Specifications

General

  • 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

    • 70 sccm nominally with kit installed

  • Total Weight: 18.14 kg (including batteries)

  • Case Dimensions: 56 × 48.25 × 18 cm (D × W × H)

  • Rack Space: Four rack units (4U)

  • Operating Temperature Range: -25 °C to 45 °C

  • Operating Humidity Range: 0 to 85% RH (non-condensing, without solar load)

  • Sample Line Humidity Range: 0 to 99.9% (non-condensing)

  • Operating Pressure Range: 70 to 110 kPa

  • Connectivity: Ethernet TCP/IP; RJ45 connector

  • Power Consumption:

    • Steady State Operation: 22 Watts at 25 °C without batteries charging

    • Warmup: Up to 65 W without batteries charging; up to 100 W with batteries charging

    • Off: Up to 2.3 W when powered from pins 3 and 4 without batteries charging; up to 0.2 W when powered from pins 1 and 5 without batteries charging

  • Power Requirements: 100 to 240 VAC, 50 or 60 Hz

  • Battery Life: 8 hours typical with 2 batteries

  • Data Storage: Up to 5,356,800 records; about 62 days of continuous data collection

  • Pollution Degree: 2

  • Over-voltage Category: II

  • Class 1 Laser Product

CH4 Measurements

  • Response Time (T10 - T90) from 0 to 2 ppm:

    • ≤2 seconds in standard configuration

    • ≤3 seconds in high altitude configuration

  • 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

  • Range: 0 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

  • 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

External pump

  • Dimensions: 27 × 18 × 17 cm (W × H × D)

  • Weight: 4.1 kg

Specifications subject to change without notice.

Figure C‑1. LI-8810 dimensions. Clearance is required for the power cable, network cable, tubing, and 2 to 3 cm around the case vents. The gas analyzer occupies four rack units (4U).
Figure C‑2. External pump dimensions. Clearance is required for the power cable, tubing, and vents.