GLM SF6 Leakage Monitoring System
GLM is special for testing indoor GIS SF6 gas leak, and monitoring of the concentration of the device allows its biggest. GLM have double independent adjustable alarm Settings, and can be easily access the existing monitoring/control system, is the ability of your security personnel safety and reduce greenhouse gas emissions SF6 ideal tool.
• Indoor air SF6 gas monitoring and the content of sulfur limit alarm;
• Indoor air oxygen content monitoring and low alarm;
• SF6 gas content too high compulsory exhaust alarm in since the launch;
• The fieldbus communication interface and simulated output, support remote monitoring.
• Do not contain radioactive measuring element, safe environmental protection;
• Basic free maintenance (once every two years calibration), no vulnerable parts;
• And other gas no cross sensitivity;
• No material consumption, improve operation convenience;
• High sensitivity (1 PPMV), effectively capture small leakage defects;
• Height can be independent regulation alarm;
• Provide two convertible contact state output relay;
• Analog output support 4-20 mA or 0 to 20 mA;
• Both oxygen content monitoring function, the greatest degree ensure safety and security.
| Measuring principle | Double beam infrared spectrometer (NDLR) |
| sensitivity | 1 PPMV and other gas no cross sensitivity; Not by humidity affect: 0-100% rh, no gel; No poisoning symptoms |
| response | T90 = 30 seconds |
| Measuring unit | The measuring unit PPMV, range: 0-5000 PPMV |
| Measurement accuracy | Plus or minus 5% < 2000 PPMV plus or minus 2% > 2000-5000 PPMV |
| repeatability | < 0.3% |
| Preheating time | 3 minutes (initial), 40 minutes (complete specifications) |
| Power supply requirements | 88 V-138 V AC 172 V or 276 V AC (switch choose) with CE mark |
| Warning device | Audio and video |
| Control assembly | Set 1 and 2 adjustment, the set visual designated 1 button, can adjust fixed-point 2 button, the LED indicator and monitor test button |
| Bit switch parameters | |
| Simulation (current) output | 0 to 20 mA or 4-20 mA, linear or than a straight line output |
| Alarm set | Alarm 1 high/low, alarm 2 high/low, alarm 1 normal/atresia buzzer, from two alarm or only in alarm 2 sound, low flow alarm (flash) or low flow alarm (audio alarm) |
| Visual display | Four digital LCD, warning is 1, the alarm 2 LED, LED fault LED, low flow/zero flow LED |
| Relay contacts | Volt-free change contact resistance load @ 24 V DC = 8 A resistive load @ 250 V AC = 8 A |
| Characteristics of the pump | Typical velocity: 1 litres/minute, maximum sampling range: 30 m |
| temperature | Storage:-60 ℃; 10- Work: 0-40 ℃ |
| size | SF6 gas leakage monitor ontology: 267 x 258 x 148 mm |
| weight | SF6 gas leakage monitor ontology: 2.5 kg |