Portable Multi-Gas Monitor
The GM2400 Portable Multi-Gas Monitor is a specialized device designed to detect and analyze the concentration of specific gas components in the air and evaluate overall odor intensity. Its core value lies in converting "odor"—a subjective sensory pollution—into objective, quantifiable data, thereby supporting the traceability, control, and compliance assessment of gas pollution.
Technical Principle
Based on PID (Photoionization Detector), MOS (Metal Oxide Semiconductor), and EC (Electrochemical) technologies, the device builds a broad-spectrum sensor array. It obtains relatively unique multi-dimensional spectra of detected gases from different dimensions, enabling accurate measurement and solving the problem of sensor cross-interference.
- 1. Sensing Technology: Combined multi-type sensors (MOS/EC/PID) with optimized array layout (microfluidic channel design, temperature gradient control) and adaptive dynamic array development.
- 2. Signal Processing: Multi-modal signal acquisition, tiny signal digitization, synchronous collection of environmental parameters (temperature/humidity/pressure), intelligent preprocessing algorithms, wavelet transform denoising technology, baseline drift correction algorithms, and dynamic compensation models.
- 3. Pattern Recognition: Time-frequency domain feature extraction, nonlinear feature mining (chaos analysis, fractal dimension), and deep learning-based automatic feature extraction (feature spectrum)
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Product Performance
- 1. Obtains relatively unique multi-dimensional spectra from different dimensions to achieve accurate gas measurement and eliminate sensor cross-interference.
- 2. Sensor array measurement enables mutual calibration, solving the problems of frequent calibration and single-sensor poisoning.
- 3. The sensor module supports the measurement of over 100 types of gases; customized gas libraries are available for users, addressing the high system complexity caused by multiple gas parameters.
- 4. Combination of photoionization and metal oxide technologies reduces the response time to 16 seconds.
Product Features
- 1. Simultaneously detects and outputs 10 parameters: OU (Odor Unit), TVOC, Ammonia (NH₃), Hydrogen Sulfide (H₂S), Styrene (C₈H₈), Trimethylamine (C₃H₉N), Methanethiol (CH₃SH), Dimethyl Sulfide (C₂H₆S), Dimethyl Disulfide (C₂H₆S₂), and Carbon Disulfide (CS₂).
- 2. Broad-spectrum sensor array with 11 built-in sensors.
- 3. Real-time concentration curves, over-range alarm function, and odor traceability spectrum.
- 4. Independent gas chamber with PTFE (Polytetrafluoroethylene) coating to prevent gas adsorption.
- 5. Multiple working modes with independent algorithm optimization for different on-site scenarios.
- 6. Fixed antenna and on-board eSIM communication card (industrial-grade chip soldered on board) for stable connectivity.
Product Parameters
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Category |
Parameter |
Details |
|
Sampling |
Sampling Method |
Pump Suction |
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Sampling Flow Rate |
0.5~1.0 L/Min |
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|
Flow Control |
PWM Control |
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Gas Detection |
TVOC |
Range: 0~20 ppm; Accuracy: ±1.5% F.S |
|
Ammonia (NH₃) |
Range: 0~10 ppm; Accuracy: ±1.5% F.S |
|
|
Hydrogen Sulfide (H₂S) |
Range: 0~10 ppm; Accuracy: ±1.5% F.S |
|
|
Carbon Disulfide (CS₂) |
Range: 0~10 ppm; Accuracy: ±1.5% F.S |
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|
Styrene (C₈H₈) |
Range: 0~10 ppm; Accuracy: ±1.5% F.S |
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Methanethiol (CH₃SH) |
Range: 0~10 ppm; Accuracy: ±1.5% F.S |
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|
Dimethyl Sulfide (C₂H₆S) |
Range: 0~10 ppm; Accuracy: ±1.5% F.S |
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Trimethylamine (C₃H₉N) |
Range: 0~10 ppm; Accuracy: ±1.5% F.S |
|
|
Dimethyl Disulfide (C₂H₆S₂) |
Range: 0~10 ppm; Accuracy: ±1.5% F.S |
|
|
Odor Parameter |
OU (Odor Unit) |
Range: 0~2000 |
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System |
Data Storage |
≥5 million data points; Continuous storage time >6 years |
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Data Export |
Supports USB and remote data export |
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Battery Material |
Lithium-ion |
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Battery Capacity |
12.6V, 5000 mAh |
Application Scenario
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Industry is one of the main sources of odor pollution, covering chemical, food, coating, and other sectors. The monitor is mainly used to control odor gases in production, storage, and emission links, avoiding over-limit penalties or complaints from surrounding residents. -
For urban sewage treatment plants and industrial park sewage treatment stations, it monitors hydrogen sulfide, ammonia, and volatile organic acids (e.g., acetic acid) produced by anaerobic decomposition of sewage. It real-time tracks odor concentration during treatment and triggers the spray deodorization system when over-limit, reducing impacts on the surrounding environment. -
It detects ammonia, hydrogen sulfide, trimethylamine, and indole (main components of fecal odor) generated by the decomposition of livestock and poultry manure. It prevents odor diffusion to the surrounding environment, assists in adjusting manure cleaning frequency (e.g., timely removal) and biogas digester sealing processes, and avoids non-point source pollution.
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Targeting odor emergencies such as chemical plant storage tank leaks, dangerous goods transport vehicle rollovers (e.g., ammonia water, sulfide leaks), and sewage treatment plant pipeline ruptures. It quickly monitors the odor concentration and diffusion range in the leak area, guides emergency departments to delineate the "evacuation radius," and assesses pollution levels (e.g., whether to activate graded response).