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GDL-9560F Transformer Oil Furfural Content HPLC Analyzer
GDL-9560F Digital Intelligent Transformer Oil Furfural Content High Performance Liquid Chromatograph with Dual Gradient Pump, Auto Sampler, Variable Wavelength UV Detector, Built-in Insulation Aging Assessment Model, for Power Transformer Solid Insulation Condition Evaluation.
- Description
- Specifications
- Applications
- Advantages
- FAQ
- Recommended Products
Description
The GDL-9560F is a professional-grade, high-precision laboratory specialized transformer oil furfural content high performance liquid chromatographexclusively designed for solid insulation aging assessment of power transformers, instrument transformers and other oil-filled electrical equipment in power industry laboratories. It fully complies with GB/T 7597-2008, DL/T 1355-2014 and IEC 61198:1993 standards, adopting an optimized binary high-pressure gradient system combined with automatic sampler, column oven and variable wavelength UV detector that provides accurate and reliable furfural content measurement.
The instrument features an innovative multi-processor parallel architecture that ensures high-speed data acquisition and real-time signal processing. Its dedicated reverse-phase C18 chromatographic column is specially optimized for furfural separation, while the variable wavelength UV detector operating at 280nm characteristic wavelength delivers ultra-high sensitivity with a detection limit as low as 0.01mg/L. The built-in insulation paper degree of polymerization (DP) calculation model and transformer life assessment algorithm enable comprehensive evaluation of solid insulation aging degree, and can be combined with DGA data for more accurate fault diagnosis.
Specifications
| Parameter | Specification |
|---|---|
| System Parameters | |
| Compliance Standard | GB/T 7597-2008, DL/T 1355-2014, DL/T 984-2005, IEC 61198:1993 |
| Control Architecture | Multi-processor parallel |
| Operation Mode | Manual / Fully automatic (with auto sampler) |
| Display | 8-inch color LCD touch screen |
| Data Storage | 1000 groups test data + chromatograms |
| Data Export | USB 2.0, Ethernet (TCP/IP) |
| Data Formats | Excel, PDF, AIA (Andi Chromatogram) |
| LIMS Compatibility | Yes |
| Remote Control | Yes (up to 3 independent IP connections) |
| Pump System | |
| Pump Type | Binary high-pressure gradient pump |
| Flow Range | 0.001 ~ 5.000mL/min |
| Flow Accuracy | ±1% |
| Flow Repeatability | ≤0.1% RSD |
| Maximum Pressure | 35MPa |
| Gradient Accuracy | ±0.5% |
| Gradient Steps | 0 ~ 100%, 0.1% step |
| UV Detector | |
| Light Source | Deuterium lamp |
| Wavelength Range | 190 ~ 700nm |
| Wavelength Accuracy | ±1nm |
| Wavelength Repeatability | ≤1nm |
| Baseline Noise | ≤±1.0×10⁻⁵AU (254nm) |
| Baseline Drift | ≤2.0×10⁻⁴AU/h (254nm) |
| Linear Range | ≥1.8AU |
| Detection Cell | 10mm path length, 8MPa pressure resistance |
| Column Oven | |
| Temperature Range | Room temperature -15℃ ~ 60℃ |
| Temperature Accuracy | ±0.1℃ |
| Temperature Resolution | 0.1℃ |
| Pre-heating Function | Yes (mobile phase pre-heating) |
| Automatic Sampler (Standard) | |
| Sample Positions | 10 positions |
| Injection Volume | 0.1 ~ 100μL |
| Injection Accuracy | ≤0.3% RSD |
| Injection Speed | 15s/10μL |
| Furfural Detection Performance | |
| Detection Limit | ≤0.01mg/L |
| Quantitative Accuracy | ≤±3% |
| Repeatability | ≤2% RSD |
| Analysis Time | ~12 minutes per sample |
| Aging Assessment System | |
| DP Calculation | Yes (based on furfural content) |
| Life Assessment | Yes (remaining life prediction) |
| Multi-parameter Diagnosis | Yes (combines with CO/CO₂ DGA data) |
| Aging Grade Classification | Yes (5 grades) |
| Trend Analysis | Yes (historical data comparison) |
| Power Supply | |
| Input Power | AC 220V±10%, 50Hz |
| Power Consumption | ≤1200W |
| Physical Parameters | |
| Dimensions | 550×500×600mm (L×W×H, main unit) |
| Weight | ~55kg (main unit) |
| Housing | Cold-rolled steel with electrostatic spraying |
| Protection Grade | IP40 |
| Operating Temperature | 10℃ ~ 35℃ |
| Storage Temperature | -20℃ ~ +60℃ |
| Humidity | ≤85% RH (non-condensing) |
Applications
Core Test Objects
- Power industry oils: Transformer oil, switch oil, cable oil
- Oil-filled equipment: Power transformers, instrument transformers, reactors, circuit breakers
Typical Usage Scenarios
- Power companies: Transformer preventive maintenance, regular insulation aging assessment, life prediction
- Transformer manufacturers: Factory quality control, type tests, after-sales service
- Oil treatment companies: Insulating oil regeneration quality inspection, aging oil treatment effect evaluation
- Third-party testing institutions: Transformer status assessment, insulation aging diagnosis service
- Power research institutes: Transformer insulation aging mechanism research, life prediction model research
Advantages
Compliance with Latest International Standards
Fully meets GB/T 7597-2008 Chinese national standard, DL/T 1355-2014 industry standard and IEC 61198 international standard → test results are recognized by power systems worldwide
Industry-Leading 0.01mg/L Ultra-Low Detection Limit
High-sensitivity UV detector and dedicated chromatographic column, accurately detects trace furfural content → identifies early insulation aging signs before they cause failures
Built-in Comprehensive Insulation Aging Assessment
Automatically calculates DP value and remaining life, supports multi-parameter comprehensive diagnosis → eliminates the need for professional analysts, reduces skill requirements
Fully Automatic Batch Analysis
Standard 10-position automatic sampler, unattended operation → improves work efficiency by 500% compared to manual injection
±0.1℃ Ultra-High Column Temperature Control Accuracy
Advanced microcomputer temperature control system, pre-heats mobile phase → ensures excellent separation and repeatability of furfural peak
Networked Operation & Remote Management
Built-in Ethernet interface, supports multi-user remote monitoring and data sharing → facilitates laboratory digital management and remote maintenance
FAQ
Q: What is the significance of detecting furfural in transformer oil?
A: Furfural is the characteristic degradation product of cellulose insulation paper in transformers. Its content is directly proportional to the aging degree of the insulation paper. By measuring furfural content, we can calculate the degree of polymerization (DP) of the insulation paper and evaluate the remaining life of the transformer. This is the most reliable method for assessing solid insulation aging, and it complements dissolved gas analysis (DGA) which mainly detects oil aging and electrical faults.
Q: What is the relationship between furfural content and insulation aging?
A: According to DL/T 984-2005 standard:
- Furfural < 0.1mg/L: New or slight aging (DP > 800)
- 0.1 ~ 0.5mg/L: Moderate aging (DP 500~800)
- 0.5 ~ 4.0mg/L: Severe aging (DP 250~500)
-
4.0mg/L: Extreme aging (DP < 250), transformer needs to be replaced or overhauled
Q: How does the sample pre-treatment work?
A: The standard methanol liquid-liquid extraction method is used:
- Take 5mL transformer oil sample into a centrifuge tube
- Add 5mL HPLC-grade methanol
- Oscillate vigorously for 5 minutes to extract furfural into methanol phase
- Centrifuge at 3000rpm for 5 minutes to separate oil and methanol phases
- Take the upper methanol phase, filter through 0.45μm membrane filter
- Inject 10μL into HPLC for analysis
Q: How long does a typical analysis take?
A: A complete analysis including sample injection, separation, detection and data processing takes approximately 12 minutes per sample. With the standard 10-position automatic sampler, it can continuously analyze 10 samples in about 2 hours without manual intervention.
Q: Can it be combined with DGA data for more accurate diagnosis?
A: Yes. GDL-9560F has a built-in multi-parameter comprehensive diagnosis function. It can import DGA data (especially CO and CO₂ content) from gas chromatographs, and combine it with furfural content to calculate more accurate DP values and aging grades. This eliminates the interference of oil oxidation on CO/CO₂ data and significantly improves the accuracy of solid insulation aging assessment.
