EN
GSA-M/RCF Portable Capacitive SF₆ Gas Dew Point Meter
GSA-M/RCF Digital Intelligent Portable Capacitive SF₆ Gas Dew Point Meter with Finland Vaisala DRYCAP® Series Sensor, 3s Fast Response, Built-in Pump-Back System, 1.8kg Ultra-Light Weight, for 10kV-220kV SF₆-Insulated Equipment Quick On-Site Humidity Detection.
- Description
- Specifications
- Applications
- Advantages
- FAQ
- Recommended Products
Description
The GSA-M/RCF is a cost-effective, field-optimized single-function portable SF₆ gas dew point meterexclusively designed for quick humidity 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 DRYCAP® series polymer capacitive dew point sensor to ensure long-term stability and reliable test results.
The instrument features a single-function focused design with intuitive one-button operation, requiring no professional training. Its industry-leading 3-second fast response enables real-time humidity detection, greatly improving inspection efficiency. The innovative built-in pump-back system can pump the tested gas back into the equipment, minimizing SF₆ emissions and environmental pollution. With an ultra-light weight of only 1.8kg and ergonomic handheld design, it supports one-hand operation even in narrow spaces and high-altitude environments. The built-in 7.4V/5Ah large-capacity lithium battery can work continuously for more than 8 hours, making it ideal for all-day on-site inspections. Ideal for distribution network daily inspection, substation quick fault Investigation，SF₆ equipment factory outgoing spot check 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 DRYCAP® series polymer capacitive dew point sensor |
| Measurement Range | -80℃ ~ +20℃ (dew point, <0℃ output is frost point) |
| Accuracy | ±2℃ (full range) |
| Annual Drift | ≤±1℃ |
| Resolution | 0.01℃ |
| Response Time | ≤3s (63% step change, +20→-20℃ Td), ≤45s (90% step change) |
| General Parameters | |
| Sampling Method | Built-in pump suction |
| Flow Rate | 0.2 ~ 0.6L/min (adjustable) |
| Gas Consumption | ~0.8L per complete test |
| Pump-Back System | Yes (built-in) |
| Allowable Inlet Pressure | 0.1 ~ 1.0MPa (absolute pressure) |
| Automatic Correction | Temperature and pressure correction to 20℃, 0.1MPa |
| Display | 3.2-inch high-brightness HD LCD screen |
| Data Storage | 200 groups (with time stamp, power-off protection) |
| Data Export | USB interface, Excel report generation |
| Language Support | Chinese/English bilingual |
| Power Supply | Built-in 7.4V/5Ah lithium battery + AC 220V±10%, 50Hz charger |
| Battery Life | >8 hours continuous operation |
| Charging Time | ~2.5 hours (full charge) |
| Protection Functions | Over-pressure, Over-current, Low battery, Pump protection, Electromagnetic interference protection |
| Dimensions | 220×130×70mm (L×W×H) |
| Weight | ~1.8kg (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 quick fault Investigation
- Ring main unit manufacturing plants: Factory outgoing spot check and 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
World-Class Vaisala DRYCAP® Sensor
Finland Vaisala original 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
Ultra-Simple One-Button Operation
No professional training required → reduces operator skill requirements, suitable for front-line inspection personnel
Long Battery Life
8-hour continuous operation on a single charge → sufficient for a full day of on-site inspections
High Cost-Effectiveness
Excellent performance at an entry-level price → ideal for large-scale deployment in distribution networks
FAQ
Q: What is the advantage of using Vaisala DRYCAP® sensor?
A: Finland Vaisala is the world's leading manufacturer of humidity sensors. Its DRYCAP® series capacitive dew point sensors have the advantages of fast response speed, high sensitivity, small drift (annual drift ≤±1℃), strong anti-interference ability and long service life, 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.
