1、 Execution standards

HJ637-2018 Water quality - Determination of petroleum, animal and vegetable oils - Infrared spectrophotometric method

2、 Product Overview

The infrared oil analyzer adopts infrared spectrophotometry for measurement. After scanning the spectrum of the sample, it can display and print the spectral and absorption peak wavenumber positions of the sample. It can quickly and accurately measure the total concentration of oil in the water. The instrument is suitable for determining the content of petroleum and animal and vegetable oils in surface water, groundwater, domestic sewage, and industrial wastewater.

3、 Performance characteristics

1. The principle and indicators of the instrument fully comply with the requirements of the national standard "HJ637-2018 Water Quality - Determination of Petroleum, Animal and Plant Oils - Infrared Spectrophotometry".

2. The detachable integrated optical system has a small instrument volume, light weight, and first separates and then absorbs, which meets the requirements of infrared spectroscopy. It has good stability and high signal-to-noise ratio.

3. By using electrically modulated light sources, the heating intensity of the light source is reduced to facilitate system heat dissipation. At the same time, due to the absence of mechanical cutting motion components, the instrument structure is simplified and the reliability of the instrument is improved.

4. The sensor signal processing adopts a phase-locked amplifier circuit, which improves the instrument's signal-to-noise ratio and minimum detection limit.

5. Can verify whether the purity of the extractant meets the measurement requirements.

6. Equipped with spectral scanning function, it displays the absorbance curve within the spectral range used to distinguish interfering substances.

7. Can be used as an infrared spectrophotometer.

8. Extraction agents such as tetrachloroethylene can be used instead of carbon tetrachloride.

9. Unique colorimetric cell structure design, suitable for any colorimetric dish ranging from 1 to 5 centimeters.

10. The structure is simple, and the optical and electrical systems of the instrument are self-contained, with a high degree of integration, thereby improving the reliability and maintainability of the instrument.

11. Easy to operate, just click the mouse to complete a single oil sample measurement.

12. Fast measurement speed, it only takes 30 seconds to measure a sample once.

13. The software has powerful functions, with measurement data and spectra that can be saved to the hard drive, and spectra can be queried and printed at any time. It also has functions such as automatic zeroing and regression equation calculation.

4、 Technical indicators

1. Basic measurement range: (0.0~1000) mg/L (4cm~0.5cm colorimetric dish)

2. Detection limit:<0.0001mg/L (CCl4 extract, measured directly using a 4cm quartz colorimetric dish)

<0.002mg/L (water sample, using extraction ratio of 100:1, 4cm quartz colorimetric dish)

3. Maximum measured concentration: 640000mg/L

4. Measurement accuracy: ± 0.5 (C<10 mg/L) ± 2% (10 ≤ C ≤ 80mg/L)

5. Zero stability: ± 1% for 24 hours

6. Repeatability: ≤ 0.3% (for 40mg/L oil sample)

7. Linear: R>0.999

8. Wave number range: 3400cm-1 to 2400cm-1

9. Absorption range: 0.0000-3.000AU

10. Baseline drift: absorbance<0.001 AU/60 min

11. Dimensions: 550mm × 380mm × 150mm

12. Weight: 15Kg

13. Power supply: AC220V ± 10% 50Hz

14. Environment: 5 ℃~35 ℃ 20%~80% RH