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Advanced technology. Semiconductor laser technology and photo-acoustic spectroscopy are innovatively used for measuring dissolved gas in transformer oil. PASL-3000 has strong anti-cross interference ability, fast measuring response, high measuring accuracy, good repeatability etc. features.
All-components dissolved gas measurement and analysis. Adopt photo-acoustic spectroscopy to measure gas component contents of Hydrogen(H2), Carbon Monoxide(CO), Carbon Dioxide(CO2), Methane(CH4), Acetylene(C2H2), Ethane(C2H6), Ethylene(C2H4), moisture(H2O) etc. 8 types gases, also can be extended to measure component contents of Nitrogen(N2) and Oxygen(O2).
No consumables and no maintenance. There is no need for personnel to operate the equipment. No carrier gas or recalibration is required during operation. The constant maintenance is not needed.
Reliable degassing. The monitor has a built-in constant temperature vacuum degassing device, which can degassing efficiently and quickly, and no pollution to oil samples.
Easy installation. Installation can be completed without power failure to reduce the economic loss of customers.
Remote terminal display. The monitor supports MODBUS and IEC61850 protocol, which can provide remote terminal display, including equipment operation status, real-time measurement data, data column analysis graph, trend graph, report and warning prompt.
Multiple data communication, remote centralized management. Advanced remote centralized management software can summarize and monitor the running status and test data of multiple monitors, and provide perfect trend analysis and diagnosis results. It supports RS485, Ethernet, GPRS, Optical Fiber etc. communication modes.
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Power Supply |
AC220V/2kW or customized power supply |
Fault Gas Type |
Minimum measuring limit |
Maximum measuring limit
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Humidity |
10∼95% RH non-condensing |
H2 |
2 ppm |
5,000 ppm |
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Temperature |
environment temperature: -40ºC∼55ºC(-10ºC∼55ºC when starting) |
CO2 |
10 ppm |
50,000 ppm |
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oil temperature:: 10ºC∼100ºC |
CO |
2 ppm |
50,000 ppm |
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Enclosure |
IP55 |
CH4 |
0.5 ppm |
50,000 ppm |
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Dimension |
850(W)x800(D)x1700(H)mm |
C2H2 |
0.1 ppm |
50,000 ppm |
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Weight |
<350kg |
C2H4 |
0.5 ppm |
50,000 ppm |
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Measuring Accuracy |
Minimum measuring limit or ±30% (whichever is greater) |
C2H6 |
0.5 ppm |
2,000 ppm |
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H2O |
0∼100%(RS) or given in ppm |
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Photoacoustic spectroscopy gas detection technology is a gas detection technology based on the photoacoustic effect, which is generated by gas molecules absorbing specific wavelengths of electromagnetic radiation (such as infrared light). If a gas is placed in a closed container, the temperature rise after the gas absorbs radiation will cause the gas pressure to increase. At this time, if pulse light is used to irradiate the gas, a sensitive microphone can detect pressure fluctuations with the same frequency as pulse light.
To apply the photoacoustic effect to practical detection, it is first necessary to determine the specific infrared absorption spectrum of each gas; The second step is to determine the proportional relationship between the intensity of pressure waves generated by gas absorption energy and gas concentration. Therefore, by selecting an appropriate wavelength and combining it with the detection of pressure wave intensity, not only can the presence of a certain gas be verified, but its concentration can also be determined. Even qualitative and quantitative analysis can be performed on certain mixtures or compounds, which is the advantage of applying photoacoustic spectroscopy (PAS) technology.
Comparison of photoacoustic spectroscopy techniques with different light sources
HAOMAI ELECTRIC POWER AUTOMATION is established in 1999 and located in Wuhan of China, which is specialized in developing and manufacturing electrical power test and measurement instruments. HAOMAI products are widely used in power grid, petrochemical, metallurgy, railway, coal mine, research institutes and all kinds of large-scale factories or enterprises.mainly focuses on the sales and services of Protection Relay Test System, CT/PT Analyzer, Battery Load Tester, Transformer Testing Equipment, Circuit Breaker Analyzer, Partial Discharge Detector etc. electrical power test and measurement instruments.
HAOMAI follows total quality criteria, and always maintains standardized process and procedures for continuous growth. HAOMAI has been certified by ISO 9001:2015, ISO 14001:2015 and OHSAS 18001:2007.
HAOMAI builds own RELAYSTAR laboratory and performance test laboratory, and possesses professional production equipment and testing instruments in factory, such as Agilent 34401A 6 1/2 High-precision Meter, Multi-meter, EMH Standard Meter, CLOU Standard Power Source, Oscilloscope, Phase Meter, Insulation Test System, High Voltage Dividers, AC High Voltage Generator, Time Calibration Tester, Standard Micro-resistance etc.
HAOMAI is China well-known mark recognized and approved by State Administration for Industry & Commerce of People's Republic of China, and enjoys high reputation in domestic and foreign markets.
HAOMAI now is the key supplier for SGCC(State Grid Corporation of China) and CSG(China Southern Power Grid). Till 2018 HAOMAI products have been sold to 34 different countries.
HAOMAI always sticks to the faith of "cooperation and sharing", takes the "technology and market" as the direction, "creation and innovation" as the soul, listens to clients carefully, and improves the technology, upgrades the products, optimizes the service and tries all to be the global leader in electrical power test and measurement instruments field.
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