EN
GDRS-410 Insulating Oil pH Tester (Colorimetric Method, 4-Sample Simultaneous Test, 0.01pH Resolution)
GDRS-410 Digital Intelligent Insulating Oil Water-Soluble Acid pH Tester with 4 Independent Test Stations, High-Resolution CCD Sensor, Fully Automatic Test Process, for Power Transformer Insulating Oil Quality Assessment.
- Description
- Specifications
- Applications
- Advantages
- FAQ
- Recommended Products
Description
The GDRS-410 is a professional-grade, fully automatic insulating oil water-soluble acid pH testerexclusively designed for aging degree assessment of insulating oil used in power transformers, instrument transformers, capacitors and other oil-filled electrical equipment. It fully complies with GB/T 7598-2008, IEC 60296-2003 and ASTM D1534 standards, adopting the internationally recognized colorimetric method that provides accurate and reliable measurement results.
The instrument features four independent test stations that allow simultaneous testing of four different samples, greatly improving test efficiency. Its innovative ARM+DSP dual-core architecture ensures high-speed data acquisition and real-time image processing. The imported high-resolution CCD image sensor provides 0.01pH ultra-high resolution and ≤±0.05pH measurement accuracy. With one-click fully automatic operation, it completes the entire test process including heating, constant temperature control, oscillation, oil-water separation, color development, colorimetric measurement, result calculation and report printing without manual intervention.
Specifications
| Parameter | Specification |
|---|---|
| System Parameters | |
| Compliance Standard | GB/T 7598-2008, IEC 60296-2003, ASTM D1534, DL/T 429.6-2016 |
| Test Principle | Colorimetric method (water-soluble acid extraction + indicator color development) |
| Test Stations | 4 independent test stations |
| Operation Mode | Fully automatic one-click test |
| Display | 7-inch 800×480 color touch screen |
| Data Storage | 1000 groups test results |
| Data Export | USB 2.0 (Excel format) |
| Printer | High-speed thermal printer, 58mm paper width |
| Test Parameters | |
| Test Range | 3.6pH ~ 7.0pH |
| Resolution | 0.01pH |
| Measurement Accuracy | ≤±0.05pH |
| Repeatability | ≤±0.05pH |
| Test Time | ≤25 minutes per batch (4 samples) |
| Sample Consumption | ~50mL per test |
| Temperature Control | |
| Temperature Setting | 60℃ (standard) |
| Temperature Control Accuracy | ±1℃ |
| Temperature Resolution | 0.1℃ |
| Oscillation Frequency | 120 times/min |
| Oscillation Time | 5 minutes (adjustable) |
| Power Supply | |
| Input Power | AC 220V±10%, 50Hz |
| Power Consumption | ≤300W |
| Physical Parameters | |
| Dimensions | 500×400×350mm (L×W×H) |
| Weight | ~25kg (including all components) |
| Housing | Cold-rolled steel with electrostatic spraying |
| Protection Grade | IP40 |
| Operating Temperature | 5℃ ~ +40℃ |
| Storage Temperature | -20℃ ~ +60℃ |
| Humidity | ≤85% RH (non-condensing) |
Applications
Core Test Objects
- Power industry oils: Transformer oil, switch oil, capacitor oil, cable oil
- Oil-filled equipment: Power transformers, instrument transformers, capacitors, circuit breakers, reactors
Typical Usage Scenarios
- Power companies: Transformer preventive maintenance, insulating oil regular testing, aging degree assessment
- Transformer manufacturers: Factory quality control, type tests, after-sales service
- Oil treatment companies: Insulating oil regeneration quality inspection, oil treatment effect evaluation
- Third-party testing institutions: Oil quality testing, performance assessment, quality arbitration
- Industrial enterprises: Internal power equipment oil testing and maintenance
Advantages
Compliance with Latest International Standards
Fully meets GB/T 7598-2008 Chinese national standard, IEC 60296 international standard and ASTM D1534 American standard → test results are recognized worldwide
Industry-Leading 4-Sample Simultaneous Test
Can test four samples simultaneously, improving test efficiency by 300% → saves time and labor costs
High-Precision CCD Colorimetric Technology
Imported high-resolution CCD sensor, 0.01pH ultra-high resolution, ≤±0.05pH measurement accuracy → ensures accurate and reliable test results
One-Click Fully Automatic Operation
Automatically completes all test steps including heating, oscillation, separation, color development and measurement → reduces operator skill requirements and eliminates human errors
Built-In Automatic Cleaning System
Cleans pipelines and test cups automatically after each test → eliminates cross-contamination between samples
Comprehensive Data Management Function
1000 groups data storage, USB export and automatic printing → simplifies data management and report generation
FAQ
Q: What is the principle of colorimetric method for insulating oil pH testing?
A: The principle is based on the reaction between water-soluble acid in the oil and the indicator solution. A certain volume of oil sample is mixed with an equal volume of distilled water, heated to 60℃ and oscillated to extract the water-soluble acid into the water phase. After oil-water separation, a specific indicator (bromocresol green for running oil) is added to the water phase. The color of the solution changes according to the pH value, and the pH value is determined by comparing the color with standard color cards using a high-resolution CCD sensor.
Q: How long does a typical test take?
A: A complete test for 4 samples including heating to 60℃, oscillation, static layering, color development, colorimetric measurement and result printing takes approximately 20~25 minutes. This is much faster than manual testing which usually takes 1~2 hours.
Q: How to calibrate the instrument?
A: The instrument has a built-in standard color card calibration program. Users can place the standard color cards (with known pH values) into the test position, and the instrument will automatically calibrate the colorimetric system. This calibration method is simple, fast and accurate.
Q: Does it require manual addition of reagents?
A: Yes. The user needs to add the oil sample and distilled water to the test cups before starting the test. The instrument will automatically add the indicator solution during the test process. The indicator solution is prepared according to the standard formula and is commercially available.
Q: Can it be used for on-site testing?
A: Yes. GDRS-410 has a compact and portable design with a total weight of only 25kg. It does not require any external auxiliary equipment and can be easily transported to the site for testing. It is suitable for both laboratory and on-site applications.
