EN
GSA-C/MP/RT SF₆ Gas Moisture & Purity Quality Analyzer
GSA-C/MP/RT Digital Intelligent Basic SF₆ Gas Moisture & Purity Quality Analyzer with Vaisala Capacitive Dew Point Sensor, NDIR Purity Sensor, Built-in Pump-Back System, One-Time Sampling, for 10kV-220kV SF₆-Insulated Equipment Daily On-Site Detection.
- Description
- Specifications
- Applications
- Advantages
- FAQ
- Recommended Products
Description
The GSA-C/MP/RT is a cost-effective, field-optimized basic 2-in-1 SF₆ gas quality analyzerexclusively designed for daily routine detection of SF₆-insulated high-voltage equipment. It fully complies with DL/T 506-2018, IEC 60480:2019 and GB/T 8905-2012 standards, adopting a world-renowned Finland Vaisala DMT series polymer capacitive dew point sensor and German Smart-GAS NDIR infrared purity sensor to ensure reliable and accurate test results.
The instrument integrates humidity (dew point) measurement and SF₆ purity measurement into one unit. One-time sampling completes both test items, reducing gas consumption by 50% compared to using two 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 5-inch high-brightness true-color touch screen and intuitive graphical interface, it supports real-time display of all parameters and automatic temperature/pressure correction. With a built-in 7.4V/6Ah large-capacity lithium battery, it can work continuously for more than 6 hours, making it ideal for daily on-site inspections. Ideal for distribution network inspection, substation daily maintenance, factory outgoing inspection and basic acceptance test of ring main units, SF₆ circuit breakers, GIS, instrument transformers and other SF₆-insulated equipment.
Specifications
| Parameter | Specification |
|---|---|
| Humidity (Dew Point) Measurement | |
| Sensor Type | Finland Vaisala DMT series polymer capacitive dew point sensor |
| Measurement Range | -80℃ ~ +20℃ (dew point) |
| Accuracy | ±2℃ (-60℃ ~ +20℃), ±3℃ (-80℃ ~ -60℃) |
| Resolution | 0.01℃ |
| Response Time | ≤5s (63% step change, +20→-20℃ Td), ≤240s (90% step change, -20→-60℃ Td) |
| SF₆ Purity Measurement | |
| Sensor Type | Germany Smart-GAS NDIR infrared sensor |
| Measurement Range | 0 ~ 100% SF₆ |
| Accuracy | ±0.5% FS |
| Resolution | 0.1% |
| General Parameters | |
| Sampling Method | Built-in pump suction |
| Flow Rate | 0.2 ~ 0.8L/min (adjustable) |
| Gas Consumption | ~1.5L per complete test |
| Pump-Back System | Yes (built-in) |
| Allowable Inlet Pressure | 0.13 ~ 3.5MPa (absolute pressure) |
| Automatic Correction | Temperature and pressure correction to 20℃, 0.1MPa |
| Display | 5-inch high-brightness true-color touch screen |
| Data Storage | 500 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/6Ah lithium battery + AC 220V±10%, 50Hz charger |
| Battery Life | >6 hours continuous operation |
| Charging Time | ~3 hours (full charge) |
| Protection Functions | Over-pressure, Over-current, Low battery, Pump protection, Electromagnetic interference protection |
| Dimensions | 320×240×140mm (L×W×H) |
| Weight | ~3.2kg (including battery) |
| Operating Temperature | -10℃ ~ +50℃ |
| Operating Humidity | ≤90%RH (non-condensing) |
| Altitude | ≤2000m |
| Compliance | DL/T 506-2018, IEC 60480:2019, GB/T 8905-2012, DL/T 941-2021 |
Applications
Core Test Objects
- Ring main units: 10kV-35kV SF₆-insulated ring main units and switchgears
- SF₆ circuit breakers: 10kV-220kV pole-mounted and cabinet-type SF₆ circuit breakers
- GIS gas insulated switchgear: 110kV-220kV GIS and HGIS equipment
- SF₆ instrument transformers: 10kV-220kV SF₆-insulated CTs and VTs
- SF₆ load switches: 10kV-35kV SF₆ load switches and disconnectors
- SF₆ gas cylinders: SF₆ gas quality inspection before filling
Typical Usage Scenarios
- Power companies: Distribution network daily inspection and substation routine maintenance
- Ring main unit manufacturing plants: Factory type tests and outgoing quality control
- GIS manufacturing plants: Basic gas quality inspection before delivery
- Power engineering companies: Distribution network construction and renovation projects
- Industrial and mining enterprises: Internal distribution equipment routine maintenance
- Third-party testing institutions: Basic acceptance testing of SF₆ equipment
Advantages
Compliance with International Standards
Fully meets DL/T 506-2018, IEC 60480:2019 and GB/T 8905-2012 standards → test results are globally recognized
2-in-1 Integrated Design
One instrument completes both tests, one-time sampling → reduces test time by 50%, saves gas consumption by 50%
World-Class Vaisala Humidity Sensor
Finland Vaisala DMT series sensor, annual drift <±1℃, long-term stability → ensures reliable and accurate humidity measurement
Built-in Pump-Back System
Pumps tested gas back into equipment → minimizes SF₆ emissions, protects the environment, saves gas cost
Automatic Temperature & Pressure Correction
Automatically corrects results to standard conditions → eliminates environmental influence, ensures result comparability
Portable & Long Battery Life
3.2kg lightweight design with 6-hour battery life → ideal for all-day on-site inspections and remote locations
Simple & Reliable Operation
Intuitive touch screen interface, no professional training required → reduces operator skill requirements, improves work efficiency
High Cost-Effectiveness
Excellent performance at an entry-level price → ideal for small and medium-sized enterprises and basic maintenance teams
FAQ
Q: What is the advantage of using Vaisala capacitive dew point sensor?
A: Finland Vaisala is the world's leading manufacturer of humidity sensors. Its DMT series capacitive dew point sensors have the advantages of fast response speed, high sensitivity, small drift, strong anti-interference ability and long service life (annual drift <±1℃), making them the industry standard for SF₆ gas moisture detection.
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.
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.
