Photoacoustic spectrum SF6 resolvent sensor DKG-SD_北京杜克泰克科技有限公司

Photoacoustic spectrum SF6 resolvent sensor DKG-SD

Photoacoustic spectrum SF6 resolvent sensor DKG-SD

Overview

SF6 electrical combination electrical equipment (GIS) was once considered to be high insulation performance and maintenance-free products. However, there are still some insulation faults in the process of operation. In the case of partial discharge such as corona, spark and arc. SF6 gas in electrical equipment will react with water, oxygen and solid insulation media, and generate various types of decomposition products. And there was a correlation between the decomposition products and partial discharge types. So it is possible to diagnose equipment defect or fault based on gas component analysis.

Technology

DKG-SD series photoacoustic spectrum SF6 resolvent multi-gas analysis sensor. 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 9 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 9 spectral bands in the middle infrared region through narrow band optical filter for gas analysis.

Features

Non-consumable, maintenance-free, non-chemical, non-chromatographic

Measuring chamber with constant temperature and pressure , single point calibration, wide dynamic range

Configurable response time From seconds to minutes

Multi - gas synchronous measurement, high cost performance

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Specification

Range

Gas	Lower limit/ppm	Upper limit/ppm
SO2	0.1	10,000
CO2	1	50,000
CF4	0.1	10,000
CS2	0.1	10,000
CO	0.5	10,000
H2S	5	500,000
HF	0.1	10,000
SO2F2	0.1	10,000
H2O	0%	100%

Annotation: configurable range

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	< 5kg
Dimension	15.2 cm W x 10.5 cm H x 34.9 cm D
Chamber volume	< 30ml
Zero drift	± Limited Detection/ 1 month
repeatability	2% of measurement value( under reference condition)
Range drift	5% of measurement value/ 12 months
Precision	+/- 5% or +/- 2 ppm( take the maximum)
Communication interface	USB (open communication protocol)