1、 Instrument Introduction

Traditional component analysis involves sampling first and then measuring qualitatively, which takes a long time and cannot obtain measurement data in a timely manner. And the molecular functional groups of most substances can absorb infrared light, making it easy to conduct qualitative analysis and quantitative calculation of internal components through the absorption and conversion of spectral energyInfrared oil analyzer DS-OIL6It is based on this principle that infrared spectrophotometry is used for measurement. By scanning the spectrum of the sample, the spectral and absorption peak wavenumber positions of the sample can be displayed and printed, and the concentration of oil in the water can be quickly measured.

The definition of petroleum is: a substance extracted with CCl4 under the conditions specified in the standard GB/T16488-1996, which is not adsorbed by magnesium silicate, and has characteristic absorption at all or part of the spectral bands with wave numbers of 2930cm-1, 2960cm-1, and 3030cm-1. The definition of animal and vegetable oils is: substances extracted with CCl4 under the conditions specified in the standard GB/T16488-1996 and adsorbed by magnesium silicate. According to the recommended methods of the Organization for Standardization (ISO), China has formulated and promulgated the national standard "Determination of Water Quality for Petroleum and Animal and Vegetable Oils by Infrared Spectroscopy" (GB/T 16488-1996) based on infrared photometry. This standard includes two methods, infrared spectrophotometry and non dispersive infrared spectrophotometry, but currently in China, most of them use infrared spectrophotometry.

Infrared oil detectors are not only suitable for monitoring the content of petroleum (mineral oil), animal and vegetable oils, and total oil in various water bodies and soils such as surface water, groundwater, seawater, domestic water, and industrial wastewater, but also for detecting the purity of organic reagents and measuring the total amount and content of organic compounds containing different C-H bonds.

IIInfrared oil analyzer DS-OIL6Instrument characteristics
1. 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.
2. Adopting electrically modulated light source reduces the heat generation intensity of the light source 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.
3. The sensor signal processing adopts a phase-locked amplifier circuit, which improves the instrument's signal-to-noise ratio and low detection limit.
4. The design of the colorimetric cell structure for # # is suitable for any colorimetric dish ranging from 1 to 5 centimeters.
5. 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.
6. Easy to operate, just click the mouse to complete one oil sample measurement.
7. Fast measurement speed, measuring a sample only takes 1 minute.
8. The software has powerful functions such as automatic zeroing and regression equation calculation. Measurement data and spectra can be saved to the hard drive, and spectra can be queried and printed at any time.

3、 Main technical indicators

1. Detection range<0.12mg/L (CCl)₄Extract solution, measured directly using a 4cm quartz colorimetric dish)

<0.0012mg/L (water sample,Using an extraction ratio of 100:1 and a 4cm quartz colorimetric dish

2. Basic measurement range: 0.12 mg/L~100mg/L (CCL4 extract, 4cm colorimetric dish)

0.0012-800mg/L (water sample, low concentration is measured using an extraction ratio of 100:1 and a 4cm quartz colorimetric dish, high concentration is measured using a 0.5cm quartz colorimetric dish)

3. The measured concentration can reach 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 ≤ 0.4% (for 40mg/L oil sample)

7. Linear R>0.999

8. Wave number range 3400cm^-1～2400cm^-1

9. Absorption range 0.0000-3.000AU

10．Baseline drift absorbance<0.001 AU/60 min

11. External dimensions 550mm × 380mm × 150mm

12. Weight 15Kg

13. Power supply (220 ± 22) V (50 ± 1) -60Hz 35VA

14. Environment 5 ℃～35℃ 20%～80%RH

4、 Precautions for using the instrument:

1The instrument should be preheated for 30 minutes before measurement.
2The CCl4 used in the oil analyzer should be of analytical purity or above and purified by activated carbon filtration or distillation. It can only be used after being verified as qualified by the instrument. The verification method can refer to the relevant parts of this manual.
When operating the instrument, experimental gloves should be worn, ventilation facilities should be turned on, and air circulation should be maintained to prevent the volatilization of carbon tetrachloride from causing damage to the human body,.
4The optical components of lighting should be avoided from being touched by human hands and dust contamination should be avoided as much as possible. If the optical mirror is stained with fingerprints or dust, it can be rinsed with * or acetone under the guidance of technicians. For gratings, this cleaning method is not possible and requires professional maintenance.
5The oil testing file is saved in the c: oildatadat directory and needs to be backed up frequently on other drives to the oildata folder.
If any abnormal phenomena are found during the operation, the power supply of the instrument host and microcomputer can be turned off, and then restarted to work.

5、 Instrument storage and usage conditions:

（1） Normal environmental conditions for instrument use

1. Environmental temperature: 5 ℃~35 ℃
2The relative humidity is not greater than80%
3. The instrument should be placed in a laboratory that is free of corrosive gases, strong electromagnetic interference, well ventilated, and dust-free.
4. Power supply:(220±22)V AC 50Hz
5. Areas with unstable power supply should be equipped with regulated power supply.
6The power supply should be well grounded.

（2） Transportation and Storage

1The storage temperature of the product under its original packaging conditions is5~35℃ relative humidity not exceeding80%.
2During transportation, instruments should avoid strong vibrations and collisions.