LS3700 Copper Tube Oil Content Analyzer

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(I₀/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.

Using environmentally friendly grade reagents to elute hydrocarbon oils from samples, the total oil content is determined by measuring absorbance at three specific wavenumbers: 2930 cm⁻¹ (C-H stretching in CH₂ groups), 2960 cm⁻¹ (C-H stretching in CH₃ groups), and 3030 cm⁻¹ (C-H stretching in aromatic rings). The results are calculated based on these absorbance values to achieve 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 steels,

non-ferrous metal materials, military ships, environmental science, electric power, metal material science, polymer chemistry, coal

structure research, petroleum industry, biomedical science, 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 the requirements of infrared spectroscopy characteristics, 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 spectrum scanning function, high-contrast sample spectra, accurate identification 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, spectrum display, storage, etc.

3. Data can be automatically exported in file format and stored in the reporting system.

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, and also supports three-point measurement.

7. Multiple cleaning agents available for testing.

Technical Parameters:

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

Wavenumber range: 3400 cm⁻¹ ~ 2400 cm⁻¹ (2930, 2960, 3030 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 less than 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: Complete automatic testing based on usage requirements.

2: Provide various environmentally friendly cleaning agents.

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

4: Equip with professional calibration liquids based on the characteristics of metal oils for more accurate testing.