GC-9760A Portable Gas Chromatograph for Transformer Oil DGA

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GC-9760A Portable Gas Chromatograph for Transformer Oil Analysis

Product ID：GYSP004

Price: Please inquire PDF Format

Supply Ability:50SETS/MON

Port:SHENZHEN

Product Introduction
Other information

Model NumberGC-9760A

Brand NameSHHUAAI

Payment TermsTT，PAYPAL，Alibaba.com Pay

GC-9760A Portable Gas Chromatograph for Transformer Oil Analysis

Product Introduction
The GC-9760A Portable Gas Chromatograph is designed for rapid on-site analysis of dissolved gases in transformer insulating oil. Its compact, modular structure makes it suitable for field testing, helping electrical maintenance teams obtain timely analytical data for transformer condition monitoring and fault assessment.
Using a classic three-detector analytical workflow, the GC-9760A performs gas component analysis from a single sample injection. The listed target gases include hydrogen (H₂), oxygen (O₂), methane (CH₄), ethylene (C₂H₄), ethane (C₂H₆), acetylene (C₂H₂), carbon monoxide (CO), and carbon dioxide (CO₂).
Digital pressure and temperature displays allow users to monitor operating conditions through the workstation. The instrument also features digital FID signal zero adjustment and an explosion-proof FID detector design to support stable measurement and safer operation.
With its portable format and field-oriented workflow, the GC-9760A helps reduce the need to transport samples to a central laboratory for every routine analysis.

Performance Features
• On-site transformer oil DGA: Designed for rapid analysis of dissolved gases in transformer insulating oil.
• Single-injection analysis: Uses a three-detector workflow to analyze the listed gas components from one sample injection.
•Compact and lightweight design: Modular construction supports transportation and field testing.
• Digital gas pressure monitoring: Pressure sensors provide digital readings of gas-path pressures, including nitrogen, hydrogen, and air.
• Digital temperature monitoring and control: The workstation displays and controls temperatures for the column oven, detectors, conversion furnace, and other relevant components.
• Digital FID zero adjustment: Electronic baseline compensation helps reduce interference associated with mechanical potentiometer wiring.
• Enclosed FID detector: The explosion-proof detector housing is designed to contain an internal ignition or explosion under specified design conditions.
• Computer-based operation: The workstation provides access to operating parameters for convenient monitoring and adjustment.

Working Principle
The GC-9760A uses gas chromatography to separate dissolved gas components extracted from transformer insulating oil. After sample introduction, the gas components pass through the chromatographic separation system and are directed to the appropriate detectors in the three-detector workflow.
The instrument uses a thermal conductivity detector (TCD) and a flame ionization detector (FID) as part of its detection system. The detector signals are processed to generate chromatographic results that support identification and quantification of the target gases according to the applicable analytical method.
Digital pressure and temperature monitoring helps operators maintain suitable analytical conditions. Electronic FID zero adjustment compensates for baseline signals through digital circuitry, helping improve signal stability and reduce electrical interference.

Technical Specifications
General Specifications

Parameter	Specification
Model	GC-9760A
Product Type	Portable gas chromatograph
Primary Application	On-site dissolved gas analysis of transformer insulating oil
Analytical Workflow	Three-detector workflow
Sample Injection	Single injection for the listed gas analysis workflow
Target Gas Components	H₂, O₂, CH₄, C₂H₄, C₂H₆, C₂H₂, CO, CO₂
Gas Pressure Display	Digital pressure-sensor readings
Temperature Monitoring	Digital display and workstation control
FID Signal Adjustment	Digital electronic zero adjustment
FID Design	Enclosed explosion-proof detector housing
Dimensions	450 × 430 × 230 mm
Weight	Less than 15 kg

Thermal Conductivity Detector (TCD)

Parameter	Specification
Detector Type	Thermal Conductivity Detector
Baseline Noise	≤20 μV
Baseline Drift	≤100 μV/30 min
Linearity	≥10⁴

Flame Ionization Detector (FID)

Parameter	Specification
Detector Structure	Semi-diffusion structure
Collector	Cylindrical collector design
Nozzle	Quartz nozzle
Power Supply	Constant-current control
Ignition	Automatic ignition
Stabilization Time	10 minutes
Sensitivity	≥2500 mV·mL/mg (n-hexadecane/isooctane)
Detection Limit	≤8 × 10⁻¹² g/s (n-hexadecane/isooctane)
Baseline Noise	≤2 × 10⁻¹³ A
Baseline Drift	≤2 × 10⁻¹² A/30 min
Linearity	≥10⁶

Note: Detector performance values are reproduced from the supplied specifications. Confirm the applicable test method and units with the manufacturer before using them for procurement or method validation.

Application Scenarios
• Transformer maintenance: Field testing of dissolved gases in insulating oil.
• Electrical utilities and substations: Routine transformer condition monitoring and maintenance inspections.
• Transformer fault assessment: Supporting the evaluation of gas patterns associated with possible internal faults.
• Power equipment service providers: Portable gas analysis during inspections and maintenance operations.
• Transformer manufacturing and testing: Supporting oil testing and quality assessment.
•Electrical laboratories: Supplementing laboratory-based dissolved gas analysis with on-site measurements.

GC-9760A vs. Conventional Laboratory Gas Chromatographs

Comparison Item	GC-9760A Portable Gas Chromatograph	Conventional Laboratory Gas Chromatograph
Primary Use	Transformer oil dissolved gas analysis in the field	General laboratory gas analysis, depending on configuration
Portability	Compact design, less than 15 kg	Depends on instrument size and configuration
Sample Analysis	Single-injection, three-detector workflow	Depends on analytical configuration
Pressure Monitoring	Digital pressure readings through workstation	Depends on model
Temperature Control	Digital monitoring and workstation control	Common on many laboratory systems, with features varying by model
FID Signal Adjustment	Digital electronic zero adjustment	Depends on detector electronics
Typical Users	Transformer maintenance teams and field testing personnel	Laboratory analysts and centralized testing facilities

Frequently Asked Questions
Q1: What is the GC-9760A used for?
It is designed for on-site dissolved gas analysis of transformer insulating oil to support transformer condition monitoring and fault assessment.
Q2: Which gases can the GC-9760A analyze?
The supplied list includes H₂, O₂, CH₄, C₂H₄, C₂H₆, C₂H₂, CO, and CO₂. Confirm the validated analytical configuration for each target gas with the manufacturer.
Q3: Can it perform analysis with one sample injection?
Yes. The supplied description states that its three-detector workflow supports analysis of the listed gas components from a single injection.
Q4: What are the advantages of its portable design?
Its compact modular construction and weight of less than 15 kg make it easier to transport to substations, transformer service locations, and other field-testing sites.
Q5: How are gas pressure and temperature monitored?
Gas-path pressures are digitally displayed through pressure sensors. Relevant temperatures, including those for the column oven, detectors, and conversion furnace, can be viewed and controlled through the workstation.
Q6: What is the purpose of digital FID zero adjustment?
It uses electronic baseline compensation to adjust the FID output signal, helping reduce interference associated with mechanical adjustment components and their wiring.
Q7: Does the GC-9760A include an explosion-proof FID detector?
The supplied specifications describe an enclosed explosion-proof FID detector housing. Users should confirm the applicable explosion-proof certification, hazardous-area classification, and installation requirements before use in hazardous locations.
Q8: What is the instrument's size and weight?
The stated dimensions are 450 × 430 × 230 mm, and the weight is less than 15 kg.
Q9: Is the GC-9760A a replacement for all laboratory DGA systems?
It is designed to support on-site transformer oil analysis. Whether it can replace a particular laboratory workflow depends on the required gases, validated methods, quality-control requirements, and applicable standards.

Frequently Asked Questions
Q1: What is the GC-9760A used for?
It is designed for on-site dissolved gas analysis of transformer insulating oil to support transformer condition monitoring and fault assessment.
Q2: Which gases can the GC-9760A analyze?
The supplied list includes H₂, O₂, CH₄, C₂H₄, C₂H₆, C₂H₂, CO, and CO₂. Confirm the validated analytical configuration for each target gas with the manufacturer.
Q3: Can it perform analysis with one sample injection?
Yes. The supplied description states that its three-detector workflow supports analysis of the listed gas components from a single injection.
Q4: What are the advantages of its portable design?
Its compact modular construction and weight of less than 15 kg make it easier to transport to substations, transformer service locations, and other field-testing sites.
Q5: How are gas pressure and temperature monitored?
Gas-path pressures are digitally displayed through pressure sensors. Relevant temperatures, including those for the column oven, detectors, and conversion furnace, can be viewed and controlled through the workstation.
Q6: What is the purpose of digital FID zero adjustment?
It uses electronic baseline compensation to adjust the FID output signal, helping reduce interference associated with mechanical adjustment components and their wiring.
Q7: Does the GC-9760A include an explosion-proof FID detector?
The supplied specifications describe an enclosed explosion-proof FID detector housing. Users should confirm the applicable explosion-proof certification, hazardous-area classification, and installation requirements before use in hazardous locations.
Q8: What is the instrument's size and weight?
The stated dimensions are 450 × 430 × 230 mm, and the weight is less than 15 kg.
Q9: Is the GC-9760A a replacement for all laboratory DGA systems?
It is designed to support on-site transformer oil analysis. Whether it can replace a particular laboratory workflow depends on the required gases, validated methods, quality-control requirements, and applicable standards.