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The Picarro G2301 gas concentration analyzer provides simultaneous, precise measurement of carbon dioxide (CO₂), methane (CH₄) at parts-per-billion (ppb) and water (H₂O) vapor at parts-per-million (ppm) sensitivity with negligible drift for atmospheric science, air quality, and emissions quantification. It meets the World Meteorological Organization (WMO) and Integrated Carbon Observation System (ICOS) performance requirements for CO₂ and CH₄ atmospheric monitoring.

• Simultaneous and continuous measurement of three atmospheric trace gases
• Parts-per-billion sensitivity, precision, and accuracy with exceptionally low drift
• Compliant with WMO and ICOS international ambient atmospheric monitoring requirements
• Water correction automatically reports dry gas mole fractions

Precision at 5 seconds and 5 minutes is <70 and <25 ppb for CO₂ and <0.5 and <0.22 ppb for CH₄. Maximum drift at standard temperature and pressure (STP) over 24 hours is <120 ppb for CO₂ and <1 ppb for CH₄. Water correction software automatically reports dry gas mole fractions to help reduce research complexity and consumable costs.

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The Picarro SI2104 gas concentration analyzer delivers precise, real-time monitoring of hydrogen sulfide (H₂S) at a parts-per-trillion (ppt) lower limit of detection (LOD). The SI2104 analyzer is a breakthrough field-deployable analyzer that supports multiple applications. It can be used to monitor ambient air quality, stack emissions, and map emission plumes of hydrogen sulfide. It can be used as a proxy for plumes of toxic volatile organic compounds such as benzene, xylene, and toluene, and acidic gases from chemical and industrial facilities. It can be installed as a stationary monitor along a facility's fenceline, or when used in conjunction with a mobile weather station, a GPS system, and an inverter, it can also be configured for mobile leak detection and surveys.

• Real-time H₂S measurements for fenceline monitoring and mobile surveys 
• Best-in-class sensitivity for the most demanding regulatory requirements 
• Excellent stability and continuous operation minimize downtime and data gaps 
• Easy operation and no consumables or pre-concentration reduce costs 
• Small footprint and quick installation simplify new deployments

H₂S precision at 5 minutes is 0.3 ppb (1-sigma), with an LDL of 0.9 ppb (3-sigma). Maximum drift over 24 hours is ± 3 ppb when measured at 25 °C and 760 Torr.

Water correction software automatically reports dry gas mole fractions to help reduce research complexity and consumable costs.

The Picarro SI2104 analyzer can operate and deliver accurate measurements for months without user interaction, and concentration trending data is continuously archived to the analyzer’s internal hard drive. The analyzer can be configured to automatically export measurement data via Ethernet, RS-232 interface, Analog 4-20mA or Modbus outputs. 

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The Picarro SI2205 gas concentration analyzer delivers fast, precise, real-time measurements of hydrogen fluoride (HF) at parts-per-trillion (ppt) sensitivity with negligible drift for atmospheric science and air quality applications. It incorporates coated components in the critical gas pathway. This reduces the propensity of HF molecules to adhere to pathway surfaces, which improves measurement response time. The SI2205 requires virtually no consumables, thereby offering significant ease-of-use and lower cost of ownership benefits. The analyzer is rugged and easily transportable.

• Fast, continuous, real-time measurements without interference 
• Precise temperature and pressure control ensures accuracy with negligible drift
• Small footprint, field or lab deployable, long-term stability for infrequent calibration 
• Water correction automatically reports dry gas mole fractions

Precision at 5 minutes is <10 ppt. Maximum drift over 24 hours is ±.15 ppb when measured at 25 °C and 760 Torr.

Water correction software automatically reports dry gas mole fractions to help reduce research complexity and consumable costs.

The SI2205 analyzer can operate and deliver accurate measurements for months without user interaction, and concentration trending data is continuously archived to the analyzer’s internal hard drive. The analyzer can be configured to automatically export measurement data via Ethernet, RS-232 interface, Analog 4-20mA or Modbus outputs.

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The Picarro SI2108 gas concentration analyzer delivers precise, real-time monitoring of hydrogen chloride (HCl) at a parts-per-trillion (ppt) sensitivity for atmospheric science, indoor and outdoor air quality, and hazard assessment applications. It incorporates coated components in the critical gas pathway. This reduces the propensity of HCl molecules to adhere to pathway surfaces, which improves measurement response time.  It requires virtually no consumables, thereby offering significant ease-of-use and lower cost of ownership benefits. The analyzer is rugged and easily transportable.

• Superb sensitivity, precision, and accuracy with virtually no drift
• Fast, continuous, real-time measurements without interference
• Large dynamic range with high linearity
• Installed and operational in minutes
• Rugged and insensitive to changes in ambient temperature

Water correction software automatically reports dry gas mole fractions to help reduce research complexity and consumable costs.

The Picarro SI2108 analyzer can operate and deliver accurate measurements for months without user interaction, and concentration trending data is continuously archived to the analyzer’s internal hard drive. The analyzer can be configured to automatically export measurement data via Ethernet, RS-232 interface, Analog 4-20mA or Modbus outputs.

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