ND7860 Series Transformer Oil Chromatography Analyzer-Wuhan Nanxing Electric Power Technology Co., Ltd.

Phone: 400-027-8938

Mobile: 133 9714 9829

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ND7860 Series Transformer Oil Chromatography Analyzer

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Insulating Oil and SF6 Gas Testing Equipment

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ND7860 系列变压器油色谱分析仪

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Product Details

■ Product Overview

The transformer oil chromatography analyzer is suitable for determining the concentrations of dissolved gas components in insulating oil used in power systems, and a single injection is sufficient to analyze the dissolved gases in the insulating oil. 7 Gas component species H2、 CO 、CO2、CH4、C2H4、C2H6、 C2H2( Hydrogen, carbon monoxide, carbon dioxide, methane, ethylene, ethane, acetylene ) A comprehensive analysis of the content, with a minimum detection limit for acetylene reaching 0.1ppm . [Main Testing] :H2 、 CO 、CO2、CH4、C2H4、C2H6、C2H2 As the primary basis for fault diagnosis , It is recommended to test whenever possible. :02 、N2 As an auxiliary judgment ( That is 9 Type of gas )。

■ Product Ingredients

Name	Component	Minimum detection concentration /uL/L
Methane	CH4	0.1
Ethylene	C2H4	0.1
Ethane	C2H6	0.1
Acetylene	C2H2	0.1
Hydrogen gas	H2	2
Carbon monoxide	CO	1
Carbon dioxide	CO2	5

■Product Features

1. Online monitoring H2、 CO 、CH4、C2H4、C2H6、C2H2、CO2、 H20( Optional equipment ) Gas concentration and growth rate :

2. Rapid analysis cycle, with a minimum monitoring interval of 1 hour , Longest 30 Heaven , Users can configure it themselves. ( Recommended as 24 hour )

3. A cyclic sampling method is employed, thereby avoiding any loss of transformer oil due to discharge. ;

4. A vacuum environment and magnetic stirring are employed to achieve rapid oil–gas separation, with a stable degassing rate. ;

5. Employing an exclusive patented cold-trap technology, it completely isolates hydrocarbon contamination, enabling maintenance-free operation of on-site equipment throughout its entire service life.

6. By employing a dedicated high-performance monolithic chromatographic column, the system’s analytical reliability is enhanced, making it suitable for the long-term safe operation of field‑based outdoor equipment.

7. Adopting internationally advanced MEMS Integrated sensor technology, with high detection sensitivity, long service life, and a stable baseline. ;

8. High-stability, high-precision gas detection technology and computational models, with an error margin of ± 10% , superior to offline chromatographs ± 30% of the indicator

9. Adopt TCP/IP Network protocol that enables remote monitoring and diagnostics, as well as remote data browsing and access. ;

10. Automatically identify peak positions in fault gas characteristic curves and perform analysis of the raw spectra.

11. Multiple data display and query methods are provided, along with data reporting and trend chart analysis.

12. Provides multiple fault diagnosis methods, including the improved three-ratio method, the David triangle method, and the cubic diagram method.

13. Equipped with an equipment anomaly alarm function, it significantly enhances the reliable and safe operation of the equipment. ;

14. Installation and maintenance are straightforward; the entire equipment can be installed live without disrupting the transformer’s normal operation.

■ Product Specifications

Technical Specifications	Detailed specifications
Hydrogen Flame Ionization Detector	Detection limit :Mt ≤ 3x10-12 g/s( n-Hexadecane - Isooctane solution )
	Noise : ≤ 5x10-14A
	Drifting : ≤ 1x10-13A/30min
	Linear range : ≥ 106
Thermal Conductivity Detector	Sensitivity :S ≥ 3500 mV/mI/mg( Routine )5000 mV/mL/mg( High sensitivity )
	Noise : ≤ 10 mu V
	Baseline drift : ≤ 30 mu V/30min
	Linear range : ≥ 104
Column oven temperature control	Temperature control range : Above room temperature 4~450 °C
Column oven temperature control	Temperature control accuracy : ± 0.1 °C
Packed-column injector	Temperature control range : Above room temperature 4~450 °C
Packed-column injector	Temperature control accuracy : ± 0.1 °C
Hydrogen flame (FID) Detector	Temperature control range : Above room temperature 4~450 °C
Hydrogen flame (FID) Detector	Temperature control accuracy : ± 0.1 °C

■Product Selection Specification Table

Model number	Functional Parameters
ND7860	Headspace sampler model ,H2 、 CO 、CO2、CH4、C2H4、C2H6、 C2H2(7 seed )
ND7861	( For ethylene oxide use only ) Fully automatic type
ND7862	( For ethylene oxide use only ) Semi-automatic type
ND7863	Nine-component methane CH4 Ethylene C2H4 Ethane C2H6 Acetylene C2H2 Hydrogen gas H2- Carbon monoxide CO Carbon dioxide C02 Oxygen 02 Nitrogen gas N2

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ND7860 Series Transformer Oil Chromatography Analyzer

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