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Main features:
◆Intelligent temperature and humidity and zero point compensation algorithm, full software automatic calibration function for target points from level 2 to level 3 to ensure the accuracy of measurement results; automatically detect the working status of each sensor and components when starting up;
◆Support PPM and mg/m3, %VOL and mg/L concentration units can be switched freely;
◆Real-time data transmission, can accurately issue local and remote wireless alarm notifications in multiple alarm methods (optional);
◆Automatic layout according to the number of sensors; automatic storage, Manual storage, single-point storage, multiple storage methods are available; the storage interval can be customized, and it can store 300,000 sets of data with date and time marks. If a micro SD memory card is selected, it can store more than 10 million sets
; The distance wireless transmission method or the GPRS wireless transmission method with unlimited distance anywhere can transmit real-time detection data and alarm status to the safety center through the built-in wireless module function (optional);
◆ Support USB and RS232 serial port measurement data download ;Support miniature portable printer serial port printing.
Application fields:
1. It is used for environmental protection monitoring such as air and pollution source emissions;
2. It is used for industrial process control of petroleum, chemical industry, power station, etc., and it is specially used for gas analysis and detection of mud logging equipment;
3. Used in fields such as agriculture, medical care and health and scientific research experiments;
4. Determination of gas content in various combustion tests of garbage incineration and landfill;
5. Air monitoring for public places;
measurement principle introduction :
◆Infrared gas detection principle
Non-dispersive infrared spectroscopic gas concentration detection technology
Non-dispersive infrared (NDIR) sensors are mostly used in the field of gas analysis as a means of spectral detection. It is mainly composed of infrared light source, gas chamber, wavelength filter and infrared detector. The gas is introduced into the gas chamber by pumping, and the gas concentration is detected by the electro-optic modulation relationship according to the corresponding absorption characteristics of the gas on the infrared spectrum of a specific wavelength.
Since all measured gases absorb infrared radiation in a different spectral range, also known as the "fingerprint", selectivity is guaranteed and cross-interference is reduced. The signal processing fully takes into account the influence of temperature and drift, and an easy-to-use concentration signal is obtained through compensation calculation.
Product parameters:
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product name |
Desktop Methane Gas Analyzer |
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Gas detection |
Methane (CH4) |
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Detection principle |
Non-dispersive infrared (NDIR) |
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Measuring range |
Non-spectral infrared ( NDIR ) measurement range: 0-5%VOL, 10%VOL, 20%VOL, 30%VOL, 50%VOL, 100%VOL optional; |
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resolution |
0.1%Vol (0～100%Vol) |
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installation method |
①Desktop, rack-mounted; ②Wall-mounted installation with mounting bracket |
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Indication error |
≤±3% FS (higher accuracy requirements based on sensor performance) |
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repeatability |
≤±1% |
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zero drift |
≤±1% (FS/year) |
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Response time |
≤25 seconds (T90), (higher requirements based on sensor performance) |
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Recovery Time |
≤30 seconds (higher requirements based on sensor performance) |
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Preheat time |
More than 120 seconds (according to different sensor configurations) |
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Power supply |
220VAC +10%, -15%; 50Hz ±5Hz |
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fuse |
Rated current: 10A Size: 5mm*20mm |
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Intake flow |
(0.5-0.8) L/min (flow fluctuation ≤ 0.02L/min) |
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Environmental pressure |
86kPa～106kPa |
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ambient temperature |
-20°C～+55°C (typical value) -40°C～+70°C (limit value) |
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environment humidity |
10%～95%RH (no condensation) |
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The main material |
SPCC+ aluminum profile |
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output signal |
① Three-wire 4-20mA current signal output, which can be connected to various alarm controllers, PLC, DCS and other control systems |
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Signal transmission method |
①Three-core (four-core) shielded cable transmission: the farthest transmission distance is 1000 meters to 2000 meters (single core 1 square shielded cable) |
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Alarm method |
External sound and light alarm can be installed, alarm sound: < 90 decibels |
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Alarm point setting |
A1 alarm value, A2 alarm value; TWA alarm value, STEL alarm value can be set separately |
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display screen |
5-inch TFT touch TFT-LCD color LCD screen, 800x480 dot matrix LCD |
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Operation method |
5-inch LCD touch screen touch operation + button auxiliary operation |
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button |
Main interface+lock screen+reset` |
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backlight |
Manual, automatic when alarm |
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direct reading |
Measured value, ambient temperature and humidity, date and time, maximum value, minimum value |
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data record |
Automatic, manual, single-point storage, 1-6 sensor storage intervals can be customized, can continuously store 300,000 sets of data with date and time, optional micro SD memory card, can store more than 10 million sets of data |
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data download |
Support USB and RS232 serial port measurement data download |
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data printing |
Support miniature portable printer serial port printing (optional) |
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calibration |
2-level to 3-level target point full software calibration function, calibration calibration value can be set, one-key zero adjustment |
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Calibration standard gas requirements |
Zero-point standard gas: 99.999% N2 (nitrogen); |
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Explosion-proof grade |
Ex ia ⅡC T4 Ga (intrinsically safe) |
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degree of protection |
IP42 |
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operating mode |
Two operating modes, user mode and administrator mode, are available |
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size |
Standard 19-inch chassis, width 480mm × depth 310mm × height 130mm |
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weight |
About 7Kg |
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Executive standard |
GB15322.1-2003, GB3836.1-2010, GB3836.2-2010, GB3836.4-2010 |
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quality assurance |
One year warranty period, free maintenance during the warranty period. |