Crude Oil Sulfur Content Tester SH0689 Ultraviolet Fluorescence Sulfur Analyzer Petroleum Testing

The SH0689 Ultraviolet Fluorescence Sulfur Analyzer adopts the ultraviolet‑fluorescence measuring principle. Complying with ASTM D5453, SH/T 0689‑2000 and other relevant standards, this instrument is designed to measure total sulfur content in crude oil, distillate oil, liquefied petroleum gas, plastics, petrochemical products, food‑grade materials and more. The sample is injected into a high‑temperature cracking furnace for cracking and oxidation reactions. At approximately 1000 °C, the sample is fully gasified and oxidized, whereby sulfur‑containing compounds are quantitatively converted into sulfur dioxide. Carried by carrier gas, the reaction gas passes through a membrane dryer for moisture removal before entering the reaction chamber. Upon irradiation with ultraviolet light of a specific wavelength, sulfur dioxide absorbs radiant energy, promoting electrons to jump to high‑energy orbits. When these electrons fall back to their ground state orbits, surplus energy is released in the form of fluorescence. This sulfur‑specific fluorescence signal is captured by a photomultiplier tube, and its intensity is proportional to the sulfur mass present in the original sample. The signal is amplified by a micro‑current amplifier and processed by the built‑in computer system, converting light intensity into a corresponding electrical signal. The total sulfur content of the sample is then calculated automatically.

Application Scope

Suitable for total‑sulfur determination of gasoline, diesel fuel, lubricating oil, crude oil, distillate oil, liquefied petroleum gas, fuel gas, natural gas, plastics, petrochemical products, food materials, coal and other samples. It satisfies the sulfur‑testing requirements for China National‑V and National‑VI gasoline and diesel.

Applicable Standards

ASTM D5453, SH/T 0689‑2000, ASTM D4629

Technical Parameters

ASTM D5453 ASTM D7183
Sulfur in Oil Analyzer by Ultraviolet Fluorescence ASTM D5453 Fluorescence Sulfur-in-Oil Analyzer Ultra Low Sulfur Analysis by ASTM D5453 UVF Method

The main features

• computer control operation, can realize man-machine dialogue, data, peak shape can be automatically stored and printed.
• The operating software can be connected with LIMIS system to realize automatic data transmission.
• The instrument adopts a new type of quartz cracking tube, which can increase the injection volume and reduce the measurement error.
• the cooling fan automatic switch, save the trouble of waiting for the sample shutdown, save time and effort.
• The darkroom system adopts the latest foreign technology, and the key components adopt imported detection components, which improves the detection accuracy of the instrument
• the instrument adopts imported membrane dryer to absorb moisture, saving the trouble of replacing magnesium perchlorate frequently, and reducing the problem of air leakage.
• the use of computer control temperature, improve the instrument temperature control precision, and not easy to overtemperature.
• the use of air cooling instead of water cooling, save water resources.
• you can take the existing calibration curve with standard sample calibration for sample analysis.

Technical parameters

Determination range: 0.1 ~ 10000mg/L (PPM)
Lower detection limit: 0.1ppm (sulfur)
Repeatability error: 1.0mg/L < X≤10mg/L, CV ≤±10%
10 mg/L < X Cv plus or minus 5% or less
Air source requirements: high purity oxygen: more than 99.98%;
High purity argon: more than 99.98%
Temperature control range: room temperature ~ 1200℃
Temperature control accuracy: ±1℃
Working power supply: AC220V±10% 50Hz
Environmental requirements: temperature 15 ~ 40℃;
Humidity of 85% or less

Packing list

大概换算公式
1%=10000PPm
1ppm=1mg/L