CH4 CO2 H2O Trace Gas Analyzer

• Measurement Technique: OF-CEAS (Optical Feedback-Cavity Enhanced Absorption Spectroscopy)
• Measurement Rate: 1 sample per second (1 Hz)
• Optical Cavity Volume: 6.41 cm³
• Flow Rate: 250 sccm (nominally)
• Total Weight: 10.5 kg (including batteries)
• Case Dimensions: 51 cm L x 33 cm W x 18 cm H
• Operating Temperature Range: –25 °C to 45 °C (without solar load, under normal operating conditions)
• Operating Humidity Range: 0 to 85% RH (non-condensing, without solar load, under normal operating conditions)
• Sample Line Humidity Range: 0 to 99.9% non-condensing
• Operating Pressure Range: 70 to 110 kPa
• Connectivity: Ethernet, Wi-Fi (not available in some countries)
• Wi-Fi Compatibility: 2.4 GHz, 802.11 a/b/g/n/ac
• Power Consumption:
  • Steady State Operation: 22 W at 25 °C
  • Warmup (10.5 to 33 VDC power supply, pins 3 and 4): Up to 90 W
  • Warmup (Universal power supply or 24 VDC power supply, pins 1 and 5): Up to 140 W with batteries charging
• Power Supply: Universal Power Adapter (Input: 100 to 240 VAC, 50-60 Hz; Output: 24 VDC)
• Battery Life: 8 hours typical with 2 batteries

CH₄/CO₂/H₂O Measurements

• Response Time (T₁₀-T₉₀): CH₄ ≤ 2 seconds, 0 to 2 ppm

CH₄ Measurements

• Measurement Range: 0 to 100 ppm
• Precision (1σ):
  • 0.60 ppb at 2 ppm with 1 second averaging
  • 0.25 ppb at 2 ppm with 5 second averaging
• Maximum Drift: < 1 ppb per 24-hour period

CO₂ Measurements

• Measurement Range: 1 to 10,000 ppm
• Precision (1σ):
  • 3.5 ppm at 400 ppm with 1 second averaging
  • 1.5 ppm at 400 ppm with 5 second averaging

H₂O Measurements

• Measurement Range: 0 to 60,000 ppm
• Precision (1σ):
  • 45 ppm at 10,000 ppm with 1 second averaging
  • 20 ppm at 10,000 ppm with 5 second averaging