1. Compliance with standards
Complies with the national standard "HJ637-2018 Determination of Water Quality, Petroleum and Animal and Vegetable Oils - Infrared Luminescence Method"
2. Principle
According to the HJ637-2018 national standard, fully automatic extraction of oil substances in water is carried out using reagent magnetic stirring, and then an oil-water separation membrane is used instead of anhydrous sodium sulfate to separate impurities and water, separating the solution of oil and reagent, and determining the total oil content of the extract. At the same time, after adsorption and removal of animal and vegetable oils and other substances by magnesium silicate, petroleum is determined.
The total extract and petroleum content were calculated based on the absorbance A2930, A2960, and A3030 at spectral bands with wave numbers of 2930 cm-1 (stretching vibration of C-H bond in CH2 group), 2960 cm-1 (stretching vibration of C-H bond in CH3 group), and 3030 cm-1 (stretching vibration of C-H bond in aromatic ring), respectively.
3. Department using the instrument
Environmental monitoring systems are used in testing rooms and laboratories for petrochemical, hydrological and water conservancy, water supply companies, sewage treatment plants, thermal power plants, steel enterprises, scientific research and teaching in universities, agricultural environmental monitoring, railway environmental monitoring, automobile manufacturing, marine environmental monitoring, transportation environmental monitoring, environmental research, etc.
4. Application scope of the instrument
This instrument is mainly used for measuring the oil content in domestic sewage and industrial wastewater. At the same time, it can also measure the content of petroleum in surface water and groundwater
5. Working structure principle
The EP3000B fully automatic infrared oil analyzer consists of a fully automatic operating software system, an infrared spectroscopy system, and a pre-processing extraction system. The machine adopts a drum type three-dimensional mixing method to extract oil from water, and after removing water and impurities, it flows into a colorimetric dish for measurement. The built-in magnesium silicate adsorption device can measure the content of petroleum and animal and vegetable oils. After the measurement is completed, the instrument will automatically discharge and clean the waste. Fully automated, with no operator exposure to harmful reagents, including automatic sampling, extraction, water and impurity removal, measurement, cleaning, drainage, and data storage.
6Oil content detector in water/fully automatic infrared spectrophotometerindex

6. Technical indicators
project	explain
IDLs	DL<0.05mg/L (measure 11 times blank and calculate 3 times standard deviation)
Water sample measurement range	0.001-1000mg/L (diluted or enriched)
Instrument detection range	(0.05~800)mg/L
repeatability	RSD ≤ 1% (tested 11 times for 20-100mg/L oil standard sample)
Measurement accuracy	Error<± 2%
correlation coefficient	R>0.9995
Volume of water sample taken	5ml-600ml or 5ml-1000ml
Sample size for testing	Continuously test 8-12 samples
Extraction amount of tetrachloroethylene	Integer multiples of 0.01-25ml
Automatic detection time for a single sample	2-8min
Wavenumber range	3400cm-1～2400cm-1(i.e. 2941nm to 4167nm)
Range of absorbance	0.0000-2.0000 AU (i.e. transmittance of 100-1% T)
Wave number accuracy and wave number repeatability	±1cm-1
Net weight of the host	22kg
Use power supply	(220 ± 22) V, (50 ± 1) Hz, 50VA
Use temperature and humidity	Temperature range 1 ℃ -40 ℃, humidity ≤ 80%
external dimensions	75cm x 40cm x 42cm (length, width, height)

Oil content detector in water/fully automatic infrared spectrophotometercharacteristic
1. Fully automated: Fully automated sampling, extraction, water filtration, measurement, automatic waste discharge, cleaning, and continuous production of 8-12 water samples;
2. Extraction and other operations do not require the involvement of analysts, do not come into contact with reagents, and protect the health of operators
3. Standard automatic liquid injection device: reagent 0-50ml can be set arbitrarily, concentration can be automatically diluted, quality control samples can be automatically prepared, and automatic one click locking can be achieved;
4. Compliant with HJ637-2018, the infrared three wavenumber spectrum has accurate calibration and clearly displays the peaks and absorbance generated by the three wavenumbers;
5. Oil water separation method: equipped with an unobstructed oil-water separation membrane with a useful filtration area of over 45mm, dual-mode separation filtration, replacing anhydrous sodium sulfate, and one membrane can be used up to 100 times;
6. Built in 11 inch multi touch computer control terminal, with a small size that can be placed in a standard 1.2-meter fume hood;
7. One click completion: multiple water sample tests can be completed with just one click upon startup, without the need for other operations in between, reducing the workload of operators
8. One click calibration: automatic detection and calibration of blank and standard oil samples, 2-8 multi-point calibration, and single point calibration are all automatically completed;
9. The built-in computer uses the Windows 10 operating system, USB 2.0 interface, can also be connected to a desktop computer for control and operation;
10. Adopting efficient and fast drum three-dimensional positive and negative magnetic stirring extraction, extracting 8-12 water samples simultaneously, fully enclosed and non-volatile;
11. Stable and mature NET4.0 green installation free, automatic wavelength positioning, UV infrared dual system one click switching oil analyzer software, with software copyright certificate
12. The manufacturer is equipped with a standard oil filter, which has a long service life, does not need to be replaced, and does not require the preparation of standard oil reagents
13. The sampling bottle is an extraction bottle with a scale display. It can be directly extracted on the machine without dividing the sample. The extraction method complies with HJ/T91-2002 and is the same as the national standard method;
14. Fault self check: automatically detects whether the pre-processing system has faults when turned on, and automatically checks whether the host has faults. It can be used in a mobile app for easy user operation;
15. It can perform fully automatic detection of total oil, petroleum, animal and vegetable oils, automatically display the remaining amount of magnesium silicate, or automatically fill and replace magnesium silicate;
16. Automatic separation, detection of residual reagent in wastewater and waste reagents, and automatic recycling and reuse of waste liquids, waste reagents, etc;
17. Baseline stability: 0-point automatic real-time adjustment (without baseline drift impact)