Portable SF6 Gas Leakage Detector
The ZWLDS is a high-accuracy, portable SF6 gas leakage detector designed for GIS and high-voltage switchgear.
Featuring an imported sensor, flexible probe, and reliable acousto-optic alarms, it accurately identifies leakage points with a sensitivity of up to 3g per year.
Product Overview
The ZWLDS Portable SF6 Gas Leakage Detector is engineered for precise leak hunting in SF6-insulated electrical equipment, including circuit breakers and GIS units.
Utilizing an advanced imported sensor, it quickly detects trace amounts of SF6 gas in the environment.
Its lightweight design, flexible operation, and long-lasting lithium battery make it an essential tool for power supply bureaus, installation teams, and switchgear manufacturing facilities seeking to ensure equipment safety and prevent greenhouse gas emissions.
Functions and Value:
1. High-Sensitivity Detection: Detects SF6 leaks as small as 3g per year, allowing engineers to identify micro-leaks early and prevent costly equipment failures or environmental hazards.
2. Flexible Snaked-Shape Probe: Equipped with an extended, bendable detection probe that easily reaches confined spaces and complex structures within high-voltage switchyards.
3. Rapid Response and Recovery: Features a highly efficient circuit structure that achieves reaction and recovery times of under 10 seconds, accelerating the on-site inspection process.
4. Acousto-Optic Warning System: Integrates a clear LCD digital display with visual and audible alarms. The alarm frequency increases progressively as leak concentration rises, ensuring intuitive localization.
5. Extended Field Operation: Powered by a rechargeable lithium battery capable of providing up to 8 hours of continuous operation, eliminating the need for frequent charging during extensive field inspections.
Technical Details
| Parameter | Specification |
|---|---|
| Model | ZWLDS |
| Measurement Range | 100–2000 ppm |
| Minimum Checked Value | 100 ppm |
| Maximum Sensitivity | 3 g/year |
| Reaction Time | < 10 s |
| Recovery Time | < 10 s |
| Quote Error | ≤±10% |
| Repetition Error | ≤5% |
| Continuous Operation Time | 8 hours |
| Power Supply | Rechargeable lithium battery (AC-DC) |
| Operating Temperature | -5°C to +50°C |
| Ambient Humidity | ≤85% RH |
| Weight | 2 kg |
Model Selection Guide
| Item NO. | Max Current | Measuring Range | Main Features | Recommended Application |
|---|---|---|---|---|
| GDZR-10A | 10A | 100μΩ - 20KΩ | Portable, built-in discharge alarm | Small to medium distribution transformers |
| GDZR-20A | 20A | 10μΩ - 10KΩ | High-speed testing, heat dissipation | Medium-sized power transformers |
| GDZR-40A | 40A | 1μΩ - 2KΩ | Dual-channel measurement, high current | Large-scale power transformers |
| GDZR-40A | Three-Phase 10A | 100μΩ - 10KΩ | Three-phase simultaneous measurement | Yn-type transformers, time-saving |
Recent Work





Parts List
| Item NO. | Max Current | Measuring Range | Main Features | Recommended Application |
|---|---|---|---|---|
| GDZR-10A | 10A | 100μΩ - 20KΩ | Portable, built-in discharge alarm | Small to medium distribution transformers |
| GDZR-20A | 20A | 10μΩ - 10KΩ | High-speed testing, heat dissipation | Medium-sized power transformers |
| GDZR-40A | 40A | 1μΩ - 2KΩ | Dual-channel measurement, high current | Large-scale power transformers |
| GDZR-40A | Three-Phase 10A | 100μΩ - 10KΩ | Three-phase simultaneous measurement | Yn-type transformers, time-saving |
Product Video
Discover how the ZWJD111E BDV Tester simplifies insulating oil diagnostics.

Certificate
Frequently Asked Questions
Contact our engineers for technical support and application guidance.
The instrument features a high-accuracy imported sensor capable of detecting SF6 gas leaks as small as 3 grams per year, making it ideal for checking micro-leaks in GIS equipment.
Yes, the device is equipped with a flexible, snaked-shape probe that can be bent easily to measure hard-to-reach leakage points in complex electrical installations safely.
The built-in rechargeable lithium battery provides up to 8 hours of continuous operation on a single full charge, which is sufficient for extensive daily testing tasks.
It utilizes an acousto-optic warning system. A digital LCD screen shows the real-time concentration value, while a variable-frequency audible alarm and flashing indicator lights warn the user of the leak severity.
Related Products














