductor materials, daily chemical industry, and other research fields.

Spectral Features:

1. Utilizes imported optical platform system with short optical path and high energy, meeting infrared spectral requirements, offering good stability and high signal-to-noise ratio.

2. Dedicated analysis data system automatically calculates oil content results on the inner wall of copper tubes, eliminating interference from other substances.

3. Features continuous spectral scanning function, high-contrast sample spectra, accurate determination of oil content results, automatic calculation, and storage of up to 100,000 measurement records. Results, test spectra, and set conditions can be queried and printed as test reports, with functions including mathematical statistics, spectral display, and storage.

3. Data can be automatically exported in file format for report storage systems.

4. Complies with national standards for measuring surface cleanliness of metal materials.

5. Automatically sets measurement wavenumbers at 2930 cm?1, 2960 cm?1, and 3030 cm?1, with the option for three-point measurement.

7. Multiple cleaning agents available for testing.

Technical Parameters:

Analysis of residual oil content on metal surfaces, with various environmentally friendly cleaning agents provided.

Wavenumber range: 3400 cm?1 to 2400 cm?1 (2930, 2960, 3030 cm?1 three wavelengths)

Technology: Motor subdivision drive technology

Precision: ppb level micrograms

Blank solvent zeroing: Automatic

Data analysis: Automatic

Basic range: 0~80,000 mg

Minimum detection concentration: 0.001 mg

Baseline drift: < 0.005 AU/30 min

Repeatability: RSD ≤ 0.5%

Linear correlation coefficient: r > 0.999

Absorbance range: 0.0000~4.0000 AU; Wavenumber accuracy: ±1 cm?1

Resolution: 0.001 μm

Maximum measurement concentration: 100% oil

Results: Scanning, 38 seconds per scan; Non-dispersive infrared method: 2 seconds; Fixed-point scanning: 1 second

Temperature: -5~50°C; Relative humidity: 20~95%

Main unit power: (220 ± 22) V, (50 ± 1) Hz, 50 VA

Supporting Services:

1: Perform automatic testing based on user requirements.

2: Provide various environmentally friendly cleaning agents.

3: Automate the analysis process to avoid human exposure to toxic and harmful gases.

4: Offer specialized calibration liquids tailored to the characteristics of metal oils for more accurate testing.