Bench-top Infrared Oil Analyzer

Traditional component analysis adopts the procedure of sampling first followed by qualitative measurement, which is time‑consuming and fails to obtain measurement data in a timely manner.
The molecular functional groups of most substances can absorb infrared light. By utilizing the absorption and conversion of spectral energy, qualitative analysis and quantitative calculation of internal components can be easily realized.
Based on this fundamental principle, the infrared oil analyzer adopts infrared spectrophotometry. Through spectral scanning of samples, it can display and print the sample spectrum as well as the wavenumber positions of absorption peaks, enabling rapid and accurate determination of the total oil concentration in water bodies.
Definition of petroleum oil:
Under the conditions specified in standard HJ637-2018, substances extracted with tetrachloroethylene or carbon tetrachloride, not adsorbed by magnesium silicate, and exhibiting characteristic absorption at all or part of the spectral bands at wavenumbers of 2930 cm⁻¹, 2960 cm⁻¹ and 3030 cm⁻¹.
Definition of animal and vegetable oil:
Under the conditions specified in standard HJ637-2018, substances extracted with tetrachloroethylene or carbon tetrachloride and adsorbed by magnesium silicate.
In accordance with the recommended methods of the International Organization for Standardization (ISO), China has formulated and issued the environmental standard Water quality — Determination of petroleum oil and animal and vegetable oil — Infrared spectrophotometric method (HJ637-2018) based on infrared photometry.
The standard covers two methods: infrared spectrophotometry and non‑dispersive infrared photometry. At present, infrared spectrophotometry is widely adopted in most domestic applications in China.

INTRODUCTION

SPECIFICATIONS

Application:
The infrared oil meter is suitable not only for monitoring the content of petroleum (mineral oil), animal and vegetable oils, and total oil in various water bodies such as surface water, groundwater, seawater, domestic water, and industrial wastewater, as well as in soil, but is also the instrument recommended by national standards for monitoring oil content in flue gas (cooking fume). In addition, it can be used for purity testing of organic reagents and for measuring the total and partial amounts of organic compounds containing various C-H bonds.

Product Features:

Detachable integrated optical system, small size and light weight. It uses the principle of “spectral separation before absorption”, conforming to the requirements of infrared spectroscopy, with good stability and high signal-to-noise ratio.

Adopts an electrically modulated light source, which reduces the heat generation of the source and facilitates system heat dissipation. At the same time, the absence of mechanical light-chopping moving parts simplifies the instrument structure and improves reliability.

Sensor signal processing uses a phase-locked amplifier circuit, enhancing the signal-to-noise ratio and the minimum detection limit.

Unique cuvette holder design suitable for any cuvette of 1 to 5 cm path length.

Simple structure. The optical and electrical systems are integrated as one unit, offering a high degree of integration, thereby improving reliability and maintainability.

Easy to operate: a single mouse click completes one oil sample measurement.

Fast measurement speed: only 1 minute per sample.

Powerful software functions: measurement data and spectra can be saved to the hard disk, and spectra can be retrieved and printed at any time. Automatic zero adjustment and regression equation calculation are also supported.

Basic measurement range: 0.00～800 mg/L (4 cm～0.5 cm cuvette)
Water sample measurement range: 0.0012 mg/L～64000 mg/L (4 cm cuvette)
Detection limit: <0.0012 mg/L (water sample, using extraction ratio 100:1, 4 cm quartz cuvette)
Repeatability: ≤1% (for 40 mg/L oil sample)
Accuracy: ≤±1%
Linearity: R > 0.999
Wavenumber range: 3400 cm⁻¹～2400 cm⁻¹
Absorbance range: 0.0000～2.000 AU
Basic measurement range: 0.0012 mg/L～100 mg/L (4 cm cuvette)
External dimensions: 550 mm × 380 mm × 150 mm
Weight: 15 kg
Power supply: (220±22) V, (50±1) Hz, 35 VA