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Product details
Product Overview
Picarro's G4301 analyzer is a new generation of lightweight, portable, battery powered greenhouse gas analyzer based on cavity ring down spectroscopy (CRDS) technology, designed specifically for mobile measurements required for scientific research. This is a perfect solution tailored for mobile measurement in the most challenging and remote environments. G4301 can synchronously and continuously measure the concentrations of CO2, CH4, and H2O over a wide dynamic range, making reliable background and emission measurements possible. This makes it an ideal tool for precise detection of natural gas leaks and quantitative analysis of greenhouse gases, especially in remote areas with complex terrain. G4301 is also an excellent instrument for measuring soil flux. The sampling system comes with a built-in pump, which can be used not only for continuous field exploration operations, but also for closed-loop soil gas chamber research, so it has a wide range of applications in the field.
Product Features
• High precision measurement of CO2 and CH4 concentrations at ppb level
• Easy to carry, lightweight, and low power consumption
Equipped with a rechargeable lithium battery, it supports up to 8 hours of continuous operation and seamlessly switches between batteries for uninterrupted measurement
The built-in WiFi module allows remote operation using a tablet or smartphone
Optional accessories include a mobile soil flux system and GPS
Main technical parameters
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System specifications |
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Operating temperature |
10 ℃ to 45 ℃ |
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ambient humidity |
<99% (under non condensing conditions) |
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External dimensions |
14 inches wide x 6.95 inches thick x 18.2 inches long (35.6 x 17.7 x 46.4 centimeters) |
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Sample flow rate |
Built in vacuum pump, approximately 1 standard liter per minute (slm) at atmospheric pressure |
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weight |
23 pounds (10.4 kilograms) |
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power waste |
25 watts |
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Battery |
Built in lithium-ion battery, 223Wh/60300mAh, input/output 12-19V, charging time of 5-8 hours |
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Sample inlet and outlet connection |
Colder valve free quick connector |
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data output |
USB (x2), Wi Fi connection |
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operating system |
Windows 7 Professional Edition |
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Performance specifications |
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performance index |
CO2 |
CH4 |
H2O |
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Initial accuracy (5 seconds) |
0.4ppm |
3ppb |
100ppm+5% |
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Accuracy (300 seconds, 1 σ) |
0.04ppm |
0.3ppb |
10ppm+5% |
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Detection limit (300 seconds, 3 σ) |
0.12ppm |
0.9ppb |
- |
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Drift (24-hour, peak to peak, 50 minute mean interval) |
0.5ppm |
1ppb |
- |
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measuring range |
0-3% |
0-800ppm |
0-3% (under non condensing conditions) |
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Measurement interval |
3 seconds |
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Response time (decrease/increase) |
5 seconds |
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Use case
Case 1
Independent evaluation of Picarro G4301 by ICOS Atmospheric Specialized Center Metrology Laboratory in the Antarctic region. The evaluation includes continuous measurement repeatability (CMR), short-term stability and drift, short-term repeatability (STR), long-term repeatability (LTR), atmospheric pressure sensitivity, temperature sensitivity, etc. It was found that the evaluation results of various parameters of G4301 were good.
Case 2
Users use the Picarro backpack gas analyzer G4301 to measure greenhouse gases along coastlines, seagrass meadows, and Bonaire mangroves. The advantages of G4301 can be immediately demonstrated in mobile experiments: researchers obtained greenhouse gas data from over 200 wetlands in the surrounding area within 48 hours.
Case 3
Jesper Riis Christiansen and Christian Juncher J ø rgensen from the University of Copenhagen reported on the first use of Picarro's new gas analyzer G4301 in the Arctic Circle. The purpose of this study is to determine the magnitude and range of methane absorption in the soil from the atmosphere. The soil in the study area covers dry and well drained permafrost landforms that have never been explored in the Arctic ice free region and the high-altitude extreme cold region of Greenland. This high-precision gas analysis instrument measures methane concentration flux in a closed chamber for 4 minutes, enabling it to measure reliable methane concentration flux in the secondary environment. The light weight, high efficiency, and low energy consumption of this instrument enable Jesper and Christian to travel to difficult to reach areas such as the edge of glacial moraines, mountaintops, glacial sedimentary plains, and other characteristic glaciers on the Greenland ice sheet for high-precision real-time measurement of some important greenhouse gases. Under harsh extreme cold conditions, the portability and ease of operation of this instrument contribute to the study of spatiotemporal changes in methane and carbon dioxide sources and sinks (emissions and deposition).
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