HZGC-9760A Portable DGA Analyzer For Transformer Oil

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In order to meet the needs of power system analysts who need to carry instruments to the fault site far away from the laboratory for transformer oil analysis, our company has newly designed the HZGC-9760A portable DGA for transformer oil, which integrates the computer, gas source and other components. At the same time, the number of pieces of the whole system is compressed to 2 pieces, which makes it truly portable.

The instrument adopts the classic three-detector process, and can complete the full analysis of the contents of 7 gas components such as H2, CO, CO2, CH4, C2H4, C2H6. C2H2 dissolved in insulating oil in one injection. can be detected. 2. The content of N2.

HZGC-9760A portable DGA for transformer oil is suitable for both on-site analysis and laboratory analysis. With the further improvement of the overall technology and design, it has become a substitute for laboratory chromatography, and has been successfully applied to power supply companies, power generation Factory, transformer factory, large smelting enterprise, railway power supply section and many other industries and departments.

Detection limit (unit: L/L):

component	detection limit	component	detection limit
H2	2	ch4	0.05
CO	2	C2H4	0.05
C02	2	C2H6	0.05
02	5	C2H2	0.05
n2	5	一	一一

Detector technical indicators:

Thermal Conductivity Detector (TCD)	Hydrogen flame ionization detector (FID)
Adopt semi-diffusion structure	Cylindrical collector structure, quartz nozzle, very
The power supply adopts constant current	Automatic ignition; stabilization time: ten minutes
Sensitivity: \10000mV. ml/mg (benzene)	Detectionlimit:W8x10~12g/s

Baseline noise: w20uV	Baseline noise: w2x1C) T3a
Baseline drift: wl00nV/30min	Baseline drift: ^2x10-12A/30min
Linear: &104	Linear: &106

Temperature indicator:

Temperature control part

Temperature control range

Temperature control accuracy

oven

800~400% at room temperature:

±0.1°C

Hydrogen flame (FID) detector

8°C~400°C at room temperature

±0.1°C

Thermal Conductivity (TCD) Detector

8°C~400°C at room temperature

±0.1°C

Ni catalytic converter

8°C~400°C at room temperature

±0.1°C

Other parameters:

Power Supply: 220V±22V, 50Hz Power: 600W Technical functions and Characteristics

1. Highly integrated integrated design:

The HZGC-9760A portable chromatograph for transformer oil adopts a new integrated design. Four gas sources, such as nitrogen, hydrogen, air and standard gas, as well as a computer and a chromatographic workstation are all built into the instrument. There is no need for an external gas source and computer. The box adopts the original imported storm trolley box, and the

anti-drop height is more than 1 meter.

2Three-detector process technology to achieve complete separation of all components:

HZGC-9760A portable chromatograph for transformer oil adopts three-detector process technology, equipped with one TCD detector and two FID detectors, which overcomes the influence of a large amount of CO and CC>2 on smoke gases, especially the influence on C2H2. The

detection time is shortened and the detection sensitivity is greatly improved.

The carrier gas adopts the back pressure control technology, which greatly reduces the influence of the injection peak on the hydrogen analysis:

Due to the short peak time of hydrogen, it is easy to be interfered by the injection peak. The HZGC-9760A portable chromatograph for transformer oil adopts the back pressure valve control technology, which can effectively reduce the interference of the injection peak to the hydrogen peak and reduce artificial The influence of factors on hydrogen detection greatly improves the accuracy of hydrogen detection.

Adopt the chromatographic column technology of mixed filler, greatly improve the chromatographic peak response, and prolong the service life of the chromatographic column:

HZGC-9760A portable chromatograph for transformer oil adopts chromatographic column and ERIC tube equipped with new mixed packing, which avoids the generation of sample adsorption to the greatest extent, and improves the response of smoke gas by about 20 times. The value can reach about 15mv, and the detection limit of Yihuan can reach 0.05ppm.

Adopt high-sensitivity thermal conductivity detector to greatly improve the detection sensitivity of hydrogen:

Different from the traditional thermal conductivity detector, the HZGC-9760A portable chromatograph for transformer oil is equipped with a high-sensitivity thermal conductivity detector with rhenium tungsten wire resistance up to 130 Q. It has the characteristics of small cell size and fast response. Detection limit up to 2ppm

Using computer anti-control technology to realize digital operation and one-key start of the instrument:

The analysis parameters of the HZGC-9760A portable chromatograph for transformer oil, including the setting or display of carrier gas pressure, sample pressure, temperature, etc., are all set or displayed through the workstation. The operation is simple and the analysis conditions can be grasped in real time. The heating and cooling operations of the instrument can be realized by clicking the mouse on the workstation, completely abandoning the previous tedious operations in laboratory chromatography, and basically realizing one-key start-up.

Digital electronic zero adjustment technology to enhance the anti-interference ability of the instrument:

The detector signal zero adjustment of HZGC-9760A special portable chromatograph for transformer oil adopts electronic zero adjustment technology, and uses high-precision digital circuit for base current compensation to realize electronic adjustment of output signal level and reduce parasitic parameters, so it has strong anti-interference ability.

Using computer anti-control technology to realize the control of the oscillator

Through a connecting signal line, the HZGC-9760A portable chromatograph for transformer oil can provide power for the small oscillator, and can operate the whole process of the oscillator through the workstation, such as heating up, starting the oscillation, resting, and beeping at the end.

Automatic gas cut-off protection function to ensure the safe operation of the detector

The HZGC-9760A portable chromatograph for transformer oil has the function of gas cut-off protection. When the carrier gas flow is lower than the set threshold, the instrument will automatically shut off the thermal conductivity current to prevent the thermal conductivity detector from burning out and improve the safety of the instrument.

The instrument comes with an aging program, and the user can choose to automatically aging the instrument without complicated settings: