1. Product Introduction

Adopting an integrated design approach, the instrument is compact, easy to carry, and convenient for on-site use, while complying with the national environmental protection standards of the People's Republic of China“HJ637-2018”Water quality - Determination of petroleum, animal and vegetable oils - Infrared spectrophotometric method

2. Technical Principle

according toHJ637-2018Standard, water samplepH≤2Under the conditions of extraction with tetrachloroethylene, determine the oil content; After removing polar substances such as animal and vegetable oils by adsorbing the extract with magnesium silicate, determine the petroleum content. The content of oil and petroleum is determined by the wavenumber, which is2930cm^-1（CH₂Within the functional groupC-HThe stretching vibration of keys2960cm^-1（CH₃Within the functional groupC-HThe stretching vibration of keys) and3030cm^-1(In the aromatic ring)C-HThe absorbance at the stretching vibration of the keyA2930、A2960andA3030Calculate based on the correction coefficient; The content of animal and vegetable oils is the difference between the content of oil and petroleum.

3. Application fields:

Determination of petroleum, animal and plant oils in industrial wastewater and domestic sewage

4. Instrument Features

1) Exclusive safety protection box, its baffleCan serve as an operational testing platform,Convenient to carry, flexible to operateConvenient for field testing.

2) Integrated optical system design, with good stability and high seismic performanceIt can work in a mobile state.

3) Long working hours, equipped with high-power lithium batteries, continuous measurement time greater than8At the same time, it is equipped with an external cable that can be connected to the car power supply for measurement, making the on-site measurement time longer.

4) adopt10Inch industrial tablet computer control, clear display, easy operation

5) Equipped with specialized analysis software, it integrates spectrum analysis, scanning, analysis, and calculation, and has a computer software copyright certificate.

6) Supports serial port, BluetoothWiFiVarious communication methods can be used to flexibly achieve local and remote instrument management and information transmission

7) One stop service, equipped with a dedicated accessory box, can achieve integrated sampling, extraction, and measurement, facilitating on-site measurement.

8) Real time automatic zero adjustment, the computer collects both the signal when the light source emits light and the signal when the light source goes off, achieving real-time automatic zero adjustment, simplifying operation and improving long-term signal stability.

9) High analysis efficiency, instrument in30The analysis and determination of a sample can be completed within seconds.

10) There are many types of applicable reagents: both carbon tetrachloride and tetrachloroethylene are suitable.

5. Technical indicators and parameter performance

Protection level:IP65

Baseline stability:Zero point real-time automatic adjustment (eliminating the impact of baseline drift)

detection limitDL≤0.04mg/L(Determination of blank solution of tetrachloroethylene11Secondary3timesSD)

Repeatability:RSD≤0.6%(30～40mg/LOil standard sample determination11time)

Accuracy error: ≤2%

Linear correlation coefficientr﹥0.999

Wave number range:3400cm^-1～2400cm^-1(i.e2941nm～4167nm）

Absorption range:0.0000～2.0000AU(i.e. transmittance)100～1%T）

Wave number accuracy: ±1cm^-1

Wave number repeatability: ±1cm^-1

Basic measurement range:0.0～800mg/L

Minimum detectable concentration:0.004mg/L(Water sample concentration)

Maximum measured concentration:640000mg/L(Water sample concentration)

Scanning speed: Full spectrum scanning,30second/Secondly;NDIR2second/time

Whole machine weight:15kg

Instrument size:490mm×370mm×210mm

Ambient temperature-5-50℃

Relative humidity:20%-95%

Host power supply power:(220±22)V、(50±1)Hz、50VA

Product Configuration