Deep Water Gas Analyzer

The Deep Water Gas Analyzer combines membrane separation technology with Los Gatos Research’s cavity enhanced laser absorption spectroscopy technology to provide in situ measurements of methane and carbon dioxide at depths to 2500 meters. Designed for applications such as ocean acidification, carbon sequestration, methane hydrate and hydrothermal vent studies, these novel analyzers provide real-time measurements of dissolved gases in oceans and lakes. 

Performance Specifications

Gases Measured (one configuration per instrument):

Configuration 1: Methane concentration

Configuration 2: Carbon dioxide concentration

Configuration 3: δ¹³C in methane (δ¹³CH₄)

Precision (1σ):

Configuration 1: [CH₄]: 1 ppbv

Configuration 2: [CO₂]: 1 ppmv

Configuration 3: δ¹³CH₄: 1‰

[CH₄]: 1 ppmv

Measurement Range (meets all specs):

Configuration 1: [CH₄]: 1– 500 ppmv

Configuration 2: [CO₂]: 300 – 25000 ppmv

Configuration 3: [CH₄]: 400 – 20000 ppmv

Operational Range

(external calibration may be required):

Configuration 1: [CH₄]: 0.5 – 1000 ppmv

Configuration 2: [CO₂]: 150 – 50000 ppmv

Configuration 3: [CH₄]: 200 – 40000 ppmv

Measurement Rate:

5 minutes

Maximum Depth:

2500 meters

Sampling conditions:

Sample Temperature: 0 – 50 °C

Operating Temperature: 5 – 45 °C

Outputs:

Digital (RS232), Ethernet

Power Requirements:

115/230 VAC, 50/60 Hz

80 watts

Dimensions:

20 cm diameter

122 cm length

Weight:

100 pounds (45 kg)