EN
GSA-C3/MPD/STC SF₆ Gas Comprehensive Analyzer (Stirling Chilled Mirror)
GSA-C3/MPD/STC Digital Intelligent Arbitration Grade SF₆ Gas Comprehensive Analyzer with Stirling Refrigeration Chilled Mirror Dew Point Technology, Integrated Purity and Decomposition Products (SO₂/H₂S/CO) Measurement, Built-in Pump-Back System, for 500kV-1000kV UHV SF₆-Insulated Equipment Laboratory and On-Site Arbitration Test.
- Description
- Specifications
- Applications
- Advantages
- FAQ
- Recommended Products
Description
The GSA-C3/MPD/STC is a professional, arbitration-grade 3-in-1 SF₆ gas comprehensive analyzerexclusively designed for high-precision and authoritative condition assessment of SF₆-insulated high-voltage equipment. It fully complies with DL/T 506-2018 (chilled mirror method is the recommended arbitration method), IEC 60480:2019 and GB/T 8905-2012 standards, adopting advanced Stirling refrigeration chilled mirror dew point technology—the gold standard for humidity measurement, which provides absolute physical measurement with no drift and traceable results.
The instrument integrates arbitration-grade humidity (dew point) measurement, high-precision SF₆ purity measurement and decomposition products (SO₂/H₂S/CO) measurement into one unit. One-time sampling completes all test items, reducing gas consumption by 70% compared to using three separate instruments. Its innovative built-in pump-back system can pump the tested gas back into the equipment, minimizing SF₆ emissions and environmental pollution. Equipped with a 7-inch high-resolution color touch screen and intelligent automatic dew point judgment algorithm, it supports real-time display of all parameters and automatic temperature/pressure correction. With a built-in 7.4V/10Ah large-capacity lithium battery, it can work continuously for more than 8 hours, making it suitable for both laboratory arbitration tests and on-site high-precision inspections. Ideal for 500kV-1000kV UHV substation maintenance, third-party testing institution arbitration tests, GIS manufacturer factory type tests, scientific research institute standard laboratories and SF₆ gas recovery quality inspection.
Specifications
| Parameter | Specification |
|---|---|
| Humidity (Dew Point) Measurement | |
| Measurement Principle | Stirling refrigeration chilled mirror method (arbitration grade) |
| Measurement Range | -80℃ ~ +20℃ (dew point) |
| Accuracy | ±0.2℃ (full range) |
| Repeatability | ±0.1℃ |
| Resolution | 0.01℃ |
| Response Time | ≤90 seconds (single point stable) |
| Mirror Cleaning | Automatic heating cleaning function |
| SF₆ Purity Measurement | |
| Sensor Type | Germany Smart-GAS NDIR infrared sensor |
| Measurement Range | 0 ~ 100% SF₆ |
| Accuracy | ±0.2% FS |
| Resolution | 0.01% |
| Decomposition Products Measurement | |
| Sensor Type | Switzerland Membrapor electrochemical sensors |
| SO₂ Range | 0 ~ 1000ppm |
| SO₂ Accuracy | ±5% of reading ± 2ppm |
| H₂S Range | 0 ~ 200ppm |
| H₂S Accuracy | ±5% of reading ± 2ppm |
| CO Range | 0 ~ 500ppm |
| CO Accuracy | ±5% of reading ± 5ppm |
| Resolution | 0.1ppm for all |
| General Parameters | |
| Sampling Method | Built-in pump suction |
| Flow Rate | 0.3 ~ 1.0L/min (adjustable) |
| Gas Consumption | ~2.5L per complete test |
| Pump-Back System | Yes (built-in) |
| Automatic Correction | Temperature and pressure correction to 20℃, 0.1MPa |
| Display | 7-inch high-resolution color touch screen |
| Data Storage | 1000 groups (with time stamp, power-off protection) |
| Data Export | USB interface, PDF/Excel report generation |
| Language Support | Chinese/English bilingual |
| Power Supply | Built-in 7.4V/10Ah lithium battery + AC 220V±10%, 50Hz charger |
| Battery Life | >8 hours continuous operation |
| Charging Time | ~4 hours (full charge) |
| Protection Functions | Over-pressure, Over-current, Low battery, Pump protection, Electromagnetic interference protection |
| Dimensions | 380×280×160mm (L×W×H) |
| Weight | ~5.5kg (including battery) |
| Operating Temperature | -10℃ ~ +50℃ |
| Operating Humidity | ≤90%RH (non-condensing) |
| Altitude | ≤2000m |
| Compliance | DL/T 506-2018 (Arbitration Method), IEC 60480:2019, GB/T 8905-2012, DL/T 941-2021 |
Applications
Core Test Objects
- UHV GIS equipment: 500kV/750kV/1000kV GIS and HGIS equipment
- Large SF₆ circuit breakers: 220kV-500kV live tank and dead tank SF₆ circuit breakers
- SF₆ power transformers: 110kV-500kV SF₆-insulated power transformers
- SF₆ instrument transformers: 110kV-500kV SF₆-insulated CTs and VTs
- SF₆ gas cylinders: New SF₆ gas quality inspection and recovered gas quality verification
- Other SF₆ equipment: SF₆ load switches, disconnectors, surge arresters
Typical Usage Scenarios
- Power companies: UHV substation preventive maintenance and fault diagnosis
- Third-party testing institutions: Arbitration tests and compliance certification
- GIS manufacturing plants: Factory type tests and outgoing quality control
- Scientific research institutes: Standard laboratory calibration and research experiments
- SF₆ gas recycling companies: Recovered gas quality inspection before reuse
- Power engineering companies: UHV project acceptance tests
Advantages
Compliance with International Arbitration Standards
Fully meets DL/T 506-2018 arbitration method requirements, test results are legally valid → can be used as arbitration basis for quality disputes
Stirling Chilled Mirror Gold Standard Technology
Absolute physical measurement, no drift, no aging, traceable to national standards → eliminates measurement disputes, ensures authoritative and reliable results
3-in-1 Integrated Design
One instrument completes all three tests, one-time sampling → reduces test time by 70%, saves gas consumption by 70%
World-Class Imported Sensors
Stirling chilled mirror + German Smart-GAS purity + Swiss Membrapor decomposition products sensors → ensures long-term stability and accuracy of all parameters
Built-in Pump-Back System
Pumps tested gas back into equipment → minimizes SF₆ emissions, protects the environment, saves gas cost
Automatic Dew Point Judgment
Intelligent algorithm automatically identifies dew/frost formation → eliminates manual judgment errors, reduces operator skill requirements
Portable & Long Battery Life
5.5kg lightweight design with 8-hour battery life → suitable for both laboratory arbitration tests and on-site high-precision inspections
Comprehensive Safety Protection
Multiple protection layers + strong anti-interference ability → ensures safe and reliable operation in harsh field environments
FAQ
Q: Why is chilled mirror method the arbitration method?
A: Chilled mirror method is based on fundamental thermodynamic principles, providing absolute measurement results that are not affected by sensor aging, drift or environmental factors. Its measurement results are traceable to national and international standards, making it the only method recognized by DL/T 506-2018 and IEC 60480:2019 for arbitration purposes.
Q: Can the tested gas be pumped back into the equipment?
A: Yes. The instrument has a built-in pump-back system that can pump the tested gas back into the equipment after testing. This not only minimizes SF₆ emissions and environmental pollution, but also saves gas purchase costs, especially for expensive high-purity SF₆ gas.
Q: Does it support automatic temperature and pressure correction?
A: Yes. The instrument has built-in high-precision temperature and pressure sensors, which can automatically correct the test results to standard conditions (20℃, 0.1MPa), making it easy to compare test results with standard values and historical data.
