Photoacoustic spectrum oil gas analysis sensor DKG-A series

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 光声光谱油中气体分析仪.png

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