Greenhouse Gas Monitoring Instrument
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| Brand | HUANKONG |
|---|---|
| Model | GHK-5000A |
| Detection Principle | Non-Dispersive Infrared (NDIR) |
| Detectable Gases | CO₂, CO, CH₄, N₂O |
| Sampling Flow Rate | 2.0 L/min |
| Data Storage Capacity | ≥5000 records |
| Battery Life | >4 hours per charge |
| Display | Color touchscreen |
| Communication Interfaces | USB, RS232, Bluetooth (optional) |
| Alarm | Visual & audible, user-configurable thresholds |
| Units | ppm / mg/m³ (switchable) |
| Temperature & Humidity Compensation | Built-in algorithm |
| Pump | Imported high-load diaphragm pump |
| Brand | HUANKONG |
|---|---|
| Model | GHK-5010 |
| Detection Principle | Non-Dispersive Infrared (NDIR) |
| Measurable Gases | CO₂, CO, CH₄, N₂O, O₂ (configurable) |
| Operating Power | AC/DC dual-mode with rechargeable Li-ion battery |
| Data Storage Capacity | >100,000 records |
| Display | High-brightness color touchscreen |
| Sample Interface | Heated titanium alloy probe with detachable front section |
| Humidity Compensation | Built-in algorithm with optional humidity sensor |
| Environmental Compliance | Designed for EPA Method 3A, ISO 14064-1 support, and EU EN 15267-3 field verification contexts |
| Connectivity | USB data export, Bluetooth printer interface |
| Units | ppm, mg/m³, % (user-selectable) |
| Preheat Time | <90 s (typical for NDIR gas cells) |
| Cross-Interference | Optimized optical filtering to minimize spectral overlap between CO₂/CH₄/N₂O bands |
| Brand | HUANKONG |
|---|---|
| Model | GHK-510 |
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Detection Principle | Tunable Diode Laser Absorption Spectroscopy (TDLAS) |
| Target Gases | CH₄, CO₂, H₂O |
| Compliance | Designed for environmental monitoring applications in accordance with ISO 14064-1 and EPA Method TO-15 guidance principles |
| Software Interface | RS485/Modbus RTU, Ethernet TCP/IP, optional analog 4–20 mA outputs |
| Brand | HUANKONG |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | OEM Manufacturer |
| Country of Origin | China |
| Model | GHK-5100 |
| Price Range | USD 7,000 – 28,000 (FOB) |
| Measurement Principle | Tunable Diode Laser Absorption Spectroscopy (TDLAS) |
| Target Gases | CH₄ (0–100 ppm), CO₂ (0–2000 ppm), H₂O (optional) |
| Detection Limits | CH₄: 0.01 ppm |
| CO₂ | 0.1 ppm |
| Response Time | <3 s |
| Repeatability | ≤±3% FS |
| Accuracy | ±3% of reading |
| Operating Temperature Stability | Active thermal control of laser and absorption cell |
| Pressure Regulation | Integrated pressure stabilization algorithm |
| Sample Flow Control | Built-in diaphragm pump with closed-loop flow regulation |
| Compliance | Designed for field-deployable environmental monitoring per ISO 14064-1, EPA Method TO-15 (adapted), and EU Directive 2009/125/EC energy efficiency guidelines |
| Brand | HUANKONG |
|---|---|
| Model | GHK-580 |
| Detection Gases | CO₂, CH₄, CO, N₂O, H₂O |
| Technology | Cavity Ring-Down Spectroscopy (CRDS) |
| Effective Optical Path Length | Up to 60 km |
| Measurement Mode | Continuous, Real-Time, Unattended Operation |
| Compliance | Designed for ISO 14064-1 support and EPA Method TO-15 / ASTM D6348 context |
| Operating Environment | Ambient air monitoring, laboratory-grade stability |
| Temperature & Pressure Control | Active stabilization with ±0.01 °C and ±0.01 kPa precision |
| Brand | HUANKONG |
|---|---|
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | KHK 650A |
| Detection Gases & Ranges | PAMS compounds, VOCs, SF₆, odorants, sulfur-containing compounds (e.g., H₂S, COS, CS₂, mercaptans) |
| Response Time | 30 min – 1 h |
| Analytical Principle | Capillary Gas Chromatography (GC) with configurable detectors (FID, ECD, PID, or GC-MS interface) |
| Compliance Standards | EPA Method TO-14A, TO-15, TO-17, PAMS protocol |
| Automation Level | Fully automated, unattended operation |
| Sample Contact Materials | Silcosteel®-passivated stainless steel tubing and components |
| Integration Capability | Compatible with third-party GC systems (Agilent, Thermo Fisher, Shimadzu) |
| Brand | HUANKONG |
|---|---|
| Model | PA-500 |
| Origin | Shandong, China |
| Manufacturer Type | Direct Manufacturer |
| Detection Principle | Non-Dispersive Infrared (NDIR) |
| Measurable Gases | CO₂ (primary), expandable to PM₁₀, PM₂.₅, SO₂, NO, CO, O₃, VOCs, BTEX |
| Environmental Application Domain | Ambient Air Quality Monitoring, Industrial Boundary Monitoring, GHG Emission Verification |
| Compliance Context | Designed for alignment with ISO 14064-3 verification support, EPA Method TO-15 / Method 25A compatibility (via optional modules), and EU Directive 2008/50/EC ambient air reference equivalency |
| Brand | Leshi |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic |
| Model | 9100 ODS |
| Price Range | USD 365,000 – 408,000 |
| Measurement Principle | Fourier Transform Infrared Spectroscopy (FTIR) |
| Application Domain | Environmental Compliance & Industrial Emissions Monitoring |
| Detection Principle | FTIR Absorption Spectroscopy |
| Accuracy | ≤ ±2% of Full Scale |
| Target Gases | 30 Primary ODS Compounds (e.g., CFC-11, CFC-12, HCFC-22, HCFC-141b, Halon-1211, Halon-1301, CCl₄, CH₃Br, etc.) |
| Response Time | ≤ 120 s |
| Repeatability | < 2% of Full Scale |
| Brand | Leshi |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | 9100-ODS |
| Price Range | USD 365,000 – 408,000 |
| Measurement Principle | Fourier Transform Infrared Spectroscopy (FTIR) |
| Application Domain | Environmental Compliance & Industrial Emissions Monitoring |
| Detection Principle | FTIR Absorption Spectroscopy |
| Accuracy | ≤ ±2% of Full Scale |
| Target Gases | 30 Primary ODS Compounds (e.g., CFC-11, CFC-12, HCFC-22, HCFC-141b, Halon-1211, Halon-1301, CCl₄, CH₃Br, C₂H₃Cl₃) |
| Response Time | ≤ 120 s |
| Repeatability | < 2% of Full Scale |
| Brand | Leshi |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Product Origin | Domestic (China) |
| Model | 9100FIR ODS |
| Technology Principle | Fourier Transform Infrared Spectroscopy (FTIR) |
| Detection Principle | DTGS Detector |
| Accuracy | ±2% |
| Target Gases | ≥51 regulated ODS compounds |
| Response Time | ≤90 s |
| Repeatability | 2% |
| Compliance Standard | HJ 1240–2021 |
| Brand | Leshi |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | 9100FIR-ODS |
| Technology Principle | Fourier Transform Infrared (FTIR) Spectroscopy |
| Target Gases | Ozone-Depleting Substances (ODS), Volatile Organic Compounds (VOCs) |
| Detector Type | High-Sensitivity DTGS Detector |
| Optical Resolution | ≤0.5 cm⁻¹ (typical) |
| Spectral Range | 4000–600 cm⁻¹ |
| Response Time | < 30 s (T₉₀, system-dependent) |
| Repeatability | ±1.5% RSD (at ≥10× detection limit) |
| Compliance Framework | Supports EPA Method TO-14A/TO-15, ISO 13867, EN 14662 |
| Brand | Leshi |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | 9100FIR-air |
| Price | USD 165,000 (FOB Beijing) |
| Measurement Principle | Fourier Transform Infrared (FTIR) Spectroscopy |
| Application Domain | Environmental Monitoring & Industrial Emissions Compliance |
| Accuracy | ±2% of reading |
| Repeatability | ±2% of full scale |
| Brand | LESHI |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Product Category | Domestic |
| Model | 9100FIRair |
| Price | ¥1,180,000 CNY |
| Measurement Principle | Fourier Transform Infrared Spectroscopy (FTIR) |
| Detection Principle | Deuterated Triglycine Sulfate (DTGS) Detector |
| Accuracy | ±2% of reading |
| Target Gases | ≥51 quantified species (including CO₂, CH₄, N₂O, CO, SF₆, CFCs, VOCs, and inorganic acids) |
| Response Time | ≤90 s |
| Repeatability | ±2% RSD |
| Spectral Resolution Options | 1 cm⁻¹ or 4 cm⁻¹ |
| Detector Type | Ambient-Temperature DTGS |
| Reference Laser | VCSEL (Vertical-Cavity Surface-Emitting Laser), 10-year operational lifetime |
| Sample Handling | In-situ, hot/wet, non-destructive, multi-component simultaneous analysis |
| Compliance Standards | HJ 919–2017, HJ 920–2017, HJ 1011–2018 |
| Brand | Leshi |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | 9100FIRair-G |
| Technology Principle | Fourier Transform Infrared (FTIR) Spectroscopy |
| Detection Principle | Mid-Infrared Absorption Spectroscopy |
| Accuracy | ≤ ±2% FS |
| Repeatability | ≤ 2% RSD |
| Measured Gases | N₂O, CH₄, CO₂, SF₆, NF₃, CFCs (Chlorofluorocarbons), PFCs (Perfluorocarbons) |
| Simultaneous Quantification Capacity | Up to 50 compounds |
| Spectral Range | 485–8500 cm⁻¹ |
| Spectral Resolution | 1 cm⁻¹ (standard), optional higher/lower resolutions available |
| Sample Cell Volume | 300 mL |
| Detector | DTGS (Deuterated Triglycine Sulfate), room-temperature operation, >10-year lifetime |
| Reference Source | Solid-State VSECL Laser, >10-year lifetime |
| Quantitative Spectral Library | ≥400 compounds (freely accessible and user-expandable) |
| Qualitative Spectral Library | 5874 compounds |
| Software Features | Auto-ranging mode, user-defined calibration file creation, spectral library import/export, GLP-compliant data logging |
| Brand | Leshi |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | 9100QCLAS |
| Detection Gases & Ranges | CO₂ (0–10,000 ppm), CH₄ (0–100 ppm), N₂O (0–10 ppm), H₂O (0–30,000 ppm) |
| Detection Limits | CO₂ ≤ 0.1 ppm, CH₄ ≤ 2 ppb, N₂O ≤ 0.1 ppb |
| Measurement Principle | Tunable Quantum Cascade Laser Absorption Spectroscopy (QCLAS) with Fabry–Pérot Interferometer Reference and Dual-Path Calibration |
| Power Supply | Internal Rechargeable Li-ion Battery (≥8 h continuous operation) or 12–24 V DC |
| Display | 7-inch HD capacitive touchscreen with real-time spectral visualization |
| Data Output | USB, RS-232, Ethernet, optional 4G/LTE module |
| Compliance | Designed to support ISO 14064-2, EPA Method TO-15/TO-11A alignment, and GLP-compliant data logging per FDA 21 CFR Part 11 audit trail requirements |
| Brand | LI-COR |
|---|---|
| Origin | Germany |
| Manufacturer Type | Original Equipment Manufacturer (OEM) |
| Import Status | Imported |
| Model | LI-7815 |
| Detection Principle | Optical Feedback–Cavity Enhanced Absorption Spectroscopy (OF-CEAS) |
| CO₂ Range | 0–10,000 μmol/mol |
| H₂O Range | 0–60,000 μmol/mol |
| CO₂ Precision | 0.04 μmol/mol (1σ, 5-s average @ 400 μmol/mol) |
| Max Drift | < 0.2 μmol/mol per 24 h |
| CO₂ Response Time (T₁₀–T₉₀) | ≤2 s (0 → 400 μmol/mol) |
| H₂O Precision | 20 μmol/mol (1σ, 5-s average @ 10,000 μmol/mol) |
| Measurement Frequency | 1 Hz |
| Optical Cavity Volume | 6.41 cm³ |
| Sample Flow Rate | 250 sccm (standard), 70 sccm with low-flow accessory |
| Operating Temperature | −25 °C to +45 °C (non-direct-sunlight conditions) |
| Operating Humidity | 0–85% RH (non-condensing, non-direct-sunlight) |
| Sample Line Humidity | 0–99.9% RH (non-condensing) |
| Pressure Range | 70–110 kPa (extended mode: 50–110 kPa) |
| Power Consumption | 22 W (steady-state @ 25 °C) |
| Weight | 10.5 kg (including internal batteries) |
| Dimensions (L×H×W) | 51 × 33 × 18 cm |
| Connectivity | Ethernet and Wi-Fi (2.4 GHz, IEEE 802.11 a/b/g/n/ac) |
| Data Storage | Internal memory supports ≥3 months of 1-Hz data |
| Brand | LICA |
|---|---|
| Model | LI-G3001 |
| Measurement Targets | CH₄, CO₂, H₂O |
| Precision (1σ, 1 s / 10 s) | CH₄ < 2 ppb / < 1 ppb |
| Measurement Ranges | CH₄ 1–200 ppm |
| Operating Temperature | 0–45 °C |
| Operating Humidity | 0–95 %RH (non-condensing) |
| Data Acquisition Rate | ≥1 Hz (1/e response time) |
| Sample Flow Rate | 350 sccm |
| Power Consumption | < 30 W |
| Connectivity | Wi-Fi |
| Onboard Storage | 30 GB |
| Dimensions | 56 × 36 × 19 cm |
| Weight | 8 kg |
| Brand | Lingxi Optoelectronics |
|---|---|
| Origin | Zhejiang, China |
| Model | HGA-331 |
| Measurement Principle | Cavity Ring-Down Spectroscopy (CRDS) |
| Detection Gases | CO₂, CH₄, H₂O (simultaneous) |
| Sensitivity | < 1 ppb (for CO₂ and CH₄) |
| Compliance | WMO Global Atmosphere Watch (GAW) Performance Specifications |
| Temperature & Pressure Control | Integrated active thermal and barometric stabilization |
| Output | Dry-mole-fraction concentrations (H₂O-corrected) |
| Data Logging | Internal storage + Ethernet/RS-232/USB interfaces |
| Brand | Lingxi Optoelectronics |
|---|---|
| Origin | Zhejiang, China |
| Model | HGA-331p |
| Measurement Principle | Cavity Ring-Down Spectroscopy (CRDS) |
| Target Gases | CO₂, CH₄, H₂O |
| Detection Sensitivity | Sub-ppb level |
| Power Supply | Rechargeable Li-ion battery (8 h continuous operation) |
| Connectivity | Integrated Wi-Fi, USB 2.0, Ethernet |
| Operating Temperature | 10–35 °C |
| Dimensions | Compact portable form factor (< 4.5 kg) |
| Compliance | Designed for field-deployable environmental monitoring per ISO 14064-1 and EPA Method TO-15 adjunct principles |
| Brand | Lingxi Optoelectronics |
|---|---|
| Origin | Zhejiang, China |
| Model | HGA-341 |
| Measurement Principle | Cavity Ring-Down Spectroscopy (CRDS) |
| Detection Gases | CO₂, CO, CH₄, H₂O (simultaneous) |
| Sensitivity & Accuracy | Sub-ppb level |
| Compliance | WMO GAW Performance Specifications |
| Output | Dry-mole-fraction concentrations with H₂O dilution correction |
| Effective Optical Path Length | ~20 km in compact cavity |
| Brand | Lingxi Optoelectronics |
|---|---|
| Origin | Zhejiang, China |
| Model | HGA-351 |
| Measurement Principle | Cavity Ring-Down Spectroscopy (CRDS) |
| Target Gases | CO₂, CH₄, NH₃, N₂O, H₂O |
| Detection Sensitivity | <1 ppb (for CO₂, CH₄, N₂O) |
| Water Vapor Correction | Integrated proprietary algorithm for dilution correction and dry-mole-fraction output |
| Operating Environment | Temperature- and pressure-stabilized optical cavity |
| Compliance | Designed for GLP-compliant environmental monitoring |
| Dimensions | Compact cavity design enabling effective optical path length >20 km in <1 L volume |
| Brand | Lingxi Optoelectronics |
|---|---|
| Origin | Zhejiang, China |
| Model | HGA-431 |
| Detection Gases | N₂O, CO, H₂O |
| Measurement Range | 1–1500 ppb |
| Sensitivity | Sub-ppt (≤0.1 ppt) |
| Compliance | WMO Compatibility for Atmospheric Monitoring Stations |
| Water Vapor Correction | Integrated proprietary algorithm for dilution correction and dry-mole-fraction output |
| Technology | Mid-Infrared Cavity Ring-Down Spectroscopy (Mid-IR CRDS) |
| Environmental Rating | Industrial-grade enclosure for continuous unattended operation |
| Brand | LINGXI Optoelectronics |
|---|---|
| Model | LXEC-210 |
| Measurement Principle | Non-Dispersive Infrared (NDIR) Spectroscopy |
| Target Gases | CO₂, H₂O |
| Origin | Zhejiang, China |
| Gas Detection Configuration | Open-path, in-situ |
| Power Consumption | Low-power design, no pump required |
| Compliance Context | Designed for field-deployable eddy covariance (EC) flux measurements per AmeriFlux/ICOS protocols |
| Sample Interface | Direct atmospheric sampling, no inlet tubing or sample cell |
| Brand | LINGXI Optoelectronics |
|---|---|
| Origin | Zhejiang, China |
| Model | LXEC-210C |
| Measurement Principle | Non-Dispersive Infrared (NDIR) Spectroscopy |
| Measured Gases | CO₂ and H₂O |
| Gas Path Configuration | Closed-Path |
| Compliance Context | Designed for long-term eddy covariance flux measurements per AmeriFlux/ICOS protocols |
| Data Integrity Features | Automated zero calibration, temperature-stabilized optical bench, high-frequency sampling (up to 20 Hz) |
| Environmental Robustness | IP65-rated enclosure, -25 °C to +50 °C operating range, condensation-resistant sample line heating |
| Brand | Nikira |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | LI-G3003 Portable Cavity-Enhanced Methane and Carbon Dioxide Analyzer (PMCA) |
| Price | Upon Request |
| Measurement Principle | Cavity-Enhanced Absorption Spectroscopy (CEAS) |
| CH₄ Accuracy | <10 ppb (1σ, 1 s) |
| CO₂ Accuracy | <10 ppm (1σ, 1 s) |
| H₂O Accuracy | <200 ppm (1σ, 1 s) |
| CH₄ Range | 0–10,000 ppm |
| CO₂ Range | 0–20,000 ppm |
| H₂O Range | 0–30,000 ppm |
| Data Output Rate | 3 Hz |
| Response Time | τ = 1/e at 3 Hz |
| Sample Flow Rate | 3 SLPM |
| Operating Temperature | 0–50 °C |
| Operating Humidity | 0–95% RH (non-condensing) |
| Sample Interface | Quick-Disconnect Coupler (QDC) |
| Connectivity | Integrated Wi-Fi, Ethernet (RJ-45), 2× USB 3.0, HDMI |
| Dimensions | 22.9 × 15.2 × 8.9 cm (9″ × 6″ × 3.5″) |
| Weight | 2.3 kg |
| Power Consumption | 15 W |
| Input Power | 16–24 VDC, 5 A |
| Onboard Storage | 30 GB SSD |
| Calibration Interval | Annual |
| Inlet Filter | Replaceable particulate/moisture filter |
| Warranty | 12 months |
| Brand | Nikira |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Import Status | Imported |
| Model | LI-G3004 Portable Methane and Ethane Analyzer (MEPA) |
| Pricing | Upon Request |
| Measurement Principle | Cavity-Enhanced Absorption Spectroscopy (CEAS) in Mid-Infrared |
| CH₄ Precision | < 2 ppb/s |
| C₂H₆ Precision | < 500 ppt/s |
| CH₄ Sensitivity | < 6 ppb/s |
| C₂H₆ Sensitivity | < 1.5 ppb/s |
| CH₄ Range | 1–100 ppm (highly linear) |
| C₂H₆ Range | 0.001–3 ppm (highly linear) |
| extended mode | CH₄ 1 ppm–1%, C₂H₆ 500 ppt–500 ppm (nonlinear correction applied) |
| Data Output Rate | 2 Hz |
| Response Time | 1 Hz (1/e) |
| Sample Flow Rate | Not specified |
| Operating Temperature | 0–45 °C |
| Operating Humidity | 0–98 % RH (non-condensing) |
| Inlet Fitting | ¼" Swagelok |
| Data Interfaces | RS-232 serial, built-in Wi-Fi, Ethernet (RJ-45), USB-A, HDMI |
| Dimensions | 22" × 9" × 5.5" (56 cm × 23 cm × 14 cm) |
| Weight | 4 kg |
| Power Consumption | < 30 W |
| Input Power | 14–36 VDC, 2.5 A |
| Internal Storage | 30 GB |
| Calibration Interval | Annual |
| Maintenance | Low-frequency filter replacement only |
| Warranty | Standard manufacturer warranty |
| Brand | ONUEE |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | UE2030 |
| Pricing | Available Upon Request |
| Measurement Principle | Tunable Diode Laser Absorption Spectroscopy (TDLAS) |
| Application Sector | Environmental Monitoring |
| Detection Gases | CH₄ (0–100 ppm), CO₂ (0–2000 ppm), CO, N₂O, H₂O |
| Accuracy | CH₄ ±0.3 ppm |
| Response Time | <1 s |
| Zero Noise | CH₄ 0.15 ppm |
| Precision at 80% Full Scale | CH₄ 0.3 ppm |
| Measurement Uncertainty | ±3% of reading |
| LOD | CH₄ 10 ppb |
| Output Interface | RS485 |
| Power Supply | DC 12 V |
| Operating Temperature | −30 °C to +60 °C |
| Relative Humidity | <95% RH (at +25 °C) |
| Ambient Pressure Range | 80–116 kPa |
| Dimensions | 25 cm × 53 cm × 54 cm |
| Net Weight | 5 kg |
| Enclosure | 2U Rack-Mountable Chassis |
| Internal Sampling | Integrated diaphragm pump with particulate filter and moisture trap |
| Brand | ONUEE |
|---|---|
| Origin | Guangdong, China |
| Manufacturer Type | Authorized Distributor |
| Country of Origin | China |
| Model | UKL100 |
| Pricing | Available Upon Request |
| Measurement Principle | Tunable Diode Laser Absorption Spectroscopy (TDLAS) |
| Detection Gases | CO₂, CH₄, H₂O |
| Measurement Range | CO₂: 0–2000 ppm |
| CH₄ | 0–50 ppm |
| H₂O | 0–5% |
| Measurement Frequency | 1–100 Hz |
| Accuracy | CO₂: 0.40 ppm @ 100 Hz, 0.13 ppm @ 10 Hz |
| CH₄ | 7 ppb @ 100 Hz, 5 ppb @ 10 Hz |
| H₂O | 8.17 ppm @ 100 Hz, 3.25 ppm @ 10 Hz |
| Output Interface | Ethernet (JSON protocol supported) |
| Calibration | Factory-calibrated with real-time background reference station correction |
| Dimensions (H₂O) | Ø70 × 282 mm |
| (CO₂) | Ø70 × 220 mm |
| (CH₄) | Ø135 × 600 mm |
| Weight (excl. main controller) | H₂O: 1 kg |
| CO₂ | 1 kg |
| CH₄ | 4 kg |
| Power Supply | 12–36 VDC, <2 A |
| Operating Temperature | −20 to +60 °C |
| Relative Humidity | 0–85% RH (non-condensing) |
| Atmospheric Pressure | 70–106 kPa |
| Wind Speed Limit | ≤15 m/s |
| Brand | Picarro |
|---|---|
| Origin | USA |
| Model | G2203 |
| Detection Principle | Cavity Ring-Down Spectroscopy (CRDS) |
| Target Gases | Methane (CH₄) and Acetylene (C₂H₂) |
| Measurement Sensitivity | Sub-ppb |
| Response Time | <2 seconds |
| CH₄ Precision (2-s) | 3 ppb |
| C₂H₂ Precision (2-s) | <0.6 ppb |
| CH₄ Drift (8-h, STP) | <4 ppb |
| C₂H₂ Drift (8-h, STP) | <1.5 ppb |
| Environmental Stability | Engineered for minimal thermal drift across −10 °C to +45 °C operating range |
| Brand | Pri-eco |
|---|---|
| Model | AirPlus |
| Detection Principle | Mid-Infrared Laser Absorption Spectroscopy (MIRLAS) |
| Measured Gases | CO₂, N₂O, H₂O |
| CO₂ Range | 0–3500 ppm |
| N₂O Range | 0–500 ppb |
| H₂O Range | 0–3% |
| Precision (1s) | 0.25 ppm CO₂, 0.25 ppb N₂O, 50 ppm H₂O |
| Precision (5s) | 0.12 ppm CO₂, 0.12 ppb N₂O, 40 ppm H₂O |
| Precision (5 min) | 0.012 ppm CO₂, 0.012 ppb N₂O, 10 ppm H₂O |
| Sample Flow Rate | ~180 mL/min (optional 1000 mL/min pump) |
| Operating Temperature | −10 to +45 °C |
| Relative Humidity Limit | <99% RH, non-condensing |
| Power Consumption | 15 W (steady-state) |
| Dimensions | 29 cm × 20 cm × 9.5 cm |
| Weight | 2.75 kg |
| Response Rate | 1 or 2 Hz |
| Data Interfaces | Wi-Fi, USB, RS-232 |
| Optional Outputs | Analog (4–20 mA), GPS module |
| Battery Life | 6 hours (internal Li-ion) |