Transformer Insulating Oil Trace Moisture Analyzer| XHWS180
The XHWS180 trace moisture analyzer is based on GB/T 7600 standard and adopts the Karl Fischer coulometric titration method, which is the most reliable method for the determination of trace moisture in different substances. It uses the most advanced automatic control circuit with a 32-bit embedded microprocessor as the main control core, embedded with a mini operating system. Therefore, the instrument works more reliably and is more convenient to use, with fast analysis speed, simple operation, high precision and strong automation.
Trace moisture in transformer insulating oil is a key indicator of insulation performance: excessive water content accelerates oil oxidation and reduces dielectric strength. The XHWS180 detects water content from 1μg to 200mg with 0.1μg H2O sensitivity, providing electric power and industrial users with a fast and accurate tool for transformer oil supervision testing.
The instrument is widely used in petroleum, chemical, electric power, railway, pesticide, pharmaceutical, environmental protection and other departments.
Applications & Target Audience: The XHWS180 is positioned as a trace moisture analyzer for transformer insulating oil and process moisture control, distinct from flash point testers (safety index) and BDV testers (dielectric strength) in the same category, as it addresses the insulation performance index of oil. It is engineered for electric power companies' oil testing laboratories performing transformer oil supervision tests, transformer and instrument transformer manufacturers checking incoming insulating oil, insulating oil producers and regeneration plants performing batch QC, large industrial transformer users such as steel and petrochemical plants, and pharmaceutical, chemical and environmental laboratories requiring GB/T 7600 Karl Fischer coulometric moisture determination.
Key Specifications
| Parameter |
Specification |
| Titration Method |
Karl Fischer coulometric titration (coulometric analysis) |
| Test Standard |
GB/T 7600 |
| Display |
Color LCD touch screen |
| Electrolysis Current Control |
0 ~ 400mA automatic control (max. 2200μg/s electrolysis speed) |
| Measuring Range |
1μg ~ 200mg |
| Sensitivity |
0.1μg H2O |
| Accuracy |
10μg ~ 1000μg ±3μg, ≤ 0.3% (1mg) |
| Printer |
Micro thermal printer |
| Power Supply |
220V ± 10%, 50Hz |
| Power Consumption |
< 40W |
| Ambient Temperature |
5 ~ 40ºC |
| Operating Humidity |
≤ 85% |
| Dimensions (LxWxH) |
380 x 310 x 180 mm |
| Weight |
Approx. 6 kg |
Advanced Features
A 32-bit embedded microprocessor is used as the master core, embedded with a mini operating system;
0-400mA automatic electrolysis current control, high accuracy, fast measurement speed, stable and reliable;
Mainboard uses high-quality SMD components, with high integration, simple operation and ultra-long life;
Contains 4 calculation formulas, the measurement results are automatically converted into the required units and can be converted to each other;
Extra large color touch screen and full digital keyboard make operation simpler and data calculation convenient and fast;
With graph curve analysis, it helps to analyze the trend of water content;
Mini thermal printer with time record for easier searching;
With the function of storing blank current, the displayed number is the actual water content in the tested sample, eliminating interference from air moisture;
Switch between Chinese and English at any time;
A new shape based on ergonomics, with innovative and optimized operating software offering different touch experiences.
Applications & Standards
The XHWS180 is applicable to the determination of trace moisture in transformer insulating oil, lubricating oil, solvents, gases and other substances. According to GB/T 7600, the Karl Fischer coulometric method measures water content with high precision and high sensitivity: iodine generated at the anode by electrolysis is directly proportional to the charge, and the instrument automatically controls the electrolysis current up to 400mA based on the water content of the sample, ensuring high precision, high sensitivity and high speed throughout the analysis process.
Each unit is delivered with a warranty certificate and after-sales service support, and customization is available to match specific project requirements.
(1) Color touch screen (2) Printer (3) Electrolysis electrode socket (4) Measuring electrode socket (5) Fixing shaft mounting hole (6) Electrolytic cell seat
(7) RS232 interface (8) Power socket and integrated switch
(1) Grinding plug (2) Cathode chamber (3) Drying tube (4) Sampling cock (5) Stirrer (6) Measuring electrode (7) Electrolysis electrode
FAQ
Q1: What does the XHWS180 measure?
It determines trace moisture in different substances, especially transformer insulating oil, based on GB/T 7600 standard with the Karl Fischer coulometric titration method. The measuring range is 1μg to 200mg with 0.1μg H2O sensitivity, making it an important tool for transformer oil insulation performance supervision.
Q2: How does the Karl Fischer coulometric method work?
Iodine is generated at the anode through electrolysis, and the generated iodine is directly proportional to the amount of charge according to Faraday's law. When the sample is injected into the electrolyte, the water in the sample reacts with the iodine, and the instrument calculates the water content based on the electricity used to electrolyze the same amount of iodine. The instrument automatically controls the electrolysis current up to 400mA for high precision, high sensitivity and high speed.
Q3: What are the accuracy and sensitivity?
The sensitivity is 0.1μg H2O. The accuracy is 10μg ~ 1000μg ±3μg and ≤ 0.3% at 1mg. The instrument also stores the blank current to eliminate the interference of moisture intruding from the air, so the displayed value is the actual water content of the tested sample.
Q4: Is the operation convenient?
Yes. It uses an extra large color touch screen and full digital keyboard with Chinese/English switch at any time. It contains 4 calculation formulas and automatically converts measurement results into the required units. The graph curve analysis helps to analyze the water content trend, and the micro thermal printer prints results with time records.
Q5: Where is it widely used?
It is widely used in petroleum, chemical, electric power, railway, pesticide, pharmaceutical, environmental protection and other departments, including electric power companies' oil testing laboratories, transformer manufacturers' incoming oil inspection, insulating oil producers and regeneration plants, and industrial transformer users for oil supervision testing.
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