Photoacoustic spectrum oil gas analysis sensor DKG-A series
Technical requirements
Transformer on-line monitoring and fault diagnosis technology is very important for improving the safety and stability of power system. The on-line monitoring technology based on dissolved gas analysis in oil is one of the most popular and important on-line monitoring technologies for transformers. Analyzing the composition and content of dissolved gas in oil is one of the most effective measures to monitor the safe operation of oil-filled electrical equipment. Using photoacoustic spectroscopy to analyze dissolved gas in oil to monitor the safe operation of oil-filled electrical equipment has the characteristics of maintenance-free, high real-time and high precision.
Technology
Dkg-A series oil gas analyzer, can achieve multi-component oil gas analysis, Photoacoustic spectroscopy technology can realize high sensitivity measurement of short optical path. Based on patented ultra-high sensitivity optical microphone technology with an enhanced cantilever beam. It can achieve wide range up to 5 levels of linear dynamic range ratio. The ultra-high sensitivity can be achieved by 7 kinds of optical narrowband filters. The extremely narrow optical filter can remove the interference of background gased. Multiple spectral regions can facilitate minimum cross sensitivity. Based on infrared photoacoustic spectroscopy, the multi-gas analyzer has a pulse infrared light source and forms 7 spectral bands in the middle infrared region through narrow band optical filter for gas analysis.
Features
Sub-ppm level Limited Detection
Configurable measurement tasks
High resolution graphic display interface
Rich programmable measurement tasks
Wide dynamic range and stable operation
The hydrogen sensor has a life span of more than four years
Non-consumable, maintenance-free, non-chemical method
User-friendly single point calibration, short optical path
Long calibration cycle (from a few months to a few years)
Configurable response time from seconds to minutes
Independent internal gas exchange system with constant temperature and pressure
Graphs and tables show all gas measurements
Built-in trend view monitoring tasks, no external computer required
Specification
Span
Gas | Lower Limit /ppm | Upper Limit /ppm |
H2 | 5 | 5,000 |
CH4 | 1 | 50,000 |
C2H6 | 1 | 50,000 |
C2H4 | 1 | 50,000 |
C2H2 | 1 | 50,000 |
CO | 5 | 50,000 |
CO2 | 5 | 50,000 |
Water measuring /Humidity | 0% | 100% |
Physical and mechanical
Operation Temp. | +5 - +50°C |
Sample Temp. | 0 - +45°C |
Storage Temp. | -30°C - +80°C |
Humidity | 90%（no condensation @30°C） |
Vibration tolerance | IEC 60068-2-6，Fc test |
Drop/impact | IEC 60068-2-31 and ISTA 1A |
Power supply | 90-250VAC ，47-63Hz |
Weight | < 15kg |
Dimension | 48.4cmW x 13.9cmH x 44cmD (19.1In W x 5.5 in H x 17.3 in D) |
Chamber volume | < 30ml |
Dynamic range | 500-50,000 |
Zero drift | ± Limited Detection/ 1 month |
repeatability | 5% of measurement value( under reference condition) |
Range drift | 5% of measurement value/ 12 months |
Precision | +/- 5% or +/- 2 ppm( take the maximum) +/-1% RH（H2O RH 0-90%） |
Standard
EN61326-1:2006 | Radiation emission (level A) |
EN61326-1:2006 | Conduction emission (level A) |
EN61000-3-2:2000 | Steady state and wave harmonics |
EN61000-3-3:2001 | Flicker test |
IEC61000-4-2:2001 | Electrostatic release immunity test |
IEC61000-4-3:2002 | Radiation immunity |
IEC61000-4-4:2001 | Rapid electrical transient/pulse group immunity test |
IEC61000-4-5:2001 | Surge immunity |
IEC61000-4-6:2001 | Conduct rf immunity |
IEC61000-4-8:2001 | Magnetic field immunity |
IEC61000-4-11:2001 | Voltage sag and interruption |
Others | EN 61010-1:2001 IEC61010-1 UL61010-1 CAN/CSA-C22.2 No.61010-1 EN 50270:2006 |
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